[Event "HokkaidoChessCh2023"]
[Site "?"]
[Date "2023.03.25"]
[Round "1.1"]
[White "Sugimoto, Koichi"]
[Black "Matsumoto, Kenshin"]
[Result "1-0"]
[ECO "D66"]
[WhiteElo "1959"]
[BlackElo "1413"]
[Annotator "Fritz 11 SE (30s)"]
[PlyCount "37"]
[SourceDate "2023.03.26"]

{D66: Queen's Gambit Declined: Classical: Main Line (7 Rc1 c6 8 Bd3)} 1. d4 d5
2. c4 e6 3. Nf3 Nf6 4. Bg5 Be7 5. Nc3 Nbd7 6. e3 O-O 7. Rc1 c6 8. Bd3 c5 $146 (
8... Ne8 9. Bf4 (9. Bxe7 Qxe7 10. O-O f5 11. Qb3 Kh8 12. Ne5 Nef6 13. Nxd7 Qxd7
14. Qa3 Qf7 15. f3 Rg8 16. e4 f4 17. Qd6 g5 18. Rfe1 Nh5 19. exd5 g4 20. Qe5+
Nf6 21. Ne4 gxf3 22. Qxf6+ Qxf6 23. Nxf6 Rxg2+ {Antonsen,M (2380)-Flindt,T 
(2175) Esbjerg 2006 1-0}) 9... dxc4 (9... f5 10. h3 Nd6 11. Qb3 Kh8 12. g4 Qe8
13. cxd5 exd5 14. g5 Ne4 15. h4 Bd6 16. Ne2 Bxf4 17. Nxf4 Ng3 18. Rg1 Nh5 19.
Kd2 Nxf4 20. exf4 Qd8 21. Qb4 Nb6 22. Rce1 Nc4+ 23. Bxc4 dxc4 24. Re7 {Bareev,
E (2590)-Dovzik,J (2410) Dortmund 1990 1-0 (42)}) 10. Bxc4 Bd6 11. Bg3 Qc7 12.
Bd3 Nef6 13. Nd2 Bxg3 14. hxg3 e5 15. d5 h6 16. Bb1 Rd8 17. O-O Nb6 18. dxc6
Nc4 19. Nb5 Qxc6 20. Nxa7 Rxa7 21. Rxc4 Qd6 22. Rc1 Be6 23. Nc4 {Garcia
Gonzales,G (2535)-Radulov,I (2490) Buenos Aires 1978 0-1 (56)}) (8... h6 9.
Bxf6 Nxf6 10. c5 b6 11. Ne5 bxc5 12. Nxc6 Qd6 13. Nxe7+ Qxe7 14. dxc5 Qxc5 15.
O-O Qb4 16. Qe2 Rb8 17. b3 e5 18. e4 d4 19. Na4 Bd7 20. Nb2 Bb5 21. Nc4 Qe7 22.
f4 Bxc4 23. Rxc4 {Peist,J (2350)-Federau,J (2300) Germany 1988 0-1 (63)}) 9.
cxd5 exd5 10. O-O a6 {Consolidates b5} 11. Ne5 cxd4 (11... c4 $5 {deserves
consideration} 12. Be2 Nb6 $14) 12. exd4 $16 Nxe5 (12... Re8 13. Re1 $16) 13.
dxe5 $18 Nd7 $2 (13... Ng4 $142 14. Bf4 d4 $18) 14. Bxe7 Qxe7 15. Nxd5 Qxe5 16.
Re1 Qxb2 (16... Qg5 {no good, but what else?} 17. f4 Qh6 (17... Qxd5 $4 {
the knight is invulnerable} 18. Bxh7+ Kxh7 19. Qxd5 $18) 18. Ne7+ Kh8 19. Nxc8
Raxc8 20. Rxc8 Qb6+ 21. Kh1 Rxc8 $18) 17. Bxh7+ $1 {Mate attack} Kh8 (17...
Kxh7 18. Qh5+ {Mate attack}) 18. Qh5 (18. Rb1 $142 {and White has prevailed}
Qe5 19. Rxe5 Nxe5 $18) 18... Nf6 (18... Qd2 {there is nothing else anyway} 19.
f4 Nf6 20. Nxf6 Qd4+ 21. Kh1 Qxf4 22. Be4+ Qh6 $18) 19. Nxf6 (19. Nxf6 Qd2 20.
Bd3+ Qh6 21. Rc5 $18) 1-0

[Event "HokkaidoChessCh2023"]
[Site "?"]
[Date "2023.03.25"]
[Round "1.2"]
[White "Nakamura, Mitsuru"]
[Black "Akai, Kiyotaka"]
[Result "0-1"]
[ECO "C80"]
[WhiteElo "1413"]
[BlackElo "1705"]
[Annotator "Fritz 11 SE (30s)"]
[PlyCount "82"]
[SourceDate "2023.03.26"]

{C80: Open Ruy Lopez: Sidelines and 9 Nbd2} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4.
Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. Nxe5 Nxe5 9. dxe5 Be6 10. Nd2 (10. c3
Bc5 11. Nd2 O-O 12. Nf3 f5 13. Nd4 Bxd4 14. Qxd4 c5 15. Qd1 f4 16. f3 Ng5 17.
a4 c4 18. Bc2 Bf5 19. b3 Bxc2 20. Qxc2 d4 21. axb5 d3 22. Qa2 axb5 23. Qxa8
Qxa8 24. Rxa8 Rxa8 {Ehlvest,J (2600)-Mamedyarov,S (2542) Kocaeli 2002 0-1 (33)}
) 10... Nxd2 11. Bxd2 c5 $146 (11... Bc5 12. Qf3 O-O 13. Be3 Bxe3 14. Qxe3 d4
15. Qe4 Bxb3 16. axb3 Qd7 17. b4 Rfd8 18. Ra3 Qe7 19. Rh3 h6 20. Rg3 Qxb4 21.
Qf4 Qe7 22. Qxh6 Qxe5 23. Qh4 Rd6 24. Rg5 Qf6 25. Qg3 Re8 26. Rg4 {Mrvova,A 
(2201)-Kantorik,M (2364) Tatranske Zruby 2009 0-1 (53)}) (11... Bc5 12. a3 $11)
12. c3 $14 Be7 {[%cal Yd5d4] Black intends d4} 13. Qf3 O-O 14. Rad1 d4 {
Black gains space} (14... Ra7 15. Qg3 Bh4 16. Qf4 $11) 15. Bxe6 (15. Be3 $5 $16
) 15... fxe6 $11 16. Qe4 (16. Qg4 Qd5 17. Bh6 Rf7 18. cxd4 cxd4 (18... Qxa2
$143 19. d5 Bf8 20. dxe6 $16) 19. Rxd4 Qxe5 $11) 16... d3 {Black has a new
passed pawn: d3} 17. Qc6 Qd5 18. Qxd5 exd5 {White has a new passed pawn: e5.
Black has new doubled pawns: d3+d5} 19. Be3 c4 {Black has a new protected
passed pawn: d3} 20. Bd4 {A sound move} (20. f4 a5 $11) 20... Kf7 $15 21. f4 {
White has a new protected passed pawn: e5} Ke6 22. g4 g6 23. Kg2 Rf7 24. Rf3
Raf8 25. Be3 b4 26. Kf2 bxc3 27. bxc3 Rb8 28. Kg3 h5 29. gxh5 gxh5 30. h4 $4 {
causes further problems for White.} (30. Rff1 $142 $17) 30... Kf5 31. Kh3 Rg7
32. Rg3 Rxg3+ 33. Kxg3 Rg8+ 34. Kh3 Rg4 35. Rb1 (35. Bd2 $19 {is one last hope}
) 35... Rxh4+ 36. Kg3 Rg4+ {[%cal Yh5h4] Black prepares h4} 37. Kf3 h4 38. Rb7
(38. Rh1 Rg3+ 39. Kf2 Kg4 $19) 38... Rg3+ 39. Kf2 Ke4 40. Bd2 (40. Ba7 Rg7 41.
Rb1 $19) 40... Bc5+ 41. Kf1 (41. Be3 {a fruitless try to alter the course of
the game} Bxe3+ 42. Ke1 Rg1#) 41... Rg1# 0-1

[Event "HokkaidoChessCh2023"]
[Site "?"]
[Date "2023.03.25"]
[Round "1.3"]
[White "Kanda, Daigo"]
[Black "KiharaK, Kotaro"]
[Result "1-0"]
[ECO "A45"]
[WhiteElo "1705"]
[BlackElo "1351"]
[Annotator "Fritz 11 SE (30s)"]
[PlyCount "51"]
[SourceDate "2023.03.26"]

{A45: Trompowsky Attack} 1. d4 Nf6 2. Bf4 g6 3. e3 Bg7 4. h4 $146 (4. Be2 O-O
5. h3 c5 6. c3 Qb6 7. Qb3 Qxb3 8. axb3 cxd4 9. exd4 d6 10. Nd2 Nc6 11. Ngf3 e5
12. dxe5 Nd5 13. Bg3 dxe5 14. O-O Bf5 15. Nc4 e4 16. Nfe5 Nxe5 17. Nxe5 Be6 18.
Nc4 f5 {Jaeger,H (2210)-Wendel,S (2220) Hessen 1998 0-1 (57)}) (4. h3 O-O (4...
d6 5. c3 O-O 6. Bh2 Nbd7 7. Nf3 e6 8. Bd3 Qe7 9. O-O e5 10. Be2 e4 11. Nfd2 h5
12. c4 Re8 13. Nc3 Nf8 14. Rc1 c6 15. b4 Bf5 16. Nb3 Qd7 17. d5 Rad8 18. dxc6
bxc6 19. c5 {Rusev,K (2541)-Berg,E (2558) Vaxjo 2015 1-0 (44)}) (4... b6 5. Nf3
Bb7 6. Bd3 O-O 7. O-O c5 8. Nbd2 d5 9. c3 Nc6 10. Qe2 Nd7 11. Ba6 Qc8 12. Bxb7
Qxb7 13. Rfd1 Rfe8 14. Qb5 a6 15. Qb3 e6 16. a4 Rad8 17. Bg5 f6 18. Bh4 Kh8 19.
e4 {Nureev,G (2340)-Aranovitch,E (2375) ICC INT 2009 1-0 (51)}) 5. c3 d5 6. Nd2
Nbd7 7. Ngf3 b6 8. a4 a5 9. Be2 Bb7 10. O-O Ne4 11. Rc1 Rc8 12. b4 Ra8 13. b5
Re8 14. c4 e5 15. dxe5 Nxe5 16. cxd5 Nxf3+ 17. Bxf3 Nc3 18. Rxc3 Bxc3 {Kamsky,
G (2721)-Mamedyarov,S (2757) Beijing 2013 0-1 (67)}) (4. Nd2 d6 5. h3 O-O 6.
Bh2 c5 7. c3 Nc6 8. Ngf3 cxd4 9. exd4 e5 10. dxe5 dxe5 11. Nc4 Nd5 12. Be2 e4
13. Nfd2 e3 14. Nxe3 Nxe3 15. fxe3 Qh4+ 16. Kf1 Qe7 17. Nf3 Qxe3 18. Qd3 Bh6 {
Pirs,M (2330)-Heiling,T (2215) Hessen 2000 0-1 (43)}) 4... d5 5. Be2 h5 (5...
c5 6. Nc3 $11) 6. Nc3 c6 {Prevents intrusion on b5} 7. Nf3 Bf5 8. Ne5 Nbd7 9.
f3 {Controls e4} Bh6 10. Bxh6 Rxh6 11. Qd2 Rh7 12. O-O-O Nxe5 (12... Qc7 13.
Nxd7 Qxd7 14. b3 $11) 13. dxe5 $14 Nd7 14. e4 dxe4 15. fxe4 (15. g4 $142 hxg4
16. fxg4 $14) 15... Bg4 $4 {a transit from better to worse} (15... Be6 $142 $11
{and Black can hope to survive}) 16. Bxg4 $18 hxg4 17. e6 $1 {surprise!} Nc5 $4
{Black has lost his nerve... understandable when you consider his position} (
17... fxe6 18. Qg5 {Combination}) 18. exf7+ Rxf7 19. Qg5 Qc7 20. Qxc5 Rd8 21.
Rxd8+ Kxd8 22. Rd1+ Ke8 23. e5 b6 (23... Rf5 {doesn't change anything anymore}
24. Qxa7 Kf7 25. Kb1 $18) 24. Qd4 (24. Nb5 $142 {makes it even easier for White
} Qc8 25. Qc4 $18) 24... c5 (24... Rf5 {is the last straw} 25. Qxg4 Kf7 26. e6+
Kg7 $18) 25. Qd5 (25. Qxg4 $142 {nails it down} Qc6 26. e6 Rf6 $18) 25... Qc8
26. Ne4 (26. Ne4 Kf8 27. h5 $18) 1-0

[Event "HokkaidoChessCh2023"]
[Site "?"]
[Date "2023.03.25"]
[Round "1.4"]
[White "Al Jabarat, Thamer"]
[Black "Yoshii, Yukihiko"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "1309"]
[BlackElo "1699"]
[Annotator "Fritz 11 SE (30s)"]
[PlyCount "92"]
[SourceDate "2023.03.26"]

{D00: 1 d4 d5: Unusual lines} 1. d4 d5 2. e3 Nf6 3. Nc3 $146 (3. c3 Nbd7 (3...
g6 4. Bd3 (4. Be2 Bg7 5. h4 Nc6 6. Nd2 a6 7. b3 h5 8. Nh3 Bg4 9. Ng5 Bxe2 10.
Qxe2 Qd7 11. O-O Qg4 12. Qxg4 hxg4 13. g3 e5 14. Ba3 Bh6 15. f4 gxf3 16. Ndxf3
e4 17. Nh2 Bxg5 18. hxg5 Rxh2 {Depasquale,C (2300)-Garbett,P (2230) Sydney
1989 1-0}) 4... Bg7 5. h4 (5. Nd2 Nbd7 6. f4 c5 7. Ngf3 O-O 8. O-O b6 9. Qe1 a5
10. Ne5 Ba6 11. Bxa6 Rxa6 12. Qh4 b5 13. Rf3 Qc7 14. Rh3 b4 15. Nf1 Rb8 16. Bd2
Nf8 17. c4 dxc4 18. Rc1 c3 19. bxc3 b3 {Chelushkina,I (2265)-Todorovic,G (2488)
Belgrade 2013 1-0}) 5... Nbd7 6. Nf3 c5 7. Nbd2 Qc7 8. Qe2 O-O 9. b3 e5 10.
Nxe5 Nxe5 11. dxe5 Qxe5 12. Bb2 Bg4 13. f3 Rfe8 14. O-O-O Qxe3 15. Qxe3 Rxe3
16. Nf1 Rxd3 17. Rxd3 Bh6+ 18. Rd2 {Onkoud,A (2361)-Libiszewski,F (2413)
Chartres 2005 0-1 (56)}) 4. f4 Ne4 5. Nf3 e6 6. Bd3 Ndf6 7. O-O Be7 8. Na3 O-O
9. Nc2 c5 10. Nce1 c4 11. Bc2 b5 12. Ng5 Nxg5 13. fxg5 Ne4 14. Bxe4 dxe4 15. h4
Qc7 16. Qg4 Qc6 17. Nc2 a5 {Bird,H-Blackburne,J Belfast 1892 1/2-1/2 (42)}) (3.
Ne2 Bf5 4. Ng3 Bg6 5. h4 h6 6. Bd3 Bxd3 7. Qxd3 Nbd7 8. Nc3 c6 9. e4 e5 10.
exd5 exd4 11. dxc6 bxc6 12. Qxd4 Bc5 13. Qc4 O-O 14. Kf1 Rb8 15. a3 Re8 16. Bf4
Bxf2 17. Bxb8 Qxb8 {Nemety,L (2235)-Lamoureux,C (2430) Paris 1994 0-1}) 3... e6
4. Bd3 Be7 5. Nf3 h6 {Controls g5} (5... O-O 6. O-O $11) 6. Bd2 a6 {
Consolidates b5} 7. a3 {Covers b4} (7. e4 dxe4 8. Nxe4 Nc6 $14) 7... Nc6 8. h3
{Secures g4} Bd7 (8... O-O 9. Qe2 $11) 9. Qe2 b5 10. b4 (10. O-O O-O $16) 10...
O-O $11 11. O-O Bd6 12. e4 dxe4 13. Nxe4 Nxe4 (13... Re8 14. c4 bxc4 15. Bxc4
Nxe4 16. Qxe4 $14) 14. Bxe4 Rb8 15. Be3 {Black has a cramped position} (15. Bc3
Ne7 $14) 15... Ne7 (15... f5 16. Bd3 $11) 16. c3 c6 {Covers d5} (16... Bc6 17.
Bxc6 Nxc6 18. c4 $11) 17. Bc2 $16 Nd5 18. Bd2 Qc7 19. Rfe1 Rfe8 20. Qd3 f5 21.
Bb3 Nf6 $2 (21... a5 22. bxa5 Qxa5 23. a4 $16) 22. Nh4 $4 {White is ruining
his position} (22. Qxf5 $142 $1 {and White wins} Rf8 23. Bxe6+ Bxe6 24. Rxe6
$18) 22... Kh7 $16 23. f3 $4 {forfeits the advantage} (23. Re2 $142 $16) 23...
Bg3 {Black threatens to win material: Bg3xh4. Black forks: e1+h4} (23... Bh2+
$142 24. Kh1 Bg3 $19) 24. Bxe6 $4 (24. f4 $142 {was possible} Bxh4 25. g3 $15)
24... Bxh4 $19 (24... Rxe6 $6 {is clearly worse} 25. Qxf5+ Kg8 26. Rxe6 Bxh4
27. Re7 $11) (24... Bxe6 $6 25. Rxe6 Bxh4 26. Qxf5+ g6 27. Qe5 $19) 25. Bxf5+ (
25. Bxd7 {the last chance for counterplay} Qxd7 26. Rec1 $19) 25... Bxf5 26.
Qxf5+ g6 27. Qd3 Bxe1 28. Bxe1 Re6 29. Bh4 (29. c4 {doesn't improve anything}
Rbe8 30. Bf2 Nh5 31. cxb5 cxb5 $19) 29... Nd5 30. Qc2 (30. Bf2 {cannot change
what is in store for White} Rbe8 31. Qd1 Nxc3 $19) 30... Rbe8 31. Rf1 (31. Bf2
{doesn't get the bull off the ice} Re2 32. Qb1 Rd2 $19) 31... Re2 32. Qc1 (32.
Qb1 {a last effort to resist the inevitable} R8e3 33. Bf2 $19) 32... Nf4 33. g3
Nxh3+ 34. Kh1 Nf2+ 35. Kg1 Nd3 36. Qd1 (36. Rd1 {is no salvation} Nxc1 37. a4
g5 38. Kh1 gxh4 39. Rg1 hxg3 40. Rxc1 Qf4 41. Ra1 Qxf3+ 42. Kg1 Qg2#) 36...
R8e3 37. f4 (37. Qxd3 {doesn't get the cat off the tree} Rxd3 38. Re1 Rxe1+ 39.
Kh2 Rd2+ 40. Kh3 h5 41. c4 Rh1#) 37... Qd7 38. f5 g5 39. Rf3 (39. c4 {cannot
undo what has already been done} Qxd4 40. Rf2 gxh4 41. Rxe2 Rxe2+ 42. Kh1 Qe4+
43. Kg1 Qg2#) 39... Re1+ 40. Qxe1 (40. Kh2 {hardly improves anything} Rxd1 41.
Rxe3 Rd2+ 42. Kg1 Qd5 43. Re7+ Kg8 44. Re8+ Kf7 45. Re7+ Kxe7 46. Bxg5+ hxg5
47. f6+ Kxf6 48. c4 Qg2#) 40... Rxe1+ 41. Kg2 (41. Kh2 {does not save the day}
Qd5 42. g4 Qxf3 43. Bxe1 Nxe1 44. f6 Qg2#) 41... Qd5 42. g4 (42. Bxg5 {does
not win a prize} Re2+ 43. Kh3 Qxf3 44. Bd8 h5 45. Kh4 Qg4#) 42... gxh4 43. f6 (
43. c4 {does not help much} Re2+ 44. Kh3 Qxf3+ 45. Kxh4 Rh2#) 43... Re2+ 44.
Kg1 (44. Kh3 {doesn't do any good} Qxf3+ 45. Kxh4 Rh2#) 44... Qxf3 45. g5 Re1+
(45... Qg2#) 46. Kh2 Qh1# (46... Qg3#) 0-1

[Event "HokkaidoChessCh2023"]
[Site "?"]
[Date "2023.03.25"]
[Round "1.5"]
[White "Kawamura, Takuto"]
[Black "Ito, Katsuhide"]
[Result "1-0"]
[ECO "D08"]
[WhiteElo "1554"]
[BlackElo "1233"]
[Annotator "Fritz 11 SE (30s)"]
[PlyCount "71"]
[SourceDate "2023.03.26"]

{D08: Albin Counter Gambit} 1. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3 Nc6 5. Nbd2 Bb4
(5... Nge7 6. Nb3 Nf5 7. a3 Be7 8. g3 a5 9. Qd3 a4 10. Nbd2 h5 11. Bh3 g6 12.
Ne4 h4 13. Bf4 hxg3 14. hxg3 Ng7 15. Bg2 Rxh1+ 16. Bxh1 Bf5 17. Nfg5 Na5 18.
Qf3 Ne6 19. Nh7 Bxe4 20. Qxe4 {Sokolov,I (2685)-Morozevich,A (2741) Wijk aan
Zee 2005 0-1 (34)}) 6. a3 (6. g3 Be6 7. Qc2 Nge7 8. Bg2 Ng6 9. O-O Qd7 10. Nb3
Bf5 11. Qd1 d3 12. e3 Ngxe5 13. Nxe5 Nxe5 14. Bd2 Be7 15. Bc3 f6 16. Bxb7 Rb8
17. Bg2 O-O 18. Bd4 c6 19. Rc1 Rb4 20. f4 Nf7 {Ulibin,M (2515)-Pettersson,A 
(2258) Norrkoeping 2012 1-0 (44)}) 6... Bxd2+ 7. Bxd2 $146 (7. Qxd2 Bg4 8. Qg5
Qxg5 9. Nxg5 Nxe5 10. h3 Bd7 11. Nf3 Nxf3+ 12. exf3 O-O-O 13. Bd3 Re8+ 14. Kd2
Ne7 15. b4 Bf5 16. g4 Bxd3 17. Kxd3 Nc6 18. Bf4 f6 19. Rae1 Ne5+ 20. Bxe5 fxe5
21. h4 Rhf8 {Labin,S (2210)-Honfi,K (2390) Budapest 1995 0-1 (46)}) (7. Kxd2 $6
Nge7 $11) 7... Nge7 8. g3 (8. Qb3 O-O $16) 8... Ng6 {Black threatens to win
material: Ng6xe5} 9. Bg2 Ncxe5 (9... O-O 10. Bg5 Qd7 11. O-O $14) 10. O-O Nxf3+
11. Bxf3 O-O {Black castles and improves king safety} 12. Rc1 c5 (12... Re8 13.
c5 $11) 13. Qc2 Re8 14. Rcd1 Rb8 15. Rfe1 Ne5 16. Bg2 g6 17. Bf4 g5 18. Bxe5
Rxe5 19. Qd2 Bf5 (19... f6 20. Bd5+ Be6 21. Bxe6+ Rxe6 22. e3 $14) 20. e3 $16 {
White threatens to win material: e3xd4} Bg4 (20... Qf6 21. Bd5 $14) 21. exd4
Rxe1+ (21... Qxd4 $5 22. Qxd4 Rxe1+ 23. Rxe1 cxd4 $16) 22. Rxe1 $18 Qf6 (22...
cxd4 $142 23. h4 $1 {here's the full point} gxh4 $18) 23. Re5 h6 24. Rxc5 Re8
25. Re5 (25. Bxb7 $4 {a poisoned pawn} Re2 26. Qxe2 Bxe2 $19) 25... Re7 (25...
Rxe5 26. dxe5 Qxe5 27. Bxb7 $18) 26. Qe3 Be6 (26... Rxe5 {hoping against hope}
27. dxe5 Qf5 28. Bxb7 Qc2 $18) 27. d5 Kf8 (27... b6 {doesn't change the
outcome of the game} 28. b4 $18) 28. dxe6 Rxe6 (28... fxe6 {is not much help}
29. Bh3 $18) 29. Rxe6 Qxe6 (29... fxe6 {is not the saving move} 30. Qc5+ Kf7
31. Qc7+ Ke8 32. Qc8+ Qd8 33. Qxe6+ Qe7 34. Qg8+ Qf8 35. Qxf8+ Kxf8 36. Bxb7
$18) 30. Qxe6 fxe6 31. Bxb7 Ke7 32. Kf1 Kd6 33. Ke2 Kc5 (33... a5 {does not
solve anything} 34. Kd3 $18) 34. Kd3 Kb6 35. Bc8 Ka5 36. Bxe6 1-0

[Event "HokkaidoChessCh2023"]
[Site "?"]
[Date "2023.03.25"]
[Round "1.6"]
[White "Furuse, Mizuki"]
[Black "Takeuchi, Hiroshi"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "922"]
[BlackElo "1418"]
[Annotator "Fritz 11 SE (30s)"]
[PlyCount "43"]
[SourceDate "2023.03.26"]

{B07: Pirc Defence: Miscellaneous Systems} 1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. h3
Bg7 5. Be3 O-O 6. Qd2 a6 (6... c6 7. a4 Qa5 8. Nf3 b5 9. Bd3 b4 10. Ne2 d5 11.
Ng3 dxe4 12. Nxe4 Nxe4 13. Bxe4 Ba6 14. Bh6 Rd8 15. Bxg7 Kxg7 16. Bd3 Bxd3 17.
Qxd3 c5 18. O-O cxd4 19. Nxd4 e5 20. Qe4 Qd5 21. Qxd5 {Pekarek,A (2475)
-Borkowski,F (2375) Odense 1991 0-1 (40)}) 7. Bh6 (7. O-O-O b5 8. f3 Nbd7 9. g4
e5 10. d5 Nc5 11. Nge2 b4 12. Nb1 a5 13. Ng3 Nfd7 14. h4 Nb6 15. h5 Qe7 16. Qh2
Bf6 17. Nd2 Re8 18. Bb5 Bd7 19. Bxd7 Ncxd7 20. g5 Bh8 21. Qe2 Reb8 {
Zakharchenko,A (2356)-Srebrnic,V (2254) Nova Gorica 2004 1-0 (44)}) 7... e5
$146 (7... b5 8. a3 Bb7 9. f3 Nbd7 10. Bxg7 Kxg7 11. g4 c5 12. h4 cxd4 13. Qxd4
Qb6 14. O-O-O Qxd4 15. Rxd4 Rac8 16. h5 Ne5 17. Be2 Rc5 18. Nh3 Rfc8 19. Nf2
Nfd7 20. f4 Nc4 21. Bxc4 Rxc4 22. h6+ {Peresada,A (2471)-Nikolov,S (2354)
Nerezine 2002 0-1 (39)}) 8. Bxg7 Kxg7 9. Nf3 exd4 10. Qxd4 {Black has a
cramped position} Nc6 {Black threatens to win material: Nc6xd4} 11. Qd2 (11.
Qe3 $5 $11 {must be considered}) 11... Re8 $17 12. Bd3 Nb4 (12... Bf5 $142 $1
$17) 13. O-O $11 Nxd3 14. cxd3 Bd7 15. Rfe1 Bc6 16. Rac1 Qd7 17. Qe3 h6 {
Prevents intrusion on g5} 18. d4 $4 {allows the opponent back into the game} (
18. Qd4 $142 $14) 18... Nxe4 $4 {Black has let it slip away} (18... Bxe4 $142
19. Nxe4 Rxe4 $17) 19. d5 $16 Bxd5 $4 {Black falls apart.} (19... Nf6 $142 20.
dxc6 Rxe3 21. cxd7 Rxe1+ 22. Nxe1 Rd8 $16) 20. Nxd5 $18 f5 (20... c5 {
otherwise it's curtains at once} 21. Nb6 Qd8 22. Nxa8 Qxa8 $18) 21. Rxc7 Qxc7
22. Nxc7 (22. Nxc7 Nf6 23. Nxe8+ Rxe8 24. Qb6 Rxe1+ 25. Nxe1 $18) 1-0

[Event "HokkaidoChessCh2023"]
[Site "?"]
[Date "2023.03.25"]
[Round "2.1"]
[White "Yoshii, Yukihiko"]
[Black "Sugimoto, Koichi"]
[Result "0-1"]
[ECO "A25"]
[WhiteElo "1699"]
[BlackElo "1959"]
[Annotator "Fritz 11 SE (30s)"]
[PlyCount "74"]
[SourceDate "2023.03.26"]

{A25: English Opening vs King's Indian with ...Nc6 but without early d3} 1. c4
e5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 Bb4 5. d3 O-O 6. e3 (6. Bd2 Re8 7. Nd5 Bxd2+ 8.
Qxd2 Nxd5 9. cxd5 Ne7 10. d4 d6 11. e3 c6 12. dxc6 bxc6 13. dxe5 dxe5 14. Qxd8
Rxd8 15. Nf3 f6 16. O-O Be6 17. Rfc1 a5 18. Bf1 Rab8 19. b3 Rb4 20. Be2 a4 {
Shurygin,S (2395)-Voloshin,L (2420) Frydek Mistek 1996 0-1 (57)}) (6. e4 a5 7.
Nge2 Nd4 8. O-O c6 9. Nxd4 exd4 10. Ne2 Bc5 11. Nf4 d6 12. b3 Bg4 13. Qc2 Nh5
14. Ne2 Be6 15. Bb2 Qb6 16. h3 g6 17. a3 Ng7 18. b4 axb4 19. axb4 Qxb4 20. Nxd4
Qb6 {Hirn,O (2218)-Osmanodja,F (2275) Nuremberg 2013 1-0 (70)}) 6... Re8 $146 (
6... d5 7. cxd5 Nxd5 8. Nge2 Bg4 9. Qc2 Qd7 10. O-O Bxc3 11. bxc3 Bxe2 12. Qxe2
Nxc3 13. Qc2 Nd5 14. Ba3 Rfd8 15. Rab1 Nb6 16. Rfd1 Rac8 17. Bxc6 bxc6 18. Rbc1
Qd5 19. Rd2 Qa5 20. Qc3 Qa6 21. Bb2 {Yaksin,O (2307)-Nyzhnyk,I (2428) Moscow
2008 1/2-1/2 (53)}) (6... d5 7. cxd5 Nxd5 8. Nge2 $15) 7. Nge2 $11 b6 (7... d5
$5 8. cxd5 Nxd5 $11) 8. a3 $14 Bf8 9. b4 Bb7 10. b5 {White threatens to win
material: b5xc6} (10. O-O $5 $11) 10... Na5 11. e4 h6 {Covers g5} 12. O-O Bc5
13. h3 {Secures g4} c6 14. a4 a6 15. Bd2 d6 16. bxc6 Nxc6 17. Nd5 Nxd5 18. cxd5
Nb4 {Black threatens to win material: Nb4xd3} (18... Nd4 $142 $11) 19. Qb3 (19.
Bc3 $142 $14 {and White can hope to live}) 19... a5 $17 20. Bxb4 (20. Nc3 Ba6
$17) 20... Bxb4 {Black has the pair of bishops} (20... axb4 21. Kh2 $17) 21.
Rac1 (21. Bf3 Bc8 22. Kg2 Qg5 $15) 21... Qd7 $17 22. d4 (22. Rfd1 Rac8 $17)
22... Ba6 23. Rc2 exd4 24. Nf4 $4 {leads to further unpleasantness} (24. Nxd4
$142 Bxf1 25. Kxf1 $17) 24... Bxf1 $19 25. Bxf1 Rxe4 26. Bb5 Re1+ 27. Kg2 Qf5
28. Bd3 Qd7 29. Bb5 Qe7 30. Bd3 (30. Qf3 {a fruitless try to alter the course
of the game} Qf6 $19) 30... Rb8 31. Bf5 g6 32. Bg4 (32. Bd3 {cannot change
destiny} Re8 $19) 32... h5 33. Bf3 Ra1 34. Re2 Qd7 (34... Qc7 $142 {and Black
can already relax} 35. Rc2 Bc3 36. Ra2 Rxa2 37. Qxa2 $19) 35. Qb2 (35. Qd3 {
there is nothing better in the position} Qc7 36. Rc2 $19) 35... Bc3 36. Qc2
Qxa4 37. Qe4 (37. Qd3 {desperation} Qa3 38. h4 $19) 37... Qd1 (37... Qd1 38.
Re1 Qxe1 (38... Bxe1 $6 39. Bxd1 Rxd1 40. Nxg6 $11) 39. Qxe1 Rxe1 $19) 0-1

[Event "HokkaidoChessCh2023"]
[Site "?"]
[Date "2023.03.25"]
[Round "2.2"]
[White "Akai, Kiyotaka"]
[Black "Kawamura, Takuto"]
[Result "0-1"]
[ECO "E32"]
[WhiteElo "1705"]
[BlackElo "1554"]
[Annotator "Fritz 11 SE (30s)"]
[PlyCount "71"]
[SourceDate "2023.03.26"]

{E32: Nimzo-Indian: Classical (4 Qc2): 4...0-0} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4
4. Qc2 O-O 5. e4 Bxc3+ 6. bxc3 d6 7. Bd3 e5 8. Ne2 h6 (8... c5 9. f3 (9. O-O
Nc6 10. d5 Na5 11. Ng3 Re8 12. f4 exf4 13. Bxf4 Ng4 14. Be2 Ne5 15. Qc1 f6 16.
Nh5 Re7 17. h3 Bd7 18. g4 Be8 19. Ng3 Bg6 20. g5 Naxc4 21. gxf6 gxf6 22. Bh6 b5
23. a4 bxa4 {Krejci,J (2518)-Dolezal,R (2344) Ostrava 2014 1-0 (36)}) 9... b6
10. d5 Ne8 11. h4 Nd7 12. g4 Rb8 13. a4 a6 14. Ng3 Kh8 15. Rb1 Rg8 16. Kf2 Nf8
17. Be3 Bd7 18. Rb2 Ng6 19. Qd2 a5 20. h5 Nf4 21. Bxf4 exf4 22. Qxf4 Qe7 23. g5
{Ivanisevic,I (2555)-Ricardi,P (2532) Dos Hermanas 2003 1-0 (53)}) 9. O-O Nc6
10. f4 b6 $146 (10... exd4 11. Ng3 Ng4 12. h3 Ne3 13. Bxe3 dxe3 14. Rae1 f6 15.
Rxe3 Be6 16. Qe2 Qd7 17. Nh5 Kh8 18. Rff3 f5 19. Rg3 Rf7 20. Rg6 fxe4 21. Bxe4
Bf5 22. Bxf5 Qxf5 23. Ree6 Raf8 24. Kh2 Nd8 25. g4 {Alvarez Pedraza,A (2551)
-Becking,S (2415) Torredembarra 2011 1/2-1/2 (34)}) 11. fxe5 dxe5 12. Ba3 {
[%cal Yc4c5] White plans c5} Re8 13. d5 {White threatens to win material: d5xc6
} Na5 14. c5 Nb7 (14... c6 15. Ng3 $14) 15. Bb5 $16 Rf8 16. Bc6 bxc5 17. Rab1
Rb8 18. Bxb7 Bxb7 (18... Rxb7 $5 19. Rxb7 Bxb7 20. Bxc5 Re8 $14) 19. Bxc5 Ba6
20. Bxf8 Rxb1 21. Rxb1 (21. Qxb1 $6 Qxf8 22. Re1 Qc5+ 23. Kh1 Qf2 $14) 21...
Qxf8 22. Ng3 Qc5+ $2 (22... Ng4 $142 23. Rb2 Qe7 $18) 23. Qf2 $18 Qxc3 (23...
Qd6 {does not win a prize} 24. Qxa7 g6 25. Rb4 $18) 24. h3 (24. Rb8+ {and
White can already relax} Kh7 25. Qf5+ g6 26. Qxf6 Qd4+ 27. Qf2 Qa1+ 28. Nf1 Kg7
$18) 24... Kf8 $4 {terrible, but the game is lost in any case} (24... Nd7 $18)
25. Rb8+ Ke7 26. Nf5+ (26. Kh2 $142 {might be the shorter path} g6 27. Qxa7 Nd7
$18) 26... Kd7 27. Ng3 (27. Kh2 $142 $5 {keeps an even firmer grip} Qc1 28. Ng3
h5 29. Nxh5 Qh6 30. Qf5+ Kd6 31. Rd8+ Ke7 32. Nxf6 Qf4+ 33. Qxf4 exf4 34. Rd7+
Kxf6 35. Rxc7 Bb5 $18) 27... Qd4 $4 {hands over the advantage to the opponent}
(27... Ke7 28. Kh2 g6 29. Qxa7 Nd7 $18) 28. Qxd4 (28. Rf8 $5 {seems even better
} Bd3 29. Rxf7+ Kd8 30. Qxd4 exd4 31. Rxg7 Nxe4 32. Nxe4 Bxe4 $18) 28... exd4
29. Rb4 d3 30. Kf2 g6 (30... c5 31. dxc6+ Kxc6 32. Rd4 $18) 31. Ke3 Kd6 $2 (
31... Kc8 $18) 32. Ra4 Bb5 33. Rxa7 Nd7 34. Ra5 (34. a4 {keeps an even firmer
grip} Bc4 35. Nf1 c6 $18) 34... Bc4 (34... c6 35. a4 Bc4 36. Nf1 cxd5 37. Kd4
$18) 35. Ra8 (35. Nf1 $142 {might be the shorter path} c6 $18) 35... Ne5 36.
Ra5 0-1

[Event "HokkaidoChessCh2023"]
[Site "?"]
[Date "2023.03.25"]
[Round "2.3"]
[White "Furuse, Mizuki"]
[Black "Kanda, Daigo"]
[Result "0-1"]
[ECO "B15"]
[WhiteElo "922"]
[BlackElo "1705"]
[Annotator "Fritz 11 SE (30s)"]
[PlyCount "144"]
[SourceDate "2023.03.26"]

{B15: Caro-Kann: 3 Nc3: 3...g6 and 3...dxe4 4 Nxe4 Nf6 5 Nxf6+ exf6} 1. e4 c6
2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Nxf6+ exf6 6. c3 Bd6 7. Nf3 O-O 8. Be2 Re8
9. O-O Nd7 10. Re1 Nf8 11. Be3 Be6 $146 (11... Bf5 12. Qd2 Qc7 13. g3 Be4 14.
Qd1 Qd7 15. Nd2 Bf5 16. Bf3 Re7 17. Nc4 Bc7 18. Bd2 Rxe1+ 19. Qxe1 Re8 20. Qf1
Bh3 21. Bg2 Bxg2 22. Qxg2 h5 23. Re1 Rxe1+ 24. Bxe1 Qe6 25. Qf1 b5 26. Ne3 {
Lagumina,G (2311)-Antonio,R (2521) Dos Hermanas 2004 1/2-1/2 (48)}) 12. Qc2 Qd7
13. Rad1 Rad8 14. Bd3 Bb8 (14... Bg4 15. Be2 $11) 15. c4 (15. Nd2 h6 $14) 15...
Qc7 {White has an active position} (15... Ng6 16. g3 $11) 16. Bf5 $14 {Black's
piece can't move: b8} Qa5 17. Bxe6 fxe6 18. Bd2 Qh5 (18... Qxa2 $4 {the pawn
must be left alone, otherwise Black will be punished} 19. Ra1 Qxa1 20. Rxa1 $18
) 19. Qb3 Qf7 20. Bc3 Ng6 21. d5 {White wins space} (21. g3 e5 22. dxe5 Rxd1
23. Qxd1 Nxe5 24. Nxe5 Bxe5 25. Bxe5 fxe5 $14 (25... Rxe5 $143 26. Rxe5 fxe5
27. Qd8+ Qf8 28. Qc7 $16)) 21... e5 (21... cxd5 $5 22. cxd5 e5 $15) 22. dxc6
$11 bxc6 23. Rxd8 Rxd8 24. Ba5 {White threatens to win material: Ba5xd8} (24.
g3 Nf8 $11) 24... Re8 (24... Bc7 25. Bxc7 Qxc7 26. g3 $11) 25. Rd1 (25. Qa4 Rc8
$11) 25... Qe7 (25... e4 26. Nd4 Ne5 27. c5 $11) 26. c5+ Kh8 27. Rc1 (27. Qc2
$142 $5 $11 {is worthy of consideration}) 27... Nf4 28. Kf1 (28. Rc4 e4 29. Ne1
$15) 28... h5 {Black has a cramped position} (28... e4 29. Ne1 $17) 29. Qc4 (
29. g3 $5 {must definitely be considered} Nd5 30. Kg1 $11) 29... e4 $17 30. Re1
Nd3 31. Re2 Qxc5 (31... Nxb2 $5 32. Rxb2 exf3 33. gxf3 Bxh2 $17) 32. Qxc5 $11 {
White forks: h5+c6} Nxc5 {Black has a new backward pawn: c6} 33. Nd2 (33. Nd4
$142 $5 $11 {should be investigated more closely}) 33... f5 $17 ({Instead of} 
33... Bxh2 34. g3 $14) 34. f3 Bf4 35. Ke1 $2 (35. g3 $142 $5 Bxd2 36. Bxd2 $17)
35... Nd3+ 36. Kf1 Nc1 (36... e3 $5 37. Nb3 Bxh2 38. Nd4 $19) 37. Re1 $17 Nd3 {
Black threatens to win material: Nd3xe1. Black forks: b2+e1} 38. Re2 Nxb2 39.
fxe4 Bxd2 (39... Bxh2 $6 40. exf5 Rxe2 41. Kxe2 $15) 40. Bxd2 Rxe4 41. Rxe4 (
41. Rf2 Nc4 42. Bg5 $19) 41... fxe4 $19 42. Ke2 (42. Bc3 Nc4 $19) 42... Nc4 43.
Be3 a6 44. Bd4 Kg8 45. Kd1 Kf7 46. Kc2 g6 47. Kc3 Nd6 48. Kb4 (48. Bb6 Nf5 $19)
48... Nb7 (48... Ke6 {might be the shorter path} 49. Kc5 $19) 49. Kc3 (49. Bf2
Ke6 50. Kc4 c5 $19) 49... Ke6 50. Kd2 (50. h3 {is not much help} Nd6 51. Be3
Nf5 $19) 50... Kd5 (50... Nd6 {keeps an even firmer grip} 51. h3 $19) 51. Ke3 (
51. Bf6 Na5 $19) 51... Nd6 52. Bc3 (52. Bh8 {doesn't get the cat off the tree}
Nf5+ 53. Ke2 e3 $19) 52... Nf5+ 53. Kd2 Kc4 (53... Nh4 {makes it even easier
for Black} 54. Ke2 Nxg2 55. Bf6 $19) 54. Bf6 a5 55. Ke2 a4 56. Kd2 c5 57. Kc2 (
57. Bb2 $19 {is still a small chance}) 57... Ne3+ 58. Kd2 Nxg2 (58... Nd5 $142
{makes it even easier for Black} 59. Bg7 a3 $19) 59. Bc3 (59. Bg5 $19 {praying
for a miracle}) 59... g5 (59... e3+ $142 {seems even better} 60. Kc2 e2 61. Ba5
$19) 60. Bf6 g4 61. Bg5 e3+ $1 {the end of the story} 62. Bxe3 Nxe3 63. Kxe3
Kc3 64. Kf4 Kd3 65. Kg5 c4 66. Kxh5 c3 67. Kxg4 c2 68. h4 c1=Q 69. h5 (69. Kf5
{does not improve anything} Qf1+ 70. Ke5 Qe2+ 71. Kd6 Qxa2 72. Kd7 Qd5+ 73. Ke8
a3 74. Ke7 a2 75. Ke8 a1=Q 76. Ke7 Qg7+ 77. Ke8 Qgf7#) 69... Ke4 70. a3 (70.
Kg3 {hardly improves anything} Qg1+ 71. Kh3 Kf4 72. h6 Qg3#) 70... Qg1+ 71. Kh4
(71. Kh3 {doesn't improve anything} Kf4 72. h6 Qg3#) 71... Kf4 72. Kh3 (72. h6
{cannot change what is in store for White} Qg4#) 72... Qg3# 0-1

[Event "HokkaidoChessCh2023"]
[Site "?"]
[Date "2023.03.25"]
[Round "2.4"]
[White "Takeuchi, Hiroshi"]
[Black "Nishimori, Toshiyuki"]
[Result "1-0"]
[ECO "A80"]
[WhiteElo "1418"]
[BlackElo "1585"]
[Annotator "Fritz 11 SE (30s)"]
[PlyCount "53"]
[SourceDate "2023.03.26"]

{A80: Dutch Defence: Unusual White second moves} 1. d4 f5 2. Bf4 e6 3. Nf3 Nf6
4. e3 Bb4+ $146 (4... g6 5. h3 Bg7 6. c4 d6 7. Nc3 O-O 8. Be2 Qe7 9. O-O (9.
Qb3 b6 10. O-O Bb7 11. Rfd1 Nc6 12. Rac1 Kh8 13. Qa3 Ne4 14. Bh2 Nxc3 15. Rxc3
a5 16. Rc2 g5 17. Rcd2 f4 18. c5 Nb4 19. cxd6 cxd6 20. exf4 gxf4 21. Ne1 Rac8
22. Bf3 Bh6 23. Qb3 Ba6 {Piket,J (2590)-Short,N (2655) Monte Carlo 1993 1-0 
(52)}) 9... h6 10. Qc2 Nbd7 11. Bh2 Qf7 12. c5 dxc5 13. dxc5 c6 14. Ne5 Nxe5
15. Bxe5 Nd5 16. Bxg7 Qxg7 17. Rfd1 Kh7 18. e4 fxe4 19. Nxe4 {Lebel,P (2255)
-Hansen,L (2460) Challes 1990 0-1 (45)}) (4... d5 5. Be2 (5. Nbd2 Bd6 6. Ne5
O-O 7. Bd3 Ne4 8. f3 Nxd2 9. Qxd2 c5 10. c3 Nc6 11. Nxc6 bxc6 12. Bxd6 Qxd6 13.
O-O a5 14. Rae1 Bd7 15. Bb1 Rae8 16. Rd1 e5 17. dxe5 Qxe5 18. c4 Be6 19. cxd5
cxd5 {Mirkovic,S (2390)-Petkovic,R (2295) Kladovo 1991 1/2-1/2}) 5... Bd6 6.
Bxd6 Qxd6 7. O-O Nbd7 8. c4 c6 9. Nc3 O-O 10. Qc2 Ne4 11. a3 Rf6 12. b4 Rh6 13.
g3 Ndf6 14. Ne5 Bd7 15. c5 Qe7 16. a4 g5 17. b5 g4 18. Nxe4 Nxe4 19. Rab1 {
Jordan,D (2187)-Poppe,H (2243) Germany 2003 1-0 (32)}) (4... c6 5. Nbd2 d5 6.
Bd3 Bd6 7. Ne5 O-O 8. c3 b6 9. h4 c5 10. Qe2 Qc7 11. Ndf3 Nbd7 12. O-O c4 13.
Bc2 Rb8 14. a4 a6 15. Rfc1 b5 16. axb5 axb5 17. b4 Ng4 18. Nxd7 Bxd7 19. g3 {
Kovacevic,S (2370)-Petkovic,R (2295) Kladovo 1991 1-0 (42)}) 5. c3 {White
threatens to win material: c3xb4} Be7 6. Bd3 O-O 7. h3 {Consolidates g4} d6 {
Secures e5} 8. O-O b6 9. Nbd2 Bb7 10. Re1 Nbd7 $2 (10... Nc6 11. Qb3 d5 12. a4
$14) 11. Bh2 $4 {not a good decision, because now the opponent is right back
in the game} (11. Ng5 $5 Bd5 12. Bc4 Re8 13. Nxe6 Qc8 $18) 11... Qe8 (11... Ne4
$142 $5 $11 {should be examined more closely}) 12. e4 $16 Qg6 $4 {solves
nothing} (12... Nxe4 $142 13. Nxe4 Bxe4 14. Bxe4 fxe4 15. Rxe4 Rf6 $16) 13.
exf5 $18 Bxf3 (13... Qh5 $18 {a last effort to resist the inevitable}) 14. Nxf3
Qh5 15. Rxe6 Rfe8 16. Qc2 Nf8 17. Re2 Kh8 (17... N8d7 {doesn't do any good} 18.
Rae1 Bf8 19. Re6 $18) 18. Rae1 Ng8 (18... Bd8 {is not the saving move} 19. Rxe8
Nxe8 20. Qb3 $18) 19. Bb5 Red8 (19... a6 {the only chance to get some
counterplay} 20. Bxe8 Rxe8 $18) 20. Rxe7 Nxe7 21. Rxe7 c5 (21... Qh6 {does not
save the day} 22. Bg3 Rac8 23. Bh4 $18) 22. Qe4 d5 23. Qe5 Qh6 24. Qe1 (24. g4
Qf6 25. g5 Qxe5 26. Bxe5 Ne6 27. fxe6 Rg8 28. Nh4 cxd4 29. Nf5 h5 30. Nxg7 Raf8
31. Nf5+ Rg7 32. Bxg7+ Kg8 33. Nh6+ Kh7 34. Bd3+ Rf5 35. Bxf5#) 24... cxd4 (
24... a6 {cannot change destiny} 25. Ne5 Qf6 26. Nf7+ Kg8 27. Nxd8 axb5 28. Bc7
$18) 25. Nxd4 (25. Be5 Ne6 26. fxe6 Rg8 27. Bxd4 Rgf8 28. Bxg7+ Qxg7 29. Rxg7
Kxg7 30. Qe5+ Rf6 31. Nd4 Kg6 32. Bd3+ Rf5 33. Bxf5+ Kh5 34. Qf6 Rg8 35. g4+
Rxg4+ 36. hxg4#) 25... Rac8 26. Be5 Qg5 27. Rxg7 (27. Rxg7 Rd7 28. Rxg5+ Rg7
29. Bxg7+ Kg8 30. Bh6+ Kf7 31. Rg7+ Kf6 32. Qe7#) 1-0

[Event "HokkaidoChessCh2023"]
[Site "?"]
[Date "2023.03.25"]
[Round "2.5"]
[White "Matsumoto, Kenshin"]
[Black "Al Jabarat, Thamer"]
[Result "0-1"]
[ECO "A60"]
[WhiteElo "1413"]
[BlackElo "1309"]
[Annotator "Fritz 11 SE (30s)"]
[PlyCount "62"]
[SourceDate "2023.03.26"]

{A60: Modern Benoni: Early Divergences} 1. d4 e6 2. c4 c5 3. d5 Nf6 4. Nc3 Bd6
(4... exd5 5. cxd5 g6 6. d6 Qb6 7. Bf4 Qxb2 8. Be5 Ne4 9. Rc1 f6 10. Nxe4 Qxe5
11. Rxc5 Qxe4 12. Rxc8+ Kf7 13. Qb3+ Kg7 14. Rc4 Qd5 15. e4 Qa5+ 16. Kd1 Qb6
17. Qxb6 axb6 18. Rc2 Bxd6 19. Bc4 {Rao,V (2420)-Shabalov,A (2590)
Philadelphia 1993 0-1 (40)}) 5. Nb5 (5. g3 Be5 6. Bd2 O-O 7. Bg2 d6 8. Nf3 Bxc3
9. Bxc3 Ne4 10. Rc1 Nxc3 11. Rxc3 e5 12. O-O a6 13. a3 a5 14. Nd2 f5 15. f4 e4
16. g4 g6 17. Rg3 Nd7 18. gxf5 Nf6 19. fxg6 Bf5 {Lekic,D (2430)-Milovic,J 
(2309) Cetinje 2013 1-0 (38)}) 5... Bc7 6. Nxc7+ Qxc7 7. dxe6 $146 (7. g3 exd5
8. cxd5 d6 9. Bg2 O-O 10. Nf3 b5 11. O-O Bb7 12. Nh4 Re8 13. Bf4 a5 14. Nf5 Ra6
15. Re1 Bc8 16. Qc2 Bxf5 17. Qxf5 Nbd7 18. Qc2 c4 19. h3 Nb6 20. e4 Nfd7 21.
Be3 Raa8 {Gagunashvili,M (2405)-Chikovani,V (2275) Tbilisi 2001 1-0 (37)}) 7...
fxe6 {White has the pair of bishops} 8. Nf3 O-O 9. g3 Nc6 10. a3 {Prevents
intrusion on b4} (10. Bg2 d5 $11) 10... d5 $15 11. cxd5 exd5 12. Bg2 Bg4 13.
O-O {White is behind in development.} Rad8 {White has a cramped position} 14.
Qc2 {White threatens to win material: Qc2xc5} b6 {Black has an active position}
15. Bf4 {White threatens to win material: Bf4xc7} Qd7 16. Rfd1 Bh3 17. Ne5 $2 (
17. Bxh3 $142 {and White hangs on} Qxh3 18. Qa4 $15) 17... Nxe5 $19 18. Bxe5
Bxg2 19. Kxg2 Ne4 {Black threatens to win material: Ne4xf2} (19... Ng4 $142 $5
20. Bf4 g5 $19) 20. f3 $15 {White threatens to win material: f3xe4} Ng5 21. g4
Rde8 22. Bc3 $4 {the position is going down the drain} (22. Bg3 $142 $17) 22...
d4 $19 23. Qb3+ (23. h4 Nxf3 24. exf3 Rxf3 25. Kxf3 Re3+ 26. Kf2 Qxg4 27. Bxd4
cxd4 28. Kf1 Rf3+ 29. Qf2 Qh3+ 30. Kg1 Rxf2 31. Kxf2 Qxh4+ 32. Ke2 Qh2+ 33. Kf3
Qxb2 34. Ke4 $19) 23... Kh8 24. Be1 (24. Qc2 {is one last hope} Qc6 25. Rd3
dxc3 26. Rxc3 $19) 24... Rxe2+ 25. Kg3 Rxf3+ (25... Qd6+ 26. f4 Qxf4+ 27. Kh4
Rxh2+ 28. Qh3 Rxh3#) 26. Qxf3 Nxf3 (26... Qc7+ 27. Qf4 Re3+ 28. Kg2 Qc6+ 29.
Qe4 Qxe4+ 30. Kf2 Nh3+ 31. Kf1 Qh1#) 27. Kxf3 (27. Rd2 {doesn't get the bull
off the ice} Nxd2 28. Bxd2 Rxd2 29. Kh3 Qe6 30. Rh1 Rd3+ 31. Kg2 Qe2+ 32. Kg1
Rd1#) 27... Rxb2 (27... Re3+ 28. Kf2 Qxg4 29. Kf1 Re2 30. Bf2 Qf3 31. Kg1 Qxf2+
32. Kh1 Qxh2#) 28. h3 (28. Rd2 {doesn't change the outcome of the game} Qd5+
29. Kf2 d3 $19) 28... h6 (28... Qd5+ 29. Kg3 Rg2+ 30. Kh4 g5+ 31. Kh5 Qg8 32.
Rxd4 Qg6#) 29. Bg3 d3 (29... Qd5+ 30. Kf4 g5#) 30. Be5 (30. Re1 {cannot undo
what has already been done} Qd5+ 31. Re4 Re2 32. Bf2 Qxe4+ 33. Kg3 Qe5+ 34. Kg2
Qxa1 35. Kg3 Qe5+ 36. Kg2 Qd4 37. g5 Qxf2+ 38. Kh1 Qg2#) 30... Rb3 (30... Qd5+
31. Kf4 Re2 32. Bxg7+ Kxg7 33. Kg3 Qd6+ 34. Kf3 Qf6+ 35. Kg3 Qf2#) 31. Kg2 (31.
Rd2 {what else?} Qd5+ 32. Kf4 $19) 31... Qd5+ (31... Qd5+ 32. Kg1 Qxe5 33. Rab1
Rxa3 34. Rd2 Qe3+ 35. Kg2 Qxd2+ 36. Kf3 Qe2+ 37. Kf4 d2 38. Rb3 d1=Q 39. Rd3
Qdxd3 40. g5 Qde4#) 0-1

[Event "HokkaidoChessCh2023"]
[Site "?"]
[Date "2023.03.25"]
[Round "2.6"]
[White "Kihara, Kotaro"]
[Black "Ito, Katsuhide"]
[Result "1-0"]
[ECO "D08"]
[WhiteElo "1351"]
[BlackElo "1233"]
[Annotator "Fritz 11 SE (30s)"]
[PlyCount "89"]
[SourceDate "2023.03.26"]

{D08: Albin Counter Gambit} 1. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3 Nc6 5. Bg5 {
White threatens to win material: Bg5xd8} Bb4+ $146 (5... f6 6. exf6 gxf6 7. Bf4
Nge7 8. e3 Ng6 9. Bd3 Bb4+ 10. Nbd2 dxe3 11. Bxg6+ hxg6 12. Bxe3 Bf5 13. a3 Be7
14. Qb3 Qd7 15. O-O-O O-O-O 16. Qc3 Qe6 17. Bd4 Rd7 18. Rhe1 Qf7 19. Nb3 Rhd8
20. h3 {Markos,J (2225)-Chetverik,M (2300) Bratislava 1998 0-1}) (5... Be7 6.
h4 (6. Bxe7 Ngxe7 7. g3 (7. Nbd2 Bg4 8. Qb3 O-O 9. O-O-O Na5 10. Qa4 c5 11. h3
Bd7 12. Qa3 b6 13. e3 dxe3 14. Qxe3 Qc7 15. Ne4 Nf5 16. Qg5 Kh8 17. g4 Nd4 18.
Nxd4 cxd4 19. Rxd4 Be6 20. Nd6 f6 21. exf6 Rxf6 {Szaz,F (2178)-Nagy,I (2225)
Hungary 2000 0-1 (34)}) 7... Bg4 8. Bg2 Qd7 9. Nbd2 O-O-O 10. O-O Ng6 11. Qa4
Bh3 12. e6 Bxe6 13. b4 Kb8 14. b5 Nce5 15. Ng5 Bf5 16. Nb3 Qe7 17. Ne4 Nd7 18.
Ned2 Qxe2 19. c5 Bd3 20. Rfe1 Qh5 {Wolrich,C (2161)-Jossien,R (2187) Romans
1999 1-0 (36)}) 6... Bg4 7. Nbd2 h6 8. Bf4 Qd7 9. g3 a5 10. Qa4 Ra6 11. O-O-O
Bb4 12. Nb3 Nge7 13. Nbxd4 O-O 14. a3 Qc8 15. Bg2 Bd7 16. Qc2 Bc5 17. e3 a4 18.
Nxc6 Nxc6 19. Nd4 Na5 20. Be4 {Vescovi,G (2592)-Mekhitarian,K (2425) Sao Paulo
2006 0-1}) (5... Qd7 6. a3 a5 7. h4 h6 8. Bf4 Bc5 9. Nbd2 Qf5 10. g3 Be6 11.
Bh3 Qg6 12. Bxe6 Qxe6 13. Qa4 O-O-O 14. Nb3 Ba7 15. Nxa5 Nxa5 16. Qxa5 Kb8 17.
Qa4 f6 18. h5 fxe5 19. Nxe5 Nf6 20. Qc2 {Arkell,K (2517)-Richmond,P (2253)
Hinckley Island 2009 1-0 (31)}) (5... f6 6. exf6 Nxf6 7. Nbd2 $11) 6. Nbd2 Be7
(6... f6 7. exf6 Nxf6 8. Qc2 $11) 7. Bxe7 (7. h4 Nh6 8. Bxh6 gxh6 $14) 7...
Qxe7 $14 8. a3 {Controls b4} (8. Qb3 Nh6 $14) 8... Bf5 {White's piece can't
move: f1} 9. Nb3 {[%cal Rb3d4,Rd1d4,Rf3d4,Gc6d4] Will d4 fall?. White
threatens to win material: Nb3xd4} O-O-O 10. g3 (10. Qd2 Nh6 11. Qf4 g5 12.
Qxg5 Qxg5 13. Nxg5 Nxe5 $11) 10... Be4 (10... Nxe5 11. Bg2 d3 12. O-O Nxf3+ 13.
Bxf3 dxe2 14. Qxe2 Qxe2 15. Bxe2 $15) 11. Bg2 d3 (11... Nxe5 $5 12. O-O Kb8 $11
) 12. O-O $11 Nxe5 13. Nxe5 Qxe5 14. Bxe4 Qxe4 15. exd3 Rxd3 16. Nc5 {White
threatens to win material: Nc5xe4. White forks: e4+d3} Rxd1 17. Nxe4 Rd4 {
Black threatens to win material: Rd4xe4. Black forks: c4+e4} 18. Ng5 Nh6 (18...
Rxc4 $4 {the pawn is indigestible} 19. Nxf7 Rc2 20. b4 $18) 19. Rac1 Re8 20.
Rfd1 {White threatens to win material: Rd1xd4} ({Worse is} 20. Nxh7 f6 $17)
20... Nf5 (20... Rxd1+ 21. Rxd1 f6 22. Nf3 $11 (22. Nxh7 $143 Rh8 $17)) 21.
Rxd4 (21. Nxf7 $5 {is noteworthy} Re2 22. b4 $14) 21... Nxd4 $11 22. Rd1 c5 23.
Nxf7 ({Less advisable is} 23. Nxh7 f6 $17) 23... Rf8 (23... Re7 $142 $5 {
is interesting} 24. Ng5 h6 $11) 24. Nd6+ Kc7 25. Nb5+ (25. Ne4 $5 b6 26. Kg2
$16) 25... Nxb5 $11 26. cxb5 a6 (26... Rf3 $5 $11 {is an interesting
alternative}) 27. bxa6 bxa6 28. Kf1 Rb8 {Black threatens to win material:
Rb8xb2} 29. Rd2 c4 {White has a new backward pawn: b2} 30. Rc2 {White
threatens to win material: Rc2xc4} Kd6 31. Ke2 Kd5 32. Kd2 (32. Rd2+ Kc6 $16)
32... Rb3 {Here comes the goal-getter} 33. Kc1 Kd4 34. Rd2+ Kc5 35. Rd7 Rd3 $4
{cause more grief} (35... c3 $142 36. bxc3 Rxc3+ 37. Kd1 h6 $14) 36. Rxg7 (36.
b4+ Kb5 37. Rxd3 cxd3 $18) 36... c3 (36... Rf3 37. Rxh7 Rxf2 $18) 37. Rc7+ Kd4
(37... Kb6 {there is nothing else anyway} 38. Rxc3 Rd7 $18) 38. bxc3+ (38. Rxc3
$142 {seems even better} Rxc3+ 39. bxc3+ Kd5 $18) 38... Rxc3+ (38... Ke5 {
the last chance for counterplay} 39. f4+ Ke4 $18) 39. Rxc3 Kxc3 40. f4 Kd4 41.
Kd2 Ke4 42. Kc3 Kd5 43. Kb4 Kc6 44. Ka5 Kb7 45. f5 1-0

[Event "HokkaidoChessCh2023"]
[Site "?"]
[Date "2023.03.25"]
[Round "3.1"]
[White "Sugimoto, Koichi"]
[Black "Kanda, Daigo"]
[Result "1-0"]
[ECO "E14"]
[WhiteElo "1959"]
[BlackElo "1705"]
[Annotator "Fritz 11 SE (30s)"]
[PlyCount "31"]
[SourceDate "2023.03.26"]

{E14: Queen's Indian: Classical Variation (4 e3)} 1. d4 Nf6 2. c4 e6 3. Nf3 b6
4. e3 Bb7 5. Bd3 d5 6. cxd5 exd5 7. O-O Be7 8. Nc3 O-O 9. b3 Ba6 (9... a6 10.
Bb2 Bd6 11. a3 Nbd7 12. b4 Ne4 13. Qb3 Ndf6 14. a4 c6 15. a5 b5 16. Rad1 Qe7
17. Na2 Bc7 18. Nc1 Bd6 19. Ba3 Bc8 20. Be2 Bg4 21. Qb2 Rfc8 22. Nd3 Bb8 23.
Qc2 Nd6 24. Rfe1 {Rozentalis,E (2586)-Aronian,L (2518) Las Vegas 1999 0-1 (60)}
) 10. Bb2 (10. Bxa6 Nxa6 11. Ne5 Ne4 12. Nxe4 dxe4 13. Nc6 Qe8 14. Nxe7+ Qxe7
15. Qe2 Nb4 16. Ba3 a5 17. Rac1 Rfd8 18. Rc4 Rd5 19. Rfc1 Ra7 20. Qg4 g6 21. g3
f5 22. Qe2 c5 23. dxc5 bxc5 24. Bxb4 axb4 {Franco Ocampos,Z (2510)-Dorin,M 
(2389) Asuncion 2002 1/2-1/2}) 10... Qc8 11. Rc1 Bxd3 $146 (11... Qb7 12. Ne5
Rd8 13. Bxa6 Nxa6 14. Qf3 Bf8 15. Ne2 c5 16. Ng3 Ne4 17. Qg4 g6 18. dxc5 bxc5
19. Nxe4 dxe4 20. Rcd1 Bg7 {1/2-1/2 (20) Doettling,F (2420)-Heidenfeld,M (2315)
Germany 1999}) 12. Qxd3 Qa6 (12... Nbd7 13. Ne5 $16) 13. Qxa6 $16 Nxa6 14. Ne5
Rfc8 15. Nc6 Bf8 16. Nb5 1-0

[Event "HokkaidoChessCh2023"]
[Site "?"]
[Date "2023.03.25"]
[Round "3.2"]
[White "Kawamura, Takuto"]
[Black "Yoshii, Yukihiko"]
[Result "1-0"]
[ECO "E08"]
[WhiteElo "1554"]
[BlackElo "1699"]
[Annotator "Fritz 11 SE (30s)"]
[PlyCount "75"]
[SourceDate "2023.03.26"]

{E08: Closed Catalan: Main Line: 7 Qc2} 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 Be7
5. Bg2 c6 6. Qc2 (6. O-O Nbd7 7. Qc2 b6 (7... Ne4 8. Nc3 f5 9. b3 g5 10. Bb2 h5
11. Ne1 h4 12. Nxe4 dxe4 13. d5 e5 14. dxc6 bxc6 15. Bxe4 fxe4 16. Qxe4 Rh6 17.
Nf3 hxg3 18. hxg3 Qc7 19. Rfd1 Bb7 20. Qg4 c5 21. e4 Qc6 22. Re1 {Voiska,M 
(2314)-Raeva,E (2215) Vratsa 2007 0-1 (57)}) 8. Rd1 Ba6 9. b3 Rc8 10. Nbd2 c5
11. e4 cxd4 12. exd5 exd5 13. Nxd4 O-O 14. Nf1 b5 15. Ne3 bxc4 16. Nxd5 Nxd5
17. Bxd5 cxb3 18. Qxb3 Nc5 19. Qf3 Bf6 20. Rb1 Bd3 {Harikrishna,P (2665)
-Vocaturo,D (2545) Wijk aan Zee 2012 1-0}) 6... h6 $146 {Consolidates g5} (6...
O-O 7. Nbd2 Na6 8. O-O Bd7 9. e4 dxc4 10. Nxc4 c5 11. dxc5 Nxc5 12. Nfe5 b5 13.
Nxd7 Nfxd7 14. Ne3 Rc8 15. Rd1 Qb6 16. Qe2 Ne5 17. Ng4 Nxg4 18. Qxg4 Na4 19.
Be3 Bc5 20. Bxc5 Qxc5 21. Qe2 {Bereolos,P (2314)-Pasalic,M (2401) ICC INT 2008
1/2-1/2 (64)}) (6... Nbd7 7. Nbd2 b6 8. e4 O-O 9. e5 Ne8 10. h4 h6 11. O-O Ba6
12. Re1 Rc8 13. b3 c5 14. dxc5 Bxc5 15. Qd1 Nc7 16. a3 dxc4 17. Nxc4 Nb8 18.
Nd6 Bxd6 19. exd6 Nd5 20. Bb2 Rc6 21. Qd4 {Ghaem Maghami,E (2609)-Xu,Y (2463)
Al Ain 2015 1/2-1/2 (40)}) 7. O-O O-O 8. Nbd2 Nbd7 9. b3 Bd6 (9... b5 10. Re1
$11) 10. Bb2 Re8 11. Ne5 Nh7 $2 (11... c5 $142 $14 {and Black is still in the
game}) 12. Nxf7 $1 $18 {Deflection: h7} Kxf7 13. Qxh7 Nf6 14. Qd3 Kg8 15. e4
dxe4 16. Nxe4 Be7 (16... Nxe4 17. Bxe4 Bd7 18. f4 $18) 17. Rad1 Rf8 18. Bc3 Qc7
19. Rfe1 Bd7 (19... Nxe4 20. Rxe4 Bf6 21. Rde1 $18) 20. Bh3 (20. Nc5 {might be
the shorter path} Bxc5 21. dxc5 Rad8 $18) 20... Rae8 (20... b6 $18) 21. Bg2 Qc8
$4 {Black lets it slip away} (21... Ra8 22. Nc5 Bxc5 23. dxc5 Rad8 $18) 22. Nd2
(22. Nc5 {and White can already relax} Bxc5 23. dxc5 Re7 $18) 22... Bd8 (22...
Bd6 23. Nf3 $18) 23. Nf3 Bc7 24. Ne5 Bxe5 (24... a5 $18 {praying for a miracle}
) 25. dxe5 Ng4 (25... Nd5 {does not help much} 26. cxd5 exd5 27. Qd4 $18) 26.
f3 (26. Qxd7 {might be the shorter path} h5 $18) 26... Nxe5 (26... Nxh2 {
is no salvation} 27. Kxh2 Re7 28. Bb4 $18) 27. Bxe5 Rd8 (27... Rf7 $18 {
otherwise it's curtains at once}) 28. Qg6 Rf7 29. Bh3 Re8 30. c5 (30. Re4 $142
{and White has it in the bag} Qd8 31. Rf4 Qe7 $18) 30... Ree7 31. f4 Be8 (31...
b6 {doesn't change anything anymore} 32. Bg4 $18) 32. Qe4 Bd7 33. Bd6 Re8 34.
Bg4 (34. Bf1 $142 {makes it even easier for White} e5 35. Bc4 Bf5 36. Bxf7+
Kxf7 $18) 34... Rf6 (34... e5 {does not solve anything} 35. Bh5 Bf5 36. Bxf7+
Kxf7 37. Qa4 $18) 35. Be5 Ref8 (35... Rf7 {there is nothing better in the
position} 36. Bh5 Ref8 37. Bxf7+ Rxf7 $18) 36. Bxf6 Rxf6 37. Rxd7 $1 {Decoy: f7
} Qxd7 38. Bxe6+ (38. Bxe6+ Rxe6 39. Qxe6+ Qxe6 40. Rxe6 $18) 1-0

[Event "HokkaidoChessCh2023"]
[Site "?"]
[Date "2023.03.25"]
[Round "3.3"]
[White "Kihara, Kotaro"]
[Black "Akai, Kiyotaka"]
[Result "0-1"]
[ECO "D40"]
[WhiteElo "1351"]
[BlackElo "1705"]
[Annotator "Fritz 11 SE (30s)"]
[PlyCount "80"]
[SourceDate "2023.03.26"]

{D40: Queen's Gambit Declined: Semi-Tarrasch with 5 e3} 1. d4 d5 2. c4 e6 3.
Nc3 c5 4. Nf3 Nc6 5. e3 (5. Bf4 dxc4 6. dxc5 Qa5 $14) 5... Nf6 $11 6. Bd3 Be7
7. dxc5 Bxc5 8. O-O O-O 9. a3 {Covers b4} a5 10. Qb3 d4 {Black threatens to
win material: d4xc3} 11. Na4 {White threatens to win material: Na4xc5} Ba7 12.
exd4 Nxd4 13. Nxd4 Bxd4 14. Bg5 (14. Be3 Bxe3 15. fxe3 e5 $14) 14... h6 15. Bh4
Bd7 16. Bxf6 (16. Rad1 $5 Bc6 17. Nc3 $11) 16... Bxa4 ({Not} 16... gxf6 17.
Rad1 f5 18. c5 Bxa4 19. Qxa4 $11) 17. Qxa4 Qxf6 18. Qb3 b6 19. Rab1 Rad8 20.
Be4 Qf4 {Black threatens to win material: Qf4xe4} 21. Bf3 (21. Qf3 Qc7 $15)
21... Bc5 22. Rbd1 Rd2 23. g3 {White threatens to win material: g3xf4} Qd6 24.
Qa4 Rd8 25. b4 (25. Rxd2 Qxd2 26. b4 axb4 27. axb4 Qxb4 (27... Bxb4 $2 28. Rd1
Qg5 29. Qxb4 $18) 28. Qxb4 Bxb4 $15) 25... axb4 (25... Bxf2+ 26. Rxf2 Rxd1+ 27.
Bxd1 Qxd1+ 28. Qxd1 Rxd1+ 29. Kg2 axb4 30. axb4 $19) 26. axb4 (26. Rxd2 Qxd2
27. axb4 Qxb4 (27... Bxb4 $2 28. Rd1 Qg5 29. Rxd8+ Qxd8 30. Qxb4 $18) 28. Qxb4
Bxb4 $15) 26... Bxb4 (26... Bxf2+ $142 $5 27. Kg2 Be1+ 28. Rxd2 Qxd2+ (28...
Bxd2 $6 29. Rd1 $15) 29. Kh3 Qxb4 30. Qxb4 Bxb4 $19) 27. Rxd2 $15 Bxd2 (27...
Qxd2 $2 28. Rd1 Qg5 29. Rxd8+ Qxd8 30. Qxb4 $18) 28. Rd1 Qc7 29. Qc2 (29. Qc6
Qxc6 30. Bxc6 Rd6 $11) 29... Bg5 30. Ra1 (30. h4 Rxd1+ 31. Qxd1 Be7 $17) 30...
g6 31. Ra6 Rd2 {Black threatens to win material: Rd2xc2} 32. Ra8+ Rd8 33. Ra6
Bf6 34. Ra3 Kg7 35. Rd3 (35. Ra8 $5 $17) 35... Rc8 $19 36. Rb3 Bd4 37. Rb4 (37.
Be2 $142 $19) 37... Qc5 38. Ra4 (38. Qb3 $19) 38... Rc7 (38... b5 {and Black
can already relax} 39. Ra8 Rxa8 40. Bxa8 bxc4 41. Kg2 $19) 39. Kg2 $2 (39. Qe2
$142 $17) 39... b5 $19 40. Ra5 Qxc4 (40... Qxc4 41. Qxc4 bxc4 $19) 0-1

[Event "HokkaidoChessCh2023"]
[Site "?"]
[Date "2023.03.25"]
[Round "3.4"]
[White "Al Jabarat, Thamer"]
[Black "Takeuchi, Hiroshi"]
[Result "0-1"]
[ECO "A45"]
[WhiteElo "1418"]
[BlackElo "1309"]
[Annotator "Fritz 11 SE (30s)"]
[PlyCount "102"]
[SourceDate "2023.03.26"]

{A45: Trompowsky Attack} 1. d4 Nf6 2. Nc3 d6 (2... g6 3. Bf4 d6 4. Qd2 c6 5. e4
Qa5 6. h3 Nbd7 7. Nf3 e5 8. Be3 Bg7 9. Bd3 O-O 10. O-O Re8 11. Rfe1 b5 12. a3
a6 13. dxe5 dxe5 14. Rad1 {1/2-1/2 (14) Berov,A (2490)-Gipslis,A (2450)
Dortmund 1998}) (2... a6 3. e4 d6 4. Bg5 c6 5. f4 Qa5 6. Bd3 h6 7. Bxf6 gxf6 8.
f5 e5 9. d5 Nd7 10. a3 h5 11. Qf3 Bh6 12. Qf2 Ke7 {1/2-1/2 (12) Dobos,J (2272)
-Istvanovszky,K (2266) Hungary 2013}) 3. b3 $146 (3. g3 Nbd7 4. Bg2 e5 (4... c6
5. a4 e5 6. Nf3 Be7 7. O-O O-O 8. d5 cxd5 9. Nxd5 Nxd5 10. Qxd5 Nc5 11. Be3 Be6
12. Qd2 f6 13. Nh4 d5 14. Bxc5 Bxc5 15. Rfd1 e4 16. Nf5 Qd7 17. b4 Bb6 18. Nd4
Rad8 19. a5 {Domont,A (2377)-Kurmann,O (2431) Leukerbad 2011 1/2-1/2}) 5. e4 g6
6. Nge2 Bg7 7. O-O exd4 8. Nxd4 O-O 9. Bg5 h6 10. Bc1 Re8 11. f3 d5 12. exd5
Nb6 13. Re1 Rxe1+ 14. Qxe1 Nfxd5 15. Nde2 Nb4 16. Bf4 Nxc2 17. Rd1 Bd4+ {
Boguszlavszkij,J (2254)-Takacs,B (2346) Zalakaros 2010 1/2-1/2 (60)}) (3. e4 $5
$14 {is an interesting idea}) 3... g6 $11 4. Bb2 Bg7 5. Nf3 O-O 6. e3 c6 {
Secures b5} 7. Bd3 Qc7 8. h4 (8. O-O Na6 $11) 8... Bg4 9. Qd2 Nbd7 10. Nh2 Be6
11. f3 {Controls e4+g4} (11. Nf3 $5 $11) 11... c5 $15 12. O-O-O c4 {Black
threatens to win material: c4xd3} 13. Be2 cxb3 14. axb3 Nb6 15. e4 {[%cal
Yd4d5] White prepares the advance d5} a5 16. d5 {This push gains space} (16.
Nb5 $5 {is worth consideration} Qd8 17. d5 $15) 16... Bd7 $17 {[%cal Ya5a4]
Black prepares the advance a4} 17. Ng4 $2 (17. e5 $142 $5 dxe5 18. d6 exd6 19.
Qxd6 $17) 17... Nxg4 $19 18. fxg4 a4 19. bxa4 $2 (19. h5 a3 20. Ba1 a2 $19)
19... Nxa4 (19... Rfc8 20. Rh3 Nxa4 21. Nxa4 Bxb2+ 22. Kxb2 Bxa4 23. Rc3 Qb6+
24. Kc1 Bxc2 25. Rxc8+ Rxc8 26. Qxc2 Qe3+ 27. Rd2 Rxc2+ 28. Kxc2 Qxe4+ 29. Kb2
Qxg2 30. h5 $19) 20. Nxa4 Bxb2+ (20... Bxa4 $6 21. Bxg7 Kxg7 22. Qd4+ f6 23.
Kd2 $17) 21. Kxb2 Rxa4 22. Rb1 Rfa8 23. Bf3 (23. Rh3 {the only chance to get
some counterplay} Rxe4 24. Rb3 Bxg4 25. Bd3 $19) 23... Ra2+ (23... Qb6+ 24. Kc1
Ra1 25. Qc3 Qxb1+ 26. Kd2 Qxh1 27. Qc6 bxc6 28. Kd3 R8a3+ 29. c3 Qe1 30. g5
Rxc3+ 31. Kd4 Ra4#) 24. Kc1 Ba4 (24... Qc5 $142 {and Black has triumphed} 25.
Kd1 Ra1 $19) 25. Bd1 Rc8 (25... Qc5 $142 {and Black can celebrate victory} 26.
Rh3 Bxc2 27. Bxc2 Rc8 $19) 26. Rb2 Rxb2 27. Kxb2 Bd7 (27... Qb6+ 28. Kc1 Rc4
29. Qd3 $19) 28. h5 (28. Rh3 $5 $17) 28... Qb6+ $19 29. Kc1 Ra8 (29... Qa6 30.
Kb1 Qb5+ 31. Kc1 $19) 30. Qc3 $17 g5 31. Rh3 $2 (31. h6 f6 $17) 31... f6 (31...
Qg1 $142 $5 32. Rg3 f6 $19) 32. Rd3 $17 Rc8 (32... Qf2 33. Qc7 Qf4+ 34. Kb1 $17
) 33. Qd4 Qa5 34. Bf3 (34. Qe3 Rc4 $17) 34... Bb5 35. Rb3 Rc4 36. Rxb5 $4 {
strolling merrily down the path to disaster} (36. Qd3 Rc5 37. Qd2 Qa1+ 38. Rb1
Qa3+ 39. Kd1 Rxc2 40. Kxc2 (40. Qxc2 $4 Ba4 41. Kd2 Bxc2 42. Kxc2 Qc5+ 43. Kb2
b5 $19) 40... Ba4+ 41. Rb3 Qxb3+ 42. Kc1 $19) 36... Qxb5 $19 (36... Rxd4 $4 {
Black will regret his greed} 37. Rxa5 Rb4 38. Kd2 $18) 37. Qd3 (37. Be2 {
is not much help} Rxd4 38. Bxb5 Rxe4 $19) 37... Qa4 (37... Qc5 $142 {makes it
even easier for Black} 38. e5 fxe5 $19) 38. Kd2 (38. c3 $19 {desperation})
38... Rd4 39. Be2 Rxd3+ 40. Bxd3 (40. Kxd3 {does not save the day} b5 $19)
40... Qa1 41. c4 Qb2+ 42. Ke3 Qxg2 (42... Qc1+ $142 {seems even better} 43. Ke2
Qf4 44. Bc2 $19) 43. Kd4 Qxg4 44. c5 Qg1+ 45. Kc4 (45. Kc3 {doesn't get the
bull off the ice} Qxc5+ 46. Kd2 g4 47. Kd1 Qf2 48. Kc1 g3 49. e5 g2 50. Bc2
g1=Q+ 51. Kb2 Qd1 52. exd6 Qdxc2+ 53. Ka3 Qfc5#) 45... Qxc5+ 46. Kb3 g4 47. e5
(47. Bf1 {hardly improves anything} Qe3+ 48. Kc2 Qf2+ 49. Kd3 Qxf1+ 50. Kd2 g3
51. Kc2 Qc4+ 52. Kd2 g2 53. Ke3 g1=Q+ 54. Kf4 Qcf1#) 47... g3 48. e6 (48. exf6
{is not the saving move} exf6 49. h6 g2 50. Be2 g1=Q 51. Bf1 Qg3+ 52. Kb2 Qga3+
53. Kb1 Qcc1#) 48... g2 49. h6 (49. Ka4 {a fruitless try to alter the course
of the game} g1=Q 50. Bxh7+ Kxh7 51. Kb3 Qgf2 52. h6 Qfc2#) 49... g1=Q 50. Ka4
(50. Bf5 {is no salvation} Qd1+ 51. Ka2 Qa5+ 52. Kb2 Qaa1#) 50... Qa1+ 51. Kb3
Qaa3# 0-1

[Event "HokkaidoChessCh2023"]
[Site "?"]
[Date "2023.03.25"]
[Round "3.5"]
[White "Nishimori, Toshiyuki"]
[Black "Furuse, Mizuki"]
[Result "1-0"]
[ECO "B18"]
[WhiteElo "1585"]
[BlackElo "922"]
[Annotator "Fritz 11 SE (30s)"]
[PlyCount "129"]
[SourceDate "2023.03.26"]

{B18: Classical Caro-Kann: 4...Bf5 sidelines} 1. e4 c6 2. d4 d5 3. Nc3 dxe4 4.
Nxe4 Bf5 5. Nc5 e6 $146 (5... Qc8 6. Nf3 (6. Bd3 Bg4 7. Be2 Bxe2 8. Qxe2 Nf6 9.
Nf3 Nbd7 10. Nd3 e6 11. O-O Be7 12. c4 O-O 13. Bf4 a5 14. Rac1 Qd8 15. Rfd1 Qb6
16. h3 h6 17. Nde5 Rfd8 18. Rc3 Nxe5 19. Bxe5 Rd7 20. Rcd3 Qa6 {Motwani,P 
(2455)-Grant,J (2245) Scotland 1992 1-0 (32)}) 6... Nf6 (6... e6 7. Ne5 b6 8.
Ncd3 Nf6 9. g4 Be4 10. f3 Bxd3 11. Bxd3 Nbd7 12. Qe2 Nxe5 13. dxe5 Nd7 14. c3
Qc7 15. f4 Be7 16. h4 b5 17. Bd2 Rb8 18. g5 a5 19. h5 a4 20. Rd1 b4 21. c4 {
Peters,J (2430)-Lein,A (2505) Hastings 1978 0-1 (40)}) 7. c3 (7. Bd3 Bg4 8. h3
Bh5 9. Bf4 Nbd7 10. Nb3 e6 11. c3 Be7 12. Qe2 Nd5 13. Bh2 Qd8 14. c4 Nb4 15.
Bb1 b5 16. cxb5 cxb5 17. Qxb5 Bxf3 18. gxf3 O-O 19. Nc5 Nxc5 20. dxc5 Qd4 21.
c6 a6 {Ermenkov,E (2520)-Bagirov,V (2505) Titovo Uzice 1978 1/2-1/2 (43)}) 7...
Nbd7 8. Nxd7 Nxd7 9. Bc4 e6 10. O-O Bd6 11. Re1 Qc7 12. h3 O-O 13. Nh4 Bg6 14.
Nxg6 hxg6 15. Qg4 Nf6 16. Qf3 Nd5 17. Bb3 b5 18. Bd2 Be7 19. Re2 Bf6 20. g3 {
Barczay,L (2445)-Dely,P (2445) Kecskemet 1975 1/2-1/2 (38)}) (5... e5 6. Nxb7
Qb6 7. Nc5 exd4 8. Nb3 Bb4+ 9. Bd2 Bxd2+ 10. Qxd2 c5 11. c3 Nc6 12. Nf3 Nf6 13.
Qg5 Ne7 14. Bc4 Be6 15. Bxe6 Qxe6+ 16. Qe5 Qxe5+ 17. Nxe5 dxc3 18. bxc3 Ng6 19.
Nxg6 {1/2-1/2 (19) Smagin,S (2520)-Lobron,E (2545) Paris 1990}) (5... e5 6. Nb3
Nf6 7. dxe5 Qxd1+ 8. Kxd1 $11) 6. Nxb7 Qb6 7. Nc5 Bxc5 8. dxc5 Qxc5 9. c3 Nf6
10. Be3 Qe5 11. Nf3 {White threatens to win material: Nf3xe5} Qc7 12. Bd3 Bxd3
13. Qxd3 {Black king safety dropped} O-O {Black castles and improves king
safety} 14. O-O Nbd7 15. h3 {Prevents intrusion on g4} Rad8 16. Qc2 Ne5 (16...
e5 $5 $11 {should not be overlooked}) 17. Nxe5 $16 Qxe5 18. Bd4 (18. Bxa7 c5
19. b4 cxb4 20. cxb4 Rd7 $16) 18... Qe4 (18... Qc7 $5 $14) 19. Qxe4 $16 Nxe4
20. Rfe1 {White threatens to win material: Re1xe4} Nd6 $2 (20... c5 $142 $5 {
might be a viable alternative} 21. Rxe4 cxd4 22. cxd4 Rb8 $14) 21. Bxa7 $16 Rd7
(21... Rfe8 $16) 22. Bc5 $18 Rfd8 23. Rad1 Nf5 $2 (23... Ne8 24. Rxd7 Rxd7 $18)
24. Rxd7 Rxd7 25. Re2 (25. a4 $142 {keeps an even firmer grip} Ne7 $18) 25...
Rd5 26. Bb4 (26. b4 Rd3 27. c4 g5 $18) 26... c5 (26... Rd1+ 27. Kh2 Ra1 28. b3
$18) 27. Ba3 (27. c4 Rd1+ 28. Re1 Rxe1+ 29. Bxe1 Kf8 $18) 27... Nd6 $16 28. b3
c4 $2 (28... h6 $142 $16) 29. Bxd6 $18 Rxd6 30. bxc4 (30. b4 {and White can
already relax} Kf8 31. a4 Rd1+ 32. Kh2 Ra1 $18) 30... Rd3 $2 (30... Rd1+ $5 31.
Kh2 Rc1 $16) 31. Rb2 (31. Rc2 Rd1+ 32. Kh2 Kf8 $18) 31... h6 (31... Kf8 32. Rc2
Rd1+ 33. Kh2 $18) 32. Rb3 Rd6 (32... Kf8 33. c5 $18) 33. a4 (33. Rb8+ {might
be the shorter path} Kh7 $18) 33... Ra6 $2 (33... Rd1+ 34. Kh2 Ra1 35. Rb8+ Kh7
36. Rb4 $18) 34. Rb4 (34. Rb8+ {makes it even easier for White} Kh7 35. Rb4 Kg6
$18) 34... Rd6 (34... Kf8 {cannot change what is in store for White} 35. Kf1
$18) 35. a5 Rd1+ (35... Kf8 {doesn't do any good} 36. Kh2 $18) 36. Kh2 Ra1 37.
Rb5 (37. Rb8+ $142 {keeps an even firmer grip} Kh7 38. Ra8 $18) 37... Rc1 (
37... Kf8 {is the last straw} 38. c5 Ke7 $18) 38. a6 (38. c5 $142 {seems even
better} f5 39. Rb8+ Kf7 $18) 38... Ra1 39. Rb6 (39. Rb8+ $142 {ends the debate}
Kh7 40. Ra8 Kg6 $18) 39... Kf8 40. c5 (40. Rb8+ $142 {and White can already
relax} Ke7 41. Rb7+ Kd6 42. a7 $18) 40... Ke7 (40... Ke8 $18 {no good, but
what else?}) 41. Rb7+ Kf6 42. a7 Ke5 (42... e5 {is not much help} 43. c6 Ke6
44. Rxf7 Kxf7 45. c7 $18) 43. c6 (43. Rd7 $142 {and the result of the game is
clear: White will win} g5 $18) 43... Kd6 44. c7 Kd7 45. Rb8 Kxc7 46. a8=Q Rxa8
47. Rxa8 Kc6 (47... Kb6 {doesn't improve anything} 48. Kg3 $18) 48. Ra7 Kb6 (
48... f5 {doesn't change anything anymore} 49. Rxg7 Kd5 50. Rh7 $18) 49. Rxf7
Kc5 50. Rxg7 Kc4 51. Rg6 Kxc3 52. Rxe6 Kd4 (52... Kb3 {does not solve anything}
53. f4 Kc4 54. f5 Kd5 55. Re8 h5 56. f6 Kc5 57. f7 Kc4 58. f8=Q Kd4 59. Qf4+
Kc5 60. Re5+ Kc6 61. Qf6+ Kc7 62. Re7+ Kc8 63. Qf8#) 53. f4 Kd5 (53... Kc4 {
doesn't get the cat off the tree} 54. f5 h5 55. f6 Kd5 56. Re8 h4 57. f7 Kc5
58. f8=Q+ Kc6 59. Qf5 Kc7 60. Qf6 Kd7 61. Re7+ Kc8 62. Qf8#) 54. f5 h5 55. g4
hxg4 (55... h4 {doesn't improve anything} 56. g5 Kd4 57. g6 Kc5 58. g7 Kb4 59.
g8=Q Kc5 60. f6 Kb5 61. Qc8 Ka5 62. Qb7 Ka4 63. Ra6#) 56. hxg4 Kd4 (56... Kc4 {
does not win a prize} 57. g5 Kb5 58. g6 Kc4 59. g7 Kc5 60. g8=Q Kd4 61. Rd6+
Kc5 62. Qb8 Kc4 63. Qc7+ Kb3 64. Rb6+ Ka4 65. Qa7#) 57. g5 Kd5 (57... Kc4 {
doesn't change the outcome of the game} 58. g6 Kd4 59. g7 Kc5 60. g8=Q Kd4 61.
Rd6+ Kc3 62. Qc8+ Kb2 63. Rb6+ Ka3 64. Qa8#) 58. g6 Kd4 (58... Kc5 {does not
help much} 59. g7 Kc4 60. g8=Q Kd4 61. Rd6+ Ke5 62. Qg6 Ke4 63. Kg3 Ke5 64.
Qe6#) 59. g7 Kd5 (59... Kc5 {doesn't do any good} 60. g8=Q Kd4 61. Rd6+ Kc5 62.
Qb8 Kc4 63. Qc7+ Kb4 64. Rb6+ Ka4 65. Qa7#) 60. g8=Q Kd4 (60... Kc4 {cannot
change destiny} 61. Qc8+ Kd4 62. Qd7+ Kc4 63. Rc6+ Kb3 64. Qb7+ Ka4 65. Ra6#)
61. Qd8+ Kc5 62. Re1 Kb5 (62... Kc6 {cannot undo what has already been done}
63. Rc1+ Kb7 64. Qd6 Ka8 65. Rc7 Kb8 66. Qd8#) 63. Rc1 Kb4 (63... Ka4 {does
not improve anything} 64. Rb1 Ka3 65. Qa5#) 64. Qb8+ Ka5 (64... Ka4 {cannot
change what is in store for White} 65. Ra1#) 65. Ra1# 1-0

[Event "HokkaidoChessCh2023"]
[Site "?"]
[Date "2023.03.25"]
[Round "3.6"]
[White "Ito, Katsuhide"]
[Black "Matsumoto, Kenshin"]
[Result "0-1"]
[ECO "C15"]
[WhiteElo "1233"]
[BlackElo "1413"]
[Annotator "Fritz 11 SE (30s)"]
[PlyCount "72"]
[SourceDate "2023.03.26"]

{C15: French: 3 Nc3 Bb4: Unusual White 4th moves} 1. e4 e6 2. d4 d5 3. Nc3 Bb4
4. Bd2 Nf6 5. e5 Nfd7 (5... Bxc3 6. bxc3 Ne4 7. Qg4 Kf8 8. Bd3 Nxd2 9. Kxd2 c5
10. h4 c4 11. Be2 Nc6 12. Nh3 f5 13. Qf3 Qa5 14. Qe3 b5 15. a3 Ke8 16. Nf4 Rb8
17. Nh5 Rb7 18. g4 fxg4 19. Rhg1 Rf8 20. Rxg4 {Romero Holmes,A (2460)-Pomes
Marcet,J (2420) Terrassa 1990 0-1}) 6. Nf3 $146 (6. Qg4 g6 (6... Kf8 7. Nf3 a6
(7... c5 8. a3 Bxc3 9. Bxc3 Nc6 10. dxc5 Nxc5 11. Bd3 Nxd3+ 12. cxd3 Kg8 13. h4
h5 14. Qf4 Ne7 15. Rh3 Nf5 16. Nd4 Rh6 17. Nxf5 exf5 18. Rg3 Rg6 19. Rxg6 fxg6
20. Kf1 Be6 21. Qb4 b6 22. a4 {Nikac,P (2355)-Mehmeti,D (2419) Bar 2008 1/2-1/
2 (62)}) 8. Bd3 c5 9. dxc5 Bxc5 10. O-O-O Nc6 11. Qg3 Be7 12. Rhe1 Nc5 13. Bf1
Bd7 14. Kb1 Rc8 15. Qf4 b5 16. Be3 h6 17. h4 b4 18. Ne2 a5 19. g4 a4 20. g5 Ne4
21. Ng3 {Lacina,A (2197)-Matras,O (2224) Czechia 2014 1-0}) (6... Bf8 7. Nf3 c5
8. dxc5 Nc6 9. Nb5 Nxc5 10. Nd6+ Bxd6 11. Qxg7 Rf8 12. exd6 Qxd6 13. Bh6 Nd7
14. O-O-O Ne7 15. Qxh7 Rg8 16. g3 e5 17. Bb5 Qf6 18. Nxe5 Rh8 19. Ng4 Qxh6+ 20.
Qxh6 {1-0 (20) Kislinsky,A (2454)-Goncharov,O (2193) Kiev 2006}) 7. h4 h5 8.
Qg3 b6 9. Bd3 Nf8 10. Nf3 Qd7 11. Ng5 Ba6 12. Rh3 Bxd3 13. Qxd3 Nh7 14. O-O-O
Nc6 15. Rf3 Nxg5 16. Bxg5 Be7 17. Bf6 Bxf6 18. exf6 Na5 19. Re1 O-O-O 20. b3
Kb8 {Wadsack,W (2162)-Zetthofer,G (2258) Austria 2003 1/2-1/2}) (6. Qg4 $142 $5
O-O 7. Bh6 $16) 6... c5 $11 {Attacks the pawn chain} 7. a3 Bxc3 {Black forks:
b2+d4} 8. Bxc3 {White has the pair of bishops} Nc6 9. Bb5 cxd4 10. Bxd4 $4 {
releasing the pressure on the opponent} (10. Nxd4 $142 {was much better} Qb6
11. a4 $11) 10... Qa5+ $19 11. b4 Qxb5 12. c3 (12. Bc3 {hardly improves
anything} Qa4 $19) 12... Nxd4 13. Nxd4 (13. cxd4 {cannot undo what has already
been done} Nb6 $19) 13... Qc4 14. Ne2 (14. f4 {is not the saving move} f6 15.
Nxe6 Kf7 $19) 14... Nxe5 15. O-O Bd7 16. Qd4 Qxe2 17. Rae1 Nf3+ $1 {a
brilliant end} 18. gxf3 Qxf3 19. Re3 Qh5 20. Qxg7 Qg6+ 21. Rg3 (21. Qxg6 {
does not win a prize} hxg6 22. Kg2 Ke7 $19) 21... Qxg7 22. Rxg7 Kf8 23. Rg3 Rg8
24. Kh1 (24. Rxg8+ {doesn't change anything anymore} Kxg8 25. Re1 Kg7 $19)
24... Rxg3 25. fxg3 (25. hxg3 {does not save the day} Rc8 $19) 25... Rc8 26.
Rc1 (26. a4 {doesn't change the outcome of the game} Rxc3 27. Kg2 d4 $19) 26...
Bb5 (26... d4 {makes it even easier for Black} 27. Kg1 Rxc3 28. Rd1 $19) 27.
Kg2 (27. a4 {doesn't get the bull off the ice} Bd3 $19) 27... d4 $1 {
Deflection: c3} 28. c4 (28. cxd4 Rc4 {Decoy Double attack} (28... Rxc1 {
Deflection Pinning})) 28... Bxc4 29. Kf2 e5 30. Ke1 (30. Re1 {does not improve
anything} f6 31. Rc1 e4 $19) 30... d3 (30... Be6 $142 $5 {seems even better}
31. Rxc8+ Bxc8 32. a4 $19) 31. Kd2 e4 32. Ke3 f5 33. Kd4 (33. a4 {cannot
change destiny} Rd8 34. Rd1 Bb3 $19) 33... b5 (33... d2 34. Ra1 Rd8+ 35. Ke3
Rd3+ 36. Kf4 e3 37. Kf3 Rc3 38. Kf4 e2 39. Kg5 e1=Q 40. Kxf5 Be6+ 41. Kf6 Rf3+
42. Kg5 Qe5+ 43. Kh4 h6 44. Rc1 Qg5#) 34. Ra1 (34. Ke3 {is still a small chance
} Ke7 35. Rf1 $19) 34... Rd8+ 35. Kc3 e3 36. Rd1 (36. Rf1 {is no salvation} d2
37. Rxf5+ Kg7 38. Rg5+ Kf6 39. Kb2 d1=Q 40. Rf5+ Kxf5 41. g4+ Ke4 42. a4 Qb3+
43. Kc1 Rd1#) 36... e2 (36... e2 37. Rg1 d2 38. Kb2 d1=Q 39. Rxd1 exd1=Q 40. a4
Qb3+ 41. Kc1 Rd1#) 0-1

[Event "HokkaidoChessCh2023"]
[Site "?"]
[Date "2023.03.26"]
[Round "4.1"]
[White "Kawamura, Takuto"]
[Black "Sugimoto, Koichi"]
[Result "0-1"]
[ECO "D11"]
[WhiteElo "1554"]
[BlackElo "1959"]
[Annotator "Fritz 11 SE (30s)"]
[PlyCount "56"]
[SourceDate "2023.03.26"]

{D11: Slav Defence: 3 Nf3 sidelines and 3...Nf6 4 e3 Bg4} 1. d4 d5 2. c4 c6 3.
Nf3 Nf6 4. g3 Bf5 5. Bg2 e6 6. O-O Nbd7 7. Nbd2 h6 8. b3 Bd6 (8... Be7 9. Bb2
O-O 10. Rc1 Ne4 11. Ne1 Ndf6 12. Nb1 Bh7 13. Nd3 Nd7 14. f3 Nd6 15. Re1 Bg5 16.
e3 Nf5 17. Qd2 Re8 18. Rcd1 a5 19. Qf2 a4 20. e4 Nd6 21. cxd5 cxd5 22. Nc3 axb3
23. axb3 {Wanyama,H (2265)-El Gindy,E (2469) Kamwokya 2015 1-0 (46)}) 9. Bb2
Qb8 10. Qc1 O-O 11. Qc3 $146 (11. Ba3 Re8 12. Bxd6 Qxd6 13. Qb2 Ne4 14. Rfd1 a5
15. Rac1 Bh7 16. a3 Red8 17. Ne1 Nxd2 18. Rxd2 b5 19. Nd3 a4 20. c5 Qc7 21. b4
Bxd3 22. Rxd3 f5 23. f3 Nf6 24. Re1 f4 25. gxf4 Qxf4 {Wang,Y (2456)-Wang,H 
(2484) Jinan 2005 0-1 (48)}) 11... b5 12. c5 {White threatens to win material:
c5xd6} Bc7 13. b4 a5 {The typical lever} 14. Nb3 (14. a3 $142 $5 $15 {should
be considered}) 14... Ne4 $17 15. Qe1 axb4 16. Qxb4 Ra4 17. Qe1 Qa8 18. a3 Re8
19. Nh4 Bh7 20. Bh3 $2 (20. Nf3 $142 $17) 20... Rc4 $19 21. Rc1 Qa4 (21... b4
$142 $19 {might be the shorter path}) 22. Rxc4 $4 {the final mistake, not that
it matters anymore} (22. Nd2 Ba5 23. Nhf3 $19) 22... bxc4 (22... Qxc4 $6 23.
Na5 Qc2 24. Bc1 Bxa5 25. Qxa5 $19) (22... Qxb3 $6 {is a useless try} 23. Rb4
Qc2 24. Qd1 Qxd1 25. Rxd1 $11) 23. Nd2 Ba5 (23... c3 $142 {makes sure
everything is clear} 24. Nxe4 cxb2 25. Nc3 Qxd4 26. Nf3 Qxc5 27. Nb1 $19) 24.
Bc1 Ra8 (24... Ng5 {makes it even easier for Black} 25. Bg2 c3 26. e4 cxd2 27.
Bxd2 Bxd2 28. Qxd2 Nxe4 29. Qb4 $19) 25. Nhf3 (25. f4 {a fruitless try to
alter the course of the game} Rb8 $19) 25... c3 (25... Nc3 $5 {and Black can
already relax} 26. Bb2 Nb5 27. Qc1 $19) 26. Nxe4 Bxe4 27. Bg2 (27. Bf4 {
no good, but what else?} c2 28. Qa1 Bxf3 29. exf3 $19) 27... Rb8 28. Qd1 (28.
Kh1 {hoping against hope} Rb1 29. e3 $19) 28... c2 (28... c2 29. Qd3 Bxd3 30.
exd3 Bc3 $19) 0-1

[Event "HokkaidoChessCh2023"]
[Site "?"]
[Date "2023.03.26"]
[Round "4.2"]
[White "Akai, Kiyotaka"]
[Black "Takeuchi, Hiroshi"]
[Result "1-0"]
[ECO "E69"]
[WhiteElo "1705"]
[BlackElo "1418"]
[Annotator "Fritz 11 SE (30s)"]
[PlyCount "49"]
[SourceDate "2023.03.26"]

{E69: King's Indian: Fianchetto: 6...Nbd7 7 0-0 e5 8 e4 c6 9 h3} 1. d4 Nf6 2.
c4 d6 3. Nf3 g6 4. g3 Bg7 5. Bg2 O-O 6. Nc3 c6 7. O-O Nbd7 8. e4 e5 9. h3 exd4
10. Nxd4 Qc7 (10... Qa5 11. Nde2 Re8 12. Rb1 Qc7 13. Bf4 Ne5 14. b3 Nh5 15. Be3
f5 16. Nd4 fxe4 17. Nxe4 Nf7 18. g4 Nf6 19. Nxf6+ Bxf6 20. Qd2 Bd7 21. f4 c5
22. Nc2 Bc6 23. Kh1 Be4 24. Bg1 d5 25. cxd5 {Akopian,V (2600)-Bosboom,M (2445)
Tilburg 1992 1-0 (40)}) 11. b3 $146 (11. Re1 a5 12. Be3 Nc5 13. Qc2 Bd7 14.
Rad1 Rad8 15. b3 Rfe8 16. f4 Bc8 17. Bf2 Nfd7 18. a3 Na6 19. Kh2 Ndc5 20. Nde2
f5 21. Nd4 fxe4 22. Nxe4 Nxe4 23. Bxe4 Qf7 24. Nf3 Nc5 25. Ng5 Qf8 {Romanko,M 
(2226)-Huang,Q (2424) Sochi 2009 0-1 (46)}) (11. Be3 a5 12. Qd2 Re8 13. Rfe1
Nc5 14. Bh6 Bxh6 15. Qxh6 Nd3 16. Re2 Qb6 17. Qe3 Ne5 18. b3 Bxh3 19. Bxh3 Qxd4
20. Rd1 Qxe3 21. Rxe3 h5 22. Rxd6 Nfg4 23. Bxg4 hxg4 24. Kf1 Rad8 25. Rxd8 Rxd8
{Campbell,B (2220)-Balandin,A (2360) North Bay 1996 0-1 (58)}) 11... b6 $2 (
11... Nc5 12. Re1 $11) 12. Bb2 (12. Nxc6 $142 Qxc6 13. e5 $16) 12... Bb7 $11
13. Re1 {White has an active position} Rfe8 14. Qd2 c5 $4 (14... a5 $142 $11 {
had to be tried to avoid defeat}) 15. Ndb5 $18 Qb8 16. Nxd6 Re6 17. Nxb7 Qxb7 (
17... Ne5 {the last chance for counterplay} 18. f4 Qxb7 19. fxe5 Nd7 $18) 18.
e5 Qc7 (18... Qc8 {there is nothing else anyway} 19. exf6 Nxf6 20. Rxe6 fxe6
21. Bxa8 Qxa8 $18) 19. exf6 Rd8 20. Nd5 (20. fxg7 Qd6 21. Nd5 Rde8 22. Rxe6
Rxe6 $18) 20... Qb8 (20... Nxf6 {otherwise it's curtains at once} 21. Qc3 Rxd5
22. Bxd5 Re8 $18) 21. fxg7 Ne5 22. Bxe5 Rxe5 (22... Qc7 {does not solve
anything} 23. Bxc7 Rdd6 24. Bxd6 Re3 25. Rxe3 Kxg7 26. Qc3+ Kh6 27. Bf4+ g5 28.
Bf3 gxf4 29. Qf6#) 23. Rxe5 Qxe5 24. Re1 Qb8 25. Qc3 (25. Qc3 Rxd5 26. Bxd5 Qd8
27. Qf3 Qd7 28. Qf6 b5 29. Rd1 h6 30. Bxf7+ Qxf7 31. Rd8+ Qe8 32. Rxe8+ Kh7 33.
g8=Q#) 1-0

[Event "HokkaidoChessCh2023"]
[Site "?"]
[Date "2023.03.26"]
[Round "4.3"]
[White "Kanda, Daigo"]
[Black "Nishimori, Toshiyuki"]
[Result "1-0"]
[ECO "D00"]
[WhiteElo "1705"]
[BlackElo "1585"]
[Annotator "Fritz 11 SE (30s)"]
[PlyCount "65"]
[SourceDate "2023.03.26"]

{D00: 1 d4 d5: Unusual lines} 1. d4 Nf6 2. Nc3 d5 3. Bf4 e6 4. Nb5 Bd6 (4...
Na6 5. a3 Be7 6. e3 O-O 7. Nf3 b6 8. c4 Bb7 9. Qc2 c6 10. Nc3 c5 11. Rd1 cxd4
12. Nxd4 Nc5 13. Be2 Qc8 14. O-O dxc4 15. Bxc4 a6 16. Rc1 b5 17. Ba2 Qe8 18. f3
Rc8 19. e4 {Jobava,B (2664)-Swiercz,D (2617) Abu Dhabi 2015 1/2-1/2 (65)}) 5.
Nxd6+ cxd6 {White has the pair of bishops} 6. Nf3 $146 (6. e3 Nc6 7. c3 O-O 8.
Nf3 Qe7 9. Be2 h6 10. h3 e5 11. Bh2 Bf5 12. O-O a6 13. a4 Rac8 14. a5 Rfe8 15.
Qb3 e4 16. Nd2 Qd7 17. Kh1 Ne7 18. Qa3 Rcd8 19. c4 g5 20. cxd5 g4 {Fries
Nielsen,J (2387)-Lokander,M (2151) Stockholm 2012 1-0 (45)}) 6... Nc6 7. e3 O-O
8. h3 {Secures g4} h6 {Covers g5} 9. Be2 Re8 10. Bh2 e5 11. O-O (11. c3 $11)
11... e4 {Black threatens to win material: e4xf3} (11... Qb6 $142 $5 $15 {
looks like a viable alternative}) 12. Nd2 $14 Be6 13. c3 {Prevents intrusion
on b4} a6 {Consolidates b5} 14. Qb3 {White threatens to win material: Qb3xb7}
Qe7 15. a4 Red8 16. Rfc1 Rac8 17. a5 Na7 18. Qa3 Nb5 {Black threatens to win
material: Nb5xa3} 19. Qb4 Na7 20. c4 dxc4 21. Nxc4 {[%cal Rb4d6,Rc4d6,Rh2d6,
Gd8d6,Ge7d6] Increases the pressure on d6} Nd5 {The knight feels good on d5} (
21... Rc6 22. Nb6 $14) 22. Qd2 (22. Bxd6 $142 $5 Qd7 23. Qb3 $16) 22... Nb5 $14
23. Kh1 Rc6 24. f3 {Controls g4} (24. Nb6 Qc7 $14) 24... f5 (24... exf3 25.
Bxf3 Rdc8 $11) 25. g4 (25. fxe4 $5 fxe4 26. Nb6 $14) 25... Kh8 (25... exf3 26.
Bxf3 fxg4 27. hxg4 $17) 26. fxe4 fxe4 (26... fxg4 27. hxg4 (27. exd5 Bxd5+ 28.
Kg1 Qe4 29. Bxg4 Qh1+ (29... Bxc4 $6 {is impossible} 30. Bf4 $15) 30. Kf2 Qxh2+
31. Ke1 Qg1+ 32. Ke2 Bxc4+ 33. Rxc4 Qxa1 $19) 27... Nf6 28. e5 Bd5+ 29. Kg1 $15
) 27. Bf1 (27. Nb6 Qc7 $14) 27... Bf7 (27... Rdc8 28. Nb6 Nxb6 29. axb6 $11)
28. Bg3 (28. Nb6 Be6 $11) 28... g5 {Black king safety dropped} (28... Rdc8 29.
Kg1 $11) 29. Qf2 (29. Nb6 Rxc1 30. Rxc1 Nbc7 $14) 29... Bg6 (29... Nb4 30. Nb6
Nd3 31. Bxd3 exd3 32. Rxc6 bxc6 33. Qf5 $15) 30. Qd2 Rf8 (30... Bf7 31. Nb6 $14
) 31. Bg2 (31. Nb6 $5 Rxc1 32. Rxc1 Nxb6 33. axb6 $14) 31... Qe6 32. Nb6 Qe8 $4
(32... Rxc1+ $142 {is just about the only chance} 33. Rxc1 Nxb6 34. axb6 h5 35.
gxh5 Bxh5 $11) 33. Nxd5 $18 1-0

[Event "HokkaidoChessCh2023"]
[Site "?"]
[Date "2023.03.26"]
[Round "4.4"]
[White "Yoshii, Yukihiko"]
[Black "Kihara, Kotaro"]
[Result "0-1"]
[ECO "D85"]
[WhiteElo "1699"]
[BlackElo "1351"]
[Annotator "Fritz 11 SE (30s)"]
[PlyCount "68"]
[SourceDate "2023.03.26"]

{D85: Exchange Gr・feld: Unusual White 7th moves and lines with 7 Nf3} 1. c4
Nf6 2. Nc3 d5 3. cxd5 Nxd5 4. e4 Nxc3 5. bxc3 g6 6. d4 Bg7 7. Nf3 Bg4 8. Be2 c5
9. Be3 Nc6 10. e5 Qa5 {Black threatens to win material: Qa5xc3} (10... cxd4 11.
cxd4 O-O (11... Qa5+ 12. Bd2 Qa3 13. Bc1 Qa5+ 14. Bd2 Qd5 15. Bc3 Rc8 16. O-O
O-O 17. h3 Be6 18. Qd2 Rfd8 19. Rfd1 h6 20. Nh2 Qd7 21. Ng4 h5 22. Ne3 Bh6 23.
d5 Bxe3 24. Qxe3 Bxd5 25. Bxh5 Qe8 26. Bxg6 {David,R (2227)-Bednar,M (2287)
Germany 2014 0-1 (41)}) 12. O-O Qd7 13. Qd2 Rfd8 14. Rfd1 Rac8 15. Rac1 b6 16.
h3 Be6 17. Ba6 Rc7 18. Ng5 Bd5 19. Bf4 e6 20. Qc3 h6 21. Nf3 Qe7 22. Nh2 Rdd7
23. Qd2 Qb4 24. Qe3 h5 25. g4 {Langeweg,K (2455)-Timman,J (2620) Wijk aan Zee
1981 0-1 (37)}) 11. Qd2 $146 (11. O-O O-O (11... Qxc3 12. Rc1 Qa3 13. Rxc5 O-O
14. Qb1 Be6 15. Qxb7 Qxa2 16. Re1 Bd5 17. Rxc6 a5 18. Rc2 Qxc2 19. Qxd5 e6 20.
Qc5 Qb2 21. Bc1 Qb8 22. Nd2 Rc8 23. Qa3 Bf8 24. Qa2 Qb4 25. Rd1 Rab8 26. Kf1 {
Browne,W (2550)-Hoelzl,F (2410) Buenos Aires 1978 0-1 (63)}) 12. Qb3 (12. h3
cxd4 13. cxd4 Be6 14. Ng5 Bd5 15. h4 Rac8 16. h5 Nb4 17. hxg6 hxg6 18. Bd2 Qa3
19. Bxb4 Qxb4 20. Bf3 Bc4 21. Rb1 Qa5 22. Bxb7 Bxf1 23. Bxc8 Rxc8 24. Qxf1 Bh6
25. Nf3 Qxa2 26. Rc1 e6 {Fiorito,F (2455)-Alonso,S (2390) Buenos Aires 1998 1/
2-1/2 (37)}) 12... Rad8 13. Rfd1 cxd4 14. cxd4 Qb4 15. Rab1 Qxb3 16. Rxb3 Rd7
17. h3 Be6 18. Rb2 Rfd8 19. Rbd2 Nb4 20. Ng5 Bxa2 21. Rb2 a5 22. Ra1 h6 23. Nf3
Bd5 24. Rxa5 Nc6 25. Rxd5 Rxd5 {Matejka,P (2151)-Pokrupa,M (2199) Czechia 2011
0-1 (40)}) (11. O-O Rd8 $11) 11... Bxf3 12. Bxf3 {White has the pair of bishops
} Rd8 13. Bxc6+ bxc6 14. Rd1 (14. f4 f6 15. exf6 Bxf6 $11) 14... Bxe5 $1 $17 {
Deflection: d4} 15. O-O (15. dxe5 Rd5 {Decoy Double attack} (15... Rxd2 {
Deflection Pinning})) 15... O-O 16. Qc2 Bg7 17. Rd3 Rd7 18. Rfd1 (18. dxc5 Rxd3
19. Qxd3 Qxa2 $15 (19... Qxc3 $143 20. Qd7 $11)) 18... Rfd8 (18... c4 19. R3d2
$17) 19. g3 (19. dxc5 Rxd3 20. Rxd3 Rxd3 21. Qxd3 Bxc3 $17 (21... Qxc3 $143 22.
Qd8+ Bf8 23. g3 $11) (21... Qxa2 $143 22. Qd8+ Bf8 23. h3 $11)) 19... c4 20.
R3d2 Re8 (20... a6 21. Qe4 $17) 21. Rc1 (21. Rb1 Bf6 $15) 21... Rb7 22. Bf4 e5
(22... g5 $5 23. Be3 Qd5 $17) 23. dxe5 $15 Bxe5 24. Qe4 {White threatens to
win material: Qe4xc6. White forks: c6+c4} Qb5 25. Bxe5 Rxe5 26. Rd8+ Kg7 27.
Qd4 Qc5 28. Rd1 (28. Rc2 Rb1+ 29. Kg2 a6 $15) 28... Rbe7 (28... Rb2 $5 $17) 29.
Kg2 Qxd4 30. R1xd4 Rc5 31. Rb8 Re2 32. a4 Rc2 {Black threatens to win material:
Rc2xc3} 33. Rb7 (33. Rf4 g5 34. Rf3 g4 $15) 33... a5 (33... Rf5 $142 $5 34. Rf4
Rxf4 35. gxf4 Rxc3 36. Rxa7 Ra3 $15) 34. Rdd7 $4 (34. Rf4 $142 {would hold out}
Rf5 35. Rxf5 gxf5 36. Ra7 $11) 34... Rf5 $19 (34... Rf5 35. g4 Rfxf2+ 36. Kg3
Rf6 $19) 0-1

[Event "HokkaidoChessCh2023"]
[Site "?"]
[Date "2023.03.26"]
[Round "4.5"]
[White "Matsumoto, Kenshin"]
[Black "Furuse, Mizuki"]
[Result "1-0"]
[ECO "D20"]
[WhiteElo "1413"]
[BlackElo "922"]
[Annotator "Fritz 11 SE (30s)"]
[PlyCount "39"]
[SourceDate "2023.03.26"]

{D20: Queen's Gambit Accepted: 3 e3 and 3 e4} 1. d4 d5 2. c4 dxc4 3. e3 e6 4.
Bxc4 c5 5. d5 (5. Nf3 a6 6. Qe2 b5 7. Bb3 Nf6 8. dxc5 Bb7 9. a4 Nbd7 10. axb5
axb5 11. Rxa8 Qxa8 12. Qxb5 Bxf3 13. gxf3 Bxc5 14. Nd2 O-O 15. Bc4 Qa7 16. O-O
Rb8 17. Qa6 Qc7 18. Rd1 Bb4 19. Bf1 Bxd2 {Graf,A (2623)-Izoria,Z (2556) Batumi
2002 1/2-1/2}) 5... Nf6 $146 {Black threatens to win material: Nf6xd5} (5...
exd5 6. Bxd5 Bd6 7. e4 (7. Nc3 Nf6 8. Bf3 O-O 9. Nge2 Qe7 10. Ng3 Rd8 11. Qc2
Na6 12. a3 c4 13. Be2 Be6 14. Nf5 Bxf5 15. Qxf5 Rac8 16. Bd2 g6 17. Qc2 Nc5 18.
Rd1 Nd3+ 19. Bxd3 cxd3 20. Qxd3 Bxa3 21. Qc2 Bd6 {Sargissian,G (2470)-Sorokin,
M (2574) Linares 2000 1/2-1/2}) 7... Ne7 8. Bc4 O-O 9. Nc3 Nbc6 10. Be3 a6 11.
a4 Ne5 12. Be2 Be6 13. f4 Nc4 14. Bxc4 Bxc4 15. b3 Be6 16. f5 Be5 17. Nge2
Qxd1+ 18. Rxd1 Bxb3 19. Rd7 Nc6 20. Bxc5 {Krasenkow,M (2628)-Yakovich,Y (2517)
Warsaw 2012 1/2-1/2}) 6. Nc3 Be7 (6... exd5 7. Nxd5 Be6 8. Nxf6+ Qxf6 9. Bxe6
Qxe6 10. Qb3 $11) 7. Nf3 O-O 8. O-O exd5 9. Nxd5 Nxd5 10. Bxd5 Qc7 11. Qc2 Nc6
12. Bd2 Bd7 {Black has an active position} 13. Rfd1 Rfd8 (13... Rad8 14. Bc3
$14) 14. Qc4 Be6 $2 (14... b5 $142 $5 15. Qe4 Rac8 $14) 15. Bxe6 $18 fxe6 16.
Qxe6+ Kf8 17. Bc3 Re8 $4 {leading to a quick end} (17... Rxd1+ $142 18. Rxd1
Rd8 19. Rxd8+ Qxd8 $18) 18. Rd7 Qc8 (18... Qxd7 {what else?} 19. Qxd7 Rad8 20.
Qxb7 Rd6 $18) 19. Ng5 $3 {Deflection: e7} Nd8 (19... Bxg5 20. Qf7# {Mate
attack Deflection Pinning}) 20. Nxh7# 1-0

[Event "HokkaidoChessCh2023"]
[Site "?"]
[Date "2023.03.26"]
[Round "4.6"]
[White "Al Jbarat, Thamer"]
[Black "Nakamura, Mitsuru"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "1309"]
[BlackElo "1413"]
[Annotator "Fritz 11 SE (30s)"]
[PlyCount "174"]
[SourceDate "2023.03.26"]

{D00: 1 d4 d5: Unusual lines} 1. d4 d5 2. e3 Nf6 3. Nc3 $146 (3. c3 Nbd7 (3...
g6 4. Bd3 (4. Be2 Bg7 5. h4 Nc6 6. Nd2 a6 7. b3 h5 8. Nh3 Bg4 9. Ng5 Bxe2 10.
Qxe2 Qd7 11. O-O Qg4 12. Qxg4 hxg4 13. g3 e5 14. Ba3 Bh6 15. f4 gxf3 16. Ndxf3
e4 17. Nh2 Bxg5 18. hxg5 Rxh2 {Depasquale,C (2300)-Garbett,P (2230) Sydney
1989 1-0}) 4... Bg7 5. h4 (5. Nd2 Nbd7 6. f4 c5 7. Ngf3 O-O 8. O-O b6 9. Qe1 a5
10. Ne5 Ba6 11. Bxa6 Rxa6 12. Qh4 b5 13. Rf3 Qc7 14. Rh3 b4 15. Nf1 Rb8 16. Bd2
Nf8 17. c4 dxc4 18. Rc1 c3 19. bxc3 b3 {Chelushkina,I (2265)-Todorovic,G (2488)
Belgrade 2013 1-0}) 5... Nbd7 6. Nf3 c5 7. Nbd2 Qc7 8. Qe2 O-O 9. b3 e5 10.
Nxe5 Nxe5 11. dxe5 Qxe5 12. Bb2 Bg4 13. f3 Rfe8 14. O-O-O Qxe3 15. Qxe3 Rxe3
16. Nf1 Rxd3 17. Rxd3 Bh6+ 18. Rd2 {Onkoud,A (2361)-Libiszewski,F (2413)
Chartres 2005 0-1 (56)}) 4. f4 Ne4 5. Nf3 e6 6. Bd3 Ndf6 7. O-O Be7 8. Na3 O-O
9. Nc2 c5 10. Nce1 c4 11. Bc2 b5 12. Ng5 Nxg5 13. fxg5 Ne4 14. Bxe4 dxe4 15. h4
Qc7 16. Qg4 Qc6 17. Nc2 a5 {Bird,H-Blackburne,J Belfast 1892 1/2-1/2 (42)}) (3.
Ne2 Bf5 4. Ng3 Bg6 5. h4 h6 6. Bd3 Bxd3 7. Qxd3 Nbd7 8. Nc3 c6 9. e4 e5 10.
exd5 exd4 11. dxc6 bxc6 12. Qxd4 Bc5 13. Qc4 O-O 14. Kf1 Rb8 15. a3 Re8 16. Bf4
Bxf2 17. Bxb8 Qxb8 {Nemety,L (2235)-Lamoureux,C (2430) Paris 1994 0-1}) 3... e6
4. Bd3 c6 {Secures b5} (4... c5 5. Nf3 $11) 5. Nf3 $14 Nbd7 6. O-O Bd6 7. Bd2 (
7. Re1 O-O $14) 7... O-O 8. h3 {Controls g4} (8. e4 e5 9. exd5 cxd5 10. Nxe5
Nxe5 11. dxe5 Bxe5 $11) 8... h6 {Prevents intrusion on g5} (8... e5 9. dxe5
Nxe5 10. e4 $11) 9. Qe2 (9. e4 dxe4 10. Nxe4 Nxe4 11. Bxe4 Qc7 $14) 9... Qc7 (
9... e5 10. dxe5 Nxe5 11. Nxe5 Bxe5 $11) 10. Ne1 (10. e4 $5 {is worth looking
at} e5 11. exd5 exd4 12. Nxd4 $16) 10... b6 (10... e5 11. dxe5 Nxe5 12. Nf3
Nxd3 13. cxd3 $17) 11. a3 {Covers b4} (11. f4 Bb7 $11) 11... Bb7 (11... e5 12.
dxe5 Nxe5 13. Nf3 Nxd3 14. cxd3 $17) 12. b4 (12. f4 Rfe8 $15) 12... a6 $17 13.
f4 (13. e4 e5 14. dxe5 Bxe5 $17) 13... Rfe8 (13... c5 14. dxc5 bxc5 15. Qd1 $17
) 14. Nd1 (14. e4 $142 $5 {has some apparent merit} dxe4 15. Bxe4 $15) 14... c5
$17 15. Nf3 $2 (15. dxc5 bxc5 16. bxc5 Bxc5 $17 (16... Qxc5 $6 17. Bb4 Qb6 18.
Bxd6 Qxd6 19. Nf3 $17)) 15... cxd4 (15... c4 $142 $19 {secures the win}) 16.
Nxd4 $17 e5 17. fxe5 Bxe5 (17... Nxe5 $6 18. Rxf6 gxf6 19. Qh5 $11) 18. c3 Ne4
19. Bxe4 dxe4 20. Qh5 (20. Nb2 Rad8 $17) 20... Nf6 21. Qe2 Bd5 (21... Rad8 22.
Nb2 $17) 22. Nb2 b5 23. Rac1 Qb6 (23... Rac8 $5 $17) 24. c4 $15 bxc4 (24...
Bxd4 $5 25. exd4 bxc4 (25... Qxd4+ $143 26. Be3 Qe5 27. cxd5 $16) 26. Nxc4
Qxd4+ 27. Qe3 Qd3 $15) 25. Nxc4 $11 Bxc4 26. Rxc4 ({Weaker is} 26. Qxc4 Rad8
$17) 26... Rac8 27. Rfc1 Rxc4 28. Qxc4 Bxd4 29. Qxd4 Qxd4 30. exd4 {White has
a new passed pawn: d4. Black has a new passed pawn: e4} e3 {Black threatens to
win material: e3xd2} 31. Be1 e2 (31... Re6 32. g3 $11) 32. Rc6 {White
threatens to win material: Rc6xa6} Ra8 $2 (32... Nd5 $142 $11 {would keep
Black in the game}) 33. Kf2 $16 a5 $2 (33... Re8 34. Rxa6 Ne4+ 35. Kf3 (35.
Kxe2 $2 {doesn't work because of} Nc5+ 36. Kf1 Nxa6 $19) 35... Ng5+ 36. Kg3 $16
) 34. Kxe2 (34. bxa5 $142 {finishes off the opponent} Kf8 35. Kxe2 Re8+ 36. Kd2
$18) 34... axb4 35. Bxb4 Nd5 36. Bc5 (36. Rc5 $142 $5 Nf4+ 37. Kf3 $18) 36...
Nf4+ $14 {Black forks: g2} 37. Kf3 {White threatens to win material: Kf3xf4}
Nd3 $2 (37... Ne6 $142 $14 {is the best option Black has}) 38. Bd6 $18 Ra4 $2 (
38... f6 39. Ke2 Nb2 40. Kd2 $18) 39. Ke4 (39. Ke2 {keeps an even firmer grip}
Nb2 40. Rc8+ Kh7 $18) 39... Ne1 $2 (39... Nf2+ 40. Kf4 $18) 40. g3 (40. Rc8+
$142 {seems even better} Kh7 41. Bb4 f5+ 42. Kxf5 Nxg2 $18) 40... Ra5 (40...
Kh7 $18 {there is nothing better in the position}) 41. Rc8+ Kh7 42. Bc5 (42.
Bb4 $142 {it becomes clear that White will call all the shots} Ra7 43. Ke3 $18)
42... Nc2 43. d5 Ra4+ 44. Kd3 Nxa3 45. d6 Nc4 46. d7 $4 {throws away the game}
(46. Re8 $142 {and the rest is a matter of technique} Nxd6 47. Bxd6 $18) 46...
Ne5+ $15 {Black forks: d7} 47. Ke3 Nxd7 48. Bd6 Nf6 49. Rc1 Re4+ 50. Kf3 Rd4 {
Black threatens to win material: Rd4xd6} 51. Be5 Rd3+ 52. Ke2 {White threatens
to win material: Ke2xd3} Rd5 53. Ba1 (53. Bxf6 gxf6 54. Rc7 Kg6 $11) 53... Nh5
$15 {Black threatens to win material: Nh5xg3} 54. Rc3 $2 (54. Rg1 $142 $5 $15 {
would keep White alive}) 54... Ra5 $19 55. Bb2 Ra2 56. Rb3 Nxg3+ $1 {
Deflection: b2} 57. Kf3 (57. Rxg3 Rxb2+ {Overloading Deflection}) 57... Nf1 (
57... Nf5 $142 $19 {would have given Black the upper hand}) 58. Ke2 $15 {
White threatens to win material: Ke2xf1} Ng3+ {Twofold repetition. Deflection:
b2} 59. Kf3 (59. Rxg3 Rxb2+ {Deflection}) 59... Nf5 60. Kf4 Nd6 61. Be5 $2 (61.
Bc3 f6 62. Kf3 Ra4 $19) 61... Ra4+ (61... g5+ $5 {makes it even easier for
Black} 62. Kg4 f5+ 63. Kf3 $19) 62. Kf3 Nc4 63. Bc3 Nd6 64. Be5 Nf5 65. Bb2 (
65. Kg2 Re4 66. Ba1 g5 $19) 65... g5 (65... Nd4+ $142 {seems even better} 66.
Bxd4 Rxd4 $19) 66. Bf6 $4 {an oversight. But White was lost anyway.} (66. Kf2
$142 $19) 66... Rf4+ 67. Ke2 Nd4+ 68. Bxd4 Rxd4 69. Rf3 Kg6 70. Ke3 (70. Ra3
$19 {is the last straw}) 70... Ra4 71. Kd2 (71. Ke2 {a fruitless try to alter
the course of the game} Ra2+ 72. Kf1 f5 $19) 71... Ra2+ 72. Ke1 f5 73. Rb3 (73.
Kf1 $19 {a last effort to resist the inevitable}) 73... f4 74. Kf1 Kh5 75. Rc3
(75. Kg1 {doesn't improve anything} Rc2 $19) 75... Kh4 76. Kg1 g4 (76... Re2
77. Kf1 Rh2 78. Kg1 Rxh3 79. Rc6 $19) 77. hxg4 Kxg4 78. Rc6 h5 79. Rg6+ Kf5 80.
Rb6 f3 (80... h4 $142 $19 {secures the point}) 81. Rb5+ Kg4 82. Rb4+ $4 {
White crumbles in face of a dire situation} (82. Rb7 $19) 82... Kg3 {[%cal
Yf3f2] Black prepares f2} 83. Rb1 Rg2+ 84. Kh1 (84. Kf1 {does not help much}
Rh2 85. Ke1 Rh1+ 86. Kd2 Rxb1 87. Kd3 f2 88. Kd4 f1=Q 89. Kd5 Qd3+ 90. Ke5 Re1+
91. Kf6 Qh7 92. Kg5 Qg7+ 93. Kxh5 Rh1#) 84... Rh2+ 85. Kg1 f2+ 86. Kf1 Rh1+ 87.
Ke2 Rxb1 (87... Rxb1 88. Kd3 f1=Q+ 89. Kd4 Qf4+ 90. Kd5 Rb6 91. Kc5 Qb4+ 92.
Kd5 Rd6+ 93. Ke5 Qf4#) 0-1

[Event "HokkaidoChessCh2023"]
[Site "?"]
[Date "2023.03.26"]
[Round "5.1"]
[White "Kanda, Daido"]
[Black "Kawamura, Takuto"]
[Result "1/2-1/2"]
[ECO "D00"]
[WhiteElo "1705"]
[BlackElo "1554"]
[Annotator "Fritz 11 SE (30s)"]
[PlyCount "101"]
[SourceDate "2023.03.26"]

{D00: 1 d4 d5: Unusual lines} 1. d4 Nf6 2. Nc3 d5 3. Bf4 e6 4. Nb5 Na6 5. e3 c6
6. Nc3 Bd6 $146 (6... b6 7. Nf3 Bb7 (7... Nc7 8. Ne5 Bb7 9. Bd3 Be7 10. Qf3 O-O
11. g4 Bb4 12. Qh3 g6 13. Bh6 c5 14. f3 c4 15. Be2 Nb5 16. Kd2 Qe7 17. a3 Nxc3
18. bxc3 Bxa3 19. Bg5 Bd6 20. Qh4 Ne4+ 21. fxe4 f6 22. Bh6 {Ehlvest,J (2565)
-Sveshnikov,E (2528) Jurmala 2014 1-0}) 8. a3 Be7 9. Bd3 O-O 10. O-O Nc7 11.
Nb1 c5 12. c3 Nce8 13. Nbd2 Nd6 14. h3 a5 15. Qe2 Nde4 16. Rfd1 Qc8 17. Rac1
Nxd2 18. Nxd2 Ba6 19. c4 Qb7 20. Be5 Nd7 21. Qh5 {Hobber,A (2339)-Mareco,S 
(2605) Lidkoping 2015 0-1 (34)}) (6... Nb8 7. Bd3 Nbd7 8. Qf3 Qa5 9. a3 b5 10.
Ra2 Bb7 11. Nge2 Be7 12. O-O O-O 13. g4 Qd8 14. Qh3 g6 15. Bh6 Re8 16. f4 Bf8
17. Bxf8 Nxf8 18. Qh4 N8d7 19. Raa1 a6 20. Ng3 c5 21. g5 {Bank,P (2296)
-Meskovs,N (2454) Aarhus 2015 0-1 (67)}) (6... Nc7 7. Bd3 Bd6 8. Nf3 Bxf4 9.
exf4 Qd6 10. Qd2 c5 11. dxc5 Qxc5 12. O-O-O b5 13. Kb1 Bb7 14. Ne5 Rd8 15. f3
Nd7 16. Nxd7 Kxd7 17. f5 e5 18. Qg5 b4 19. Ne2 Kc8 20. Ng3 Ne8 21. Rc1 {
Pasiev,R (2400)-Dvalishvili,P (2439) Moscow 2015 0-1 (48)}) (6... Bb4 7. Bxa6
bxa6 8. Nf3 $11) 7. Nf3 $14 O-O 8. Ne5 Qc7 9. Bxa6 bxa6 {Black has the pair of
bishops} 10. O-O Bb7 (10... c5 11. Qf3 $15) 11. Na4 c5 12. Nxc5 Bxc5 13. dxc5
Qxc5 14. c3 h6 {Consolidates g5} 15. h3 {Secures g4} Rad8 16. Rc1 Ne4 17. Qc2 (
17. Qg4 Nf6 18. Qe2 Qb5 19. Qxb5 axb5 $11) 17... Nd6 (17... f6 $5 {should be
examined more closely} 18. Nd3 Qb6 $15) 18. b3 {Prevents intrusion on c4} a5
19. Rfd1 Ba6 (19... f6 20. Ng6 Rf7 21. Bxd6 Rxd6 22. Qb1 $11) 20. Qb2 (20. c4
dxc4 21. bxc4 f6 $16) 20... Qb5 (20... Rfe8 21. Nd3 Qb6 22. Qa3 $11) 21. Qc2
Qb6 $4 {throwing away the advantage} (21... Qc5 $142 $11 {and Black could well
hope to play on}) 22. c4 $18 dxc4 23. bxc4 Qc5 24. Qa4 Qb4 $2 (24... Nxc4 $142
25. Nd7 Rxd7 26. Qxd7 e5 $18) 25. Qxb4 axb4 26. c5 (26. Nc6 $142 {and White
wins} Nb7 27. Nxd8 Nxd8 28. Bd6 $18) 26... Ne4 $14 27. Nd7 {White threatens to
win material: Nd7xf8} (27. Rxd8 $142 $5 {is worthy of consideration} Rxd8 28.
Nc6 $16) 27... Nc3 $11 {Black threatens to win material: Nc3xd1. Black forks:
a2+d1} 28. Nxf8 $2 (28. c6 Ne2+ 29. Kh2 Nxc1 30. Rxc1 Rfe8 $15) 28... Rxd1+ $4
{there were better ways to keep up the pressure} (28... Nxd1 $142 29. Rb1 Nc3 (
29... Rxf8 $6 30. Rxd1 Rc8 31. Rd7 $11) 30. Nxe6 fxe6 31. Rxb4 Ne2+ (31... Nxa2
{is much weaker} 32. Ra4 $16) 32. Kh2 Nxf4 33. exf4 Rd2 $19) 29. Rxd1 $11 Nxd1
{A minor pieces endgame occured} 30. Nd7 Nc3 {Black can be proud of that piece}
31. c6 {Black has to watch this pawn} f6 {Consolidates e5} 32. Nc5 {White
threatens to win material: Nc5xa6. White forks: a6+e6} Bc8 33. Nb3 $4 {gives
the opponent new chances} (33. Bb8 $142 $11 {and White has air to breath})
33... e5 $19 34. Bg3 Nxa2 35. f3 (35. f4 e4 $19) 35... Kf7 36. e4 (36. f4 Nc3
37. fxe5 Ne2+ 38. Kf2 Nxg3 39. Kxg3 fxe5 $19) 36... Ke7 (36... Ke6 {might be
the shorter path} 37. Bf2 Kd6 38. Bc5+ Kxc6 39. Bf8 $19) 37. Bf2 (37. f4 Nc3
38. fxe5 Ne2+ (38... Nxe4 $6 {is much worse} 39. Be1 $17) 39. Kf2 Nxg3 40.
exf6+ gxf6 41. Kxg3 Kd6 $19) 37... Kd6 38. Na5 (38. Bxa7 Kxc6 39. Kf2 Be6 $19)
38... Be6 39. Bxa7 Kc7 (39... Nc1 $142 $19 {and Black has reached his goal})
40. Bc5 $17 b3 41. Nxb3 Bxb3 {Black wins a piece} 42. Bf8 g6 43. Bg7 (43. Bxh6
Kxc6 44. Bg7 Nb4 $17) 43... f5 (43... Nb4 $142 $19 {Black would have gained
the upper hand}) 44. Bxe5+ $15 Kxc6 45. exf5 gxf5 46. Kf2 Kd5 {Black threatens
to win material: Kd5xe5} (46... Nb4 47. Kg3 $17) 47. Bg7 h5 48. Kg3 Ke6 49. Kf4
$2 (49. Kh4 $142 $5 $11 {is an interesting alternative}) 49... Kf7 $17 50. Bd4
(50. Be5 Kg6 $17) 50... Kg6 51. g4 1/2-1/2

[Event "HokkaidoChessCh2023"]
[Site "?"]
[Date "2023.03.26"]
[Round "5.2"]
[White "Matsumoto, Kenshin"]
[Black "Akai, Kiyotaka"]
[Result "0-1"]
[ECO "D32"]
[WhiteElo "1413"]
[BlackElo "1705"]
[Annotator "Fritz 11 SE (30s)"]
[PlyCount "58"]
[SourceDate "2023.03.26"]

{D32: Tarrasch Defence: Sidelines and lines without g3} 1. d4 d5 2. c4 e6 3.
Nc3 c5 4. cxd5 exd5 5. Nf3 Nc6 6. e3 Nf6 7. dxc5 Bxc5 8. a3 (8. Be2 O-O 9. O-O
Bg4 10. h3 Be6 11. b3 Qe7 12. Bb2 a6 13. Rc1 Ba7 14. Bd3 Rfd8 15. Ne2 Ne4 16.
Ned4 Nb4 17. Bb1 Rac8 18. Nxe6 Rxc1 19. Qxc1 fxe6 20. a3 Nc6 21. Bxe4 dxe4 22.
Nd2 Rd3 {Smyslov,V (2520)-Yudasin,L (2605) Biel 1993 1/2-1/2}) 8... a5 $146 {
Black has a very active position} (8... O-O 9. Be2 a6 10. b4 d4 11. exd4 Bxd4
12. Nxd4 Nxd4 13. O-O Bf5 14. Bg5 Nxe2+ 15. Nxe2 Qxd1 16. Rfxd1 Ne4 17. Be3
Rfd8 18. f3 Nf6 19. Bb6 Rxd1+ 20. Rxd1 Rc8 21. Nd4 Bd7 22. Bc5 h6 23. Kf2 {
Grycel,K (2290)-Markiewicz,J (2241) Ustron 2003 1/2-1/2}) (8... a6 9. h3 O-O
10. Ne2 Ne4 11. b4 Ba7 12. Bb2 Qe7 13. Qb3 a5 14. b5 a4 15. Qc2 Na5 16. Ned4
Bd7 17. Qxa4 Nc4 18. Qb3 Bc5 19. Bxc4 dxc4 20. Qxc4 Rfc8 21. O-O Bxa3 22. Bxa3
Rxa3 23. Qd5 {Guseva,M (2195)-Burtasova,A (2160) Peniscola 2002 1-0 (34)}) 9.
Bd3 O-O 10. O-O Re8 11. Qc2 (11. h3 Ne5 $11) 11... Bf8 (11... Bg4 $5 $15) 12.
Rd1 Bg4 {Black has an active position} 13. Be2 Rc8 14. Qb3 {[%cal Rb3d5,Rc3d5,
Rd1d5,Gd8d5,Gf6d5] Increasing the pressure on the isolated pawn on d5. White
threatens to win material: Qb3xb7} Qe7 15. Nxd5 Nxd5 16. Qxd5 Rcd8 {Black
threatens to win material: Rd8xd5} (16... Ne5 17. Qxa5 Bxf3 18. Bxf3 Nxf3+ 19.
gxf3 $11) 17. Qb3 (17. Qb5 Rxd1+ 18. Bxd1 Qd8 $14) 17... Ne5 18. Bd2 Bxf3 19.
Bxf3 Rd3 (19... Nxf3+ $142 20. gxf3 Qf6 $11) 20. Qxb7 $4 {weakening the
position} (20. Bc3 $142 Nxf3+ 21. gxf3 Rxe3 22. fxe3 Qxe3+ 23. Kg2 Qe2+ 24. Kg3
$11) 20... Qxb7 $19 21. Bxb7 Red8 22. f4 Ng6 (22... Nc4 23. Ba6 Rxd2 24. Rxd2
Nxd2 25. Rc1 $19) 23. Re1 $2 (23. Rab1 $142 $17) 23... Rxd2 $19 24. Rab1 (24.
b4 axb4 25. axb4 Bxb4 $19) 24... Rb8 25. Be4 (25. Ba6 {doesn't change the
outcome of the game} Rbxb2 26. Rxb2 Rxb2 $19) 25... Rbxb2 26. Ra1 (26. Rxb2 {
doesn't get the cat off the tree} Rxb2 27. Rc1 Bxa3 28. Rc8+ Nf8 $19) 26... Bc5
27. h3 (27. Kh1 {cannot change what is in store for White} Re2 $19) 27... Nxf4
(27... f5 {and Black can already relax} 28. Bf3 Nh4 29. Rac1 Nxg2 30. Bxg2
Rxg2+ 31. Kh1 Rh2+ 32. Kg1 Bxa3 33. Rc8+ Kf7 34. Rc7+ Kg6 35. Rb1 $19) 28. Rac1
Ne6 (28... Nxg2 $6 {is not possible} 29. Rxc5 f5 30. Bxg2 Rxg2+ 31. Kh1 Rh2+
32. Kg1 Rbg2+ 33. Kf1 $17) 29. Kh1 g6 0-1

[Event "HokkaidoChessCh2023"]
[Site "?"]
[Date "2023.03.26"]
[Round "5.3"]
[White "Takeuchi, Hiroshi"]
[Black "Nakamura, Mitsuru"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "1418"]
[BlackElo "1413"]
[Annotator "Fritz 11 SE (30s)"]
[PlyCount "74"]
[SourceDate "2023.03.26"]

{D00: 1 d4 d5: Unusual lines} 1. d4 Nf6 2. Bf4 e6 3. e3 d5 4. Bd3 Be7 (4... c5
5. c3 Nc6 6. Nd2 Bd6 7. Bxd6 Qxd6 8. f4 Bd7 9. a3 Ne7 10. Ngf3 Qb6 11. Rb1 Bb5
12. Qe2 Bxd3 13. Qxd3 Nf5 14. Ne5 Nd6 15. O-O c4 16. Qc2 O-O 17. g4 Qc7 18. g5
Nfe4 19. Nxe4 {Zelbel,P (2385)-Svane,R (2427) Stroebeck 2013 1/2-1/2}) (4...
Bd6 5. Bg3 Bxg3 6. hxg3 Qd6 7. c3 c5 8. Nd2 Nc6 9. f4 h5 10. Ngf3 Ng4 11. Qe2
f5 12. Ng5 Bd7 13. Bb5 Nd8 14. Ndf3 g6 15. Ne5 Nxe5 16. dxe5 Qb6 17. Bxd7+ Kxd7
18. O-O-O Ke7 19. g4 {Carvajal,N (2334)-Diaz,J (2175) Medellin 2015 0-1 (52)})
5. h3 $146 {Secures g4} (5. Nd2 O-O 6. c3 c5 7. dxc5 Bxc5 8. Ngf3 Nc6 9. O-O
Re8 10. Bg5 e5 11. e4 dxe4 12. Nxe4 Be7 13. Bxf6 Bxf6 14. Nd6 Rf8 15. Be4 Qc7
16. Nxc8 Raxc8 17. Qa4 a6 18. Rfe1 Na5 19. Rad1 Rcd8 {Bogosavljevic,B (2302)
-Ravic,N (2151) Vrnjacka Banja 2006 1/2-1/2 (32)}) 5... h6 {Covers g5} 6. Nf3
Nbd7 7. Nbd2 c6 {Prevents intrusion on b5} 8. c3 {Covers b4} O-O 9. O-O a6 {
Controls b5} 10. Re1 {Black's piece can't move: c8} Re8 11. e4 dxe4 12. Nxe4 b5
13. Nd6 Bxd6 14. Bxd6 Nb6 15. Bh2 (15. Ba3 Bb7 $16) 15... Bb7 16. Ne5 Nbd7 (
16... Qe7 $142 $16) 17. Nf3 (17. a4 $5 Nxe5 18. Bxe5 Nd5 $16) 17... Qb6 (17...
Nb6 18. Qc2 $16) 18. Qc2 (18. b4 a5 $16) 18... Rad8 (18... c5 19. Ne5 $11) 19.
Ne5 (19. b4 a5 $16) 19... Nf8 (19... c5 $142 $5 $14 {must definitely be
considered}) 20. b4 Nd5 21. Rac1 f6 22. Ng6 (22. Nf3 Ra8 $16) 22... Bc8 (22...
Nxg6 23. Bxg6 Re7 24. Bg3 $16) 23. Nxf8 (23. Nf4 a5 24. a3 Re7 $16) 23... Rxf8
24. Qe2 Qb7 25. Qh5 Qe7 26. Qg6 f5 27. g4 (27. Be5 $5 $16) 27... Rf6 $11 {
Black threatens to win material: Rf6xg6} 28. Qh5 {Black king safety improved}
Rdf8 (28... fxg4 $142 $5 {has some apparent merit} 29. Qxg4 e5 $11) 29. gxf5
$16 Rxf5 $2 (29... Qd8 $142 $16) 30. Bxf5 $18 Rxf5 31. Qd1 $4 {White loses the
upper hand} (31. Qxf5 $142 $1 exf5 32. Rxe7 Nxe7 33. Bd6 $18) 31... Qf7 (31...
Qh4 32. Bg3 Qxh3 33. Re5 $11) 32. Re2 (32. Bg3 $142 $16) 32... Rg5+ $15 33. Kf1
$4 (33. Bg3 $142 {was a good chance to save the game} Nf4 34. h4 Nxe2+ 35. Qxe2
$11) 33... Qf3 $19 34. Ke1 (34. Re5 {doesn't do any good} Qh1+ (34... Qxh3+
$143 35. Ke1 Qxh2 36. Rxg5 hxg5 37. Qf3 $19) 35. Ke2 Qxh2 36. Rxg5 hxg5 $19)
34... Nxc3 (34... Rg2 $142 {and Black can already relax} 35. Qc2 Rxh2 36. Qe4
$19) 35. Rxc3 Qxc3+ 36. Qd2 Qxh3 37. Be5 (37. f4 Rh5 38. Rf2 $19) 37... Rg1#
0-1

[Event "HokkaidoChessCh2023"]
[Site "?"]
[Date "2023.03.26"]
[Round "5.4"]
[White "Nishimori, Toshiyuki"]
[Black "Kihara, Kotaro"]
[Result "1-0"]
[ECO "B01"]
[WhiteElo "1585"]
[BlackElo "1351"]
[Annotator "Fritz 11 SE (30s)"]
[PlyCount "155"]
[SourceDate "2023.03.26"]

{B01: Scandinavian Defence} 1. e4 d5 2. exd5 Nf6 3. d4 Nxd5 4. Nf3 g6 5. Bc4
Nb6 (5... c6 6. O-O Bg7 7. h3 O-O 8. Re1 Nd7 9. Nbd2 a5 10. a4 N7b6 11. Bf1 Bf5
12. c3 Qc7 13. Ne4 Rad8 14. Bg5 Rfe8 15. Qc1 Nc8 16. Ng3 Bd7 17. Bh6 Nd6 18. c4
Nf6 19. Bf4 Qc8 20. Qc3 {Wang,H (2739)-Nepomniachtchi,I (2718) St Petersburg
2012 0-1 (43)}) 6. Bb3 Nc6 $146 (6... Bg7 7. O-O O-O 8. c3 Nc6 9. Bg5 Na5 10.
Bc2 f6 11. Bc1 Kh8 12. Re1 e5 13. dxe5 Bg4 14. Qxd8 Raxd8 15. Nbd2 Rfe8 16.
exf6 Bxf6 17. Rxe8+ Rxe8 18. h3 Bf5 19. Bxf5 gxf5 20. Kf1 Nd5 21. Nb3 {
Ginzburg,M (2406)-Bademian Orchanian,J (2165) Punta del Este 1999 1-0 (41)}) 7.
Be3 {Black is behind in developement} Bg7 {[%cal Rc6d4,Rd8d4,Rg7d4,Gd1d4,Ge3d4,
Gf3d4] Pawn d4, live or die!} 8. c3 {Consolidates b4} (8. Nc3 O-O $11) 8... O-O
9. O-O Bf5 10. Nbd2 e5 (10... Qd7 11. Nc4 $11) 11. dxe5 Nxe5 12. Nxe5 Bxe5 13.
Re1 Re8 14. Qc1 Nd5 15. Nf3 Bf6 $4 (15... Nxe3 16. Rxe3 Bf6 17. Rxe8+ Qxe8 18.
Qf4 $11) 16. Bd4 (16. Rd1 $142 {and White takes home the point} c6 17. c4 $18)
16... Rxe1+ $14 17. Qxe1 Bxd4 (17... c6 18. h3 $14) 18. Nxd4 $16 Qd7 19. Rd1 (
19. Qe5 $5 c6 20. Re1 $16) 19... Re8 $11 {Black threatens to win material:
Re8xe1} 20. Qd2 Nb6 21. h3 {Controls g4} (21. Qf4 $142 $14) 21... h5 $4 {
letting the wind out of his own sails} (21... c5 $5 {should be considered} 22.
Nxf5 Qxf5 $11) 22. Qg5 $4 {with this move White loses his initiative} (22. Qh6
$142 {and White can look forward to a comfortable game} c6 23. Nf3 $18) 22...
c5 $14 23. Nxf5 Qxf5 24. Qxf5 gxf5 25. Kf1 Kg7 26. Bc2 {White threatens to win
material: Bc2xf5} Kf6 27. Rd6+ Re6 {Black threatens to win material: Re6xd6}
28. Rd2 f4 29. b3 {Consolidates a4+c4} Ke7 (29... h4 30. Rd8 $14) 30. c4 (30.
Bd1 Rd6 31. Rxd6 Kxd6 32. Bxh5 Nd5 $16) 30... Na8 $2 (30... Nd7 $142 $5 $14 {
would allow Black to play on}) 31. Rd5 $18 Rd6 (31... b6 32. Rxh5 Nc7 33. Rf5
$18) 32. Be4 (32. Rxc5 {makes it even easier for White} Rd2 33. Be4 Rxa2 34.
Bxb7 Nb6 35. Rxh5 Nd7 $18) 32... Ra6 (32... Rxd5 33. Bxd5 (33. cxd5 $6 Nc7 $14)
33... Nc7 34. Bxb7 $18) 33. a4 (33. Rxc5 $5 {seems even better} Rxa2 34. Bxb7
Nb6 35. Rxh5 Nd7 $18) 33... Rb6 34. Bc2 Rc6 (34... Nc7 35. Rxc5 Ne6 36. Rxh5
$18) 35. Rxh5 Nc7 36. Be4 Rb6 37. Rxc5 Ne6 (37... Kd6 38. Ra5 Rxb3 39. Rxa7 Rb4
40. Bxb7 Rxc4 $18) 38. Rb5 Rxb5 39. cxb5 Nd4 (39... Nc5 40. Bd5 $18) 40. Bd5 (
40. Bxb7 $142 $5 {might be the shorter path} Nxb3 41. Bd5 Nd4 $18) 40... b6 41.
g4 fxg3 42. fxg3 f6 43. Kf2 Kf8 (43... f5 {cannot change destiny} 44. Ke3 Nc2+
45. Kd2 $18) 44. g4 Kg7 45. Kg3 Ne2+ 46. Kh4 (46. Kf3 {makes it even easier
for White} Ng1+ 47. Kg2 Ne2 $18) 46... Nf4 (46... Kh6 47. Bc4 Nd4 48. Kg3 $18)
47. Bc4 Kh6 48. Bf7 (48. Kg3 $142 $5 {keeps an even firmer grip} Ng6 $18) 48...
Kg7 49. Bc4 Kh6 50. Kg3 Ng6 51. h4 Ne5 (51... Kg7 {is no salvation} 52. Bd3 Ne5
53. Bc2 $18) 52. Kf4 Ng6+ 53. Kg3 {Twofold repetition} Ne5 54. Be6 Ng6 55. Bf5
Ne7 56. Be4 Kg7 57. Kf4 Kh6 (57... Nc8 {is not much help} 58. Ke3 $18) 58. g5+
fxg5+ (58... Kg7 {doesn't get the bull off the ice} 59. g6 $18) 59. hxg5+ Kg7 (
59... Kh5 {hardly improves anything} 60. Bc6 Ng6+ 61. Kf5 Ne7+ 62. Kf6 Ng8+ 63.
Kf7 Kxg5 64. Kxg8 $18) 60. Ke5 Kf8 61. Ke6 Ke8 62. g6 Nxg6 63. Bxg6+ Kd8 64.
Kd6 Kc8 65. Be4 (65. b4 Kb8 66. a5 bxa5 67. bxa5 Kc8 68. Be4 Kd8 69. a6 Ke8 70.
b6 Kf7 71. bxa7 Kf8 72. a8=Q+ Kf7 73. Qb7+ Kf8 74. a7 Ke8 75. a8=Q#) 65... Kb8
(65... Kd8 {is not the saving move} 66. Bc6 Kc8 67. b4 Kb8 68. Be4 Kc8 69. a5
bxa5 70. bxa5 Kd8 71. a6 Ke8 72. b6 Kf7 73. bxa7 Kf8 74. a8=Q+ Kf7 75. Qb7+ Kf8
76. a7 Ke8 77. a8=Q#) 66. b4 Kc8 67. a5 Kb8 (67... bxa5 {does not save the day}
68. bxa5 Kd8 69. a6 Ke8 70. b6 Kf7 71. bxa7 Kf8 72. a8=Q+ Kf7 73. Qb7+ Kf8 74.
a7 Ke8 75. a8=Q#) 68. Kd7 bxa5 69. bxa5 a6 70. bxa6 Ka7 71. Bb7 Kb8 72. Kc6 Ka7
73. Kb5 (73. Bc8 Kb8 74. Bf5 Ka7 75. Kb5 Kb8 76. Kb6 Ka8 77. Be6 Kb8 78. a7+
Ka8 79. Bd5#) 73... Kb8 74. Be4 Ka7 (74... Kc7 {does not improve anything} 75.
a7 Kd6 76. a8=Q Ke5 77. a6 Kf4 78. a7 Kg4 79. Qg8+ Kf4 80. a8=Q Ke3 81. Qg3+
Kd2 82. Qa1 Ke2 83. Qae1#) 75. Bd5 (75. Bf5 Kb8 76. Kb6 Ka8 77. Be6 Kb8 78. a7+
Ka8 79. Bd5#) 75... Kb8 76. Kb6 Kc8 77. a7 Kd7 78. a8=Q (78. a8=Q Kd6 79. a6
Ke5 80. a7 Kd4 81. Qh8+ Kxd5 82. a8=Q+ Ke6 83. Qc6+ Kf5 84. Qh4 Ke5 85. Qhe4#)
1-0

[Event "HokkaidoChessCh2023"]
[Site "?"]
[Date "2023.03.26"]
[Round "5.5"]
[White "Furuse, Mizuki"]
[Black "Yoshii, Yukihiko"]
[Result "0-1"]
[ECO "C68"]
[WhiteElo "922"]
[BlackElo "1699"]
[Annotator "Fritz 11 SE (30s)"]
[PlyCount "106"]
[SourceDate "2023.03.26"]

{C68: Ruy Lopez: Exchange Variation, sidelines} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6
4. Bxc6 dxc6 5. O-O Bg4 6. h3 Bxf3 7. Qxf3 Nf6 8. d3 Be7 9. Nc3 O-O 10. Be3 Re8
$146 (10... c5 11. Kh1 Nd7 12. Qg3 Bd6 13. Qg4 Re8 14. Bg5 f6 15. Bd2 Nf8 16.
Nd5 Ne6 17. Rad1 c6 18. Ne3 Qd7 19. Nf5 Rad8 20. Be3 Bf8 21. g3 g6 22. f4 Kh8
23. Nh4 exf4 24. gxf4 Ng7 25. f5 {Elgabry,M (2271)-Abdel Aziem,R (2230) Cairo
2000 1/2-1/2 (60)}) 11. Rad1 c5 12. Rfe1 c6 {Controls b5+d5} 13. Ne2 Qc7 14.
Ng3 g6 {Prevents intrusion on f5+h5} 15. Bg5 {White threatens to win material:
Bg5xf6} Kg7 16. c3 h6 17. Bxf6+ Bxf6 18. Ne2 (18. Qg4 Kh7 $11) 18... Rad8 19.
Qg3 Qe7 20. Qf3 Rd7 21. Qe3 Red8 22. Qd2 $2 (22. f4 $142 $15 {and White can
hope to survive}) 22... c4 $1 $19 {Deflection: d3} 23. d4 (23. dxc4 Rxd2 {
Deflection Pinning}) 23... exd4 24. Nxd4 $4 {terrible, but what else could
White do to save the game?.} (24. cxd4 Qxe4 25. Qb4 b5 $19) 24... Bxd4 (24...
c5 $142 {and Black wins} 25. e5 Bxe5 $19 (25... cxd4 $6 {is no comparison} 26.
exf6+ Qxf6 27. Rb1 $19)) 25. cxd4 $17 Rxd4 26. Qxd4+ Rxd4 27. Rxd4 b5 (27...
Qe5 $142 28. Rxc4 Qxb2 $17) 28. f3 $4 (28. e5 $142 $15 {this is the best way
to fight back}) 28... Qb4 29. Rb1 Qa4 (29... Qc5 {seems even better} 30. Rbd1
b4 31. Kh1 $19) 30. a3 Qc2 31. Rdd1 a5 32. Rdc1 Qd3 33. Rd1 (33. Kf2 h5 $19)
33... Qe3+ 34. Kf1 h5 (34... Qb3 $142 $5 $19) 35. Rbc1 $17 a4 36. Rc3 Qc5 37.
Ke2 h4 38. Rd2 $4 {sad, but how else could White save the game?} (38. Kf1 Kf6
$17) 38... Qg5 (38... Qg1 $142 $19 {it becomes clear that Black will call all
the shots}) 39. Kd1 Qc5 40. Ke2 Qg1 41. Rd7 (41. Rdc2 $19 {is still a small
chance}) 41... Qxg2+ 42. Ke3 Qxb2 43. Kd4 Qd2+ 44. Kc5 Qxc3 45. Rd4 Qe3 46. e5
(46. f4 {does not help much} c3 47. Kxc6 Qxd4 48. e5 c2 49. Kc7 c1=Q+ 50. Kb7
Qd7+ 51. Kb6 Qcc6+ 52. Ka5 Qd2#) 46... Qxe5+ 47. Kb4 (47. Rd5 {does not win a
prize} Qxd5+ 48. Kb6 Qd4+ 49. Kc7 c3 50. f4 c2 51. Kb7 c1=Q 52. f5 Qd7+ 53. Ka6
Qc5 54. f6+ Kxf6 55. Ka5 Qda7#) 47... Qxd4 48. f4 (48. Ka5 {doesn't change
anything anymore} c3 49. Ka6 c2 50. f4 c1=Q 51. f5 Qf1 52. fxg6 Qxh3 53. gxf7
Qc8+ 54. Ka5 Qa8#) 48... c3+ 49. Ka5 c2 (49... Qa7+ 50. Kb4 c2 51. f5 gxf5 52.
Kc3 c1=Q+ 53. Kb4 Qc4#) 50. Ka6 c1=Q 51. Kb7 (51. f5 {does not solve anything}
Qce3 52. f6+ Kxf6 53. Kb7 Qd8 54. Kxc6 Qeb6#) 51... Qdxf4 (51... Qcc5 52. f5
Qd7+ 53. Kb8 Qf8#) 52. Ka6 (52. Ka7 {cannot undo what has already been done}
Qc7+ 53. Ka6 b4 54. axb4 Qc4+ 55. b5 Qxb5#) 52... Qb8 53. Ka5 Qc3+ (53... Qc3+
54. Ka6 Qxa3 55. Ka5 Qa7#) (53... Qc5 54. Ka6 Qbb6#) 0-1

[Event "HokkaidoChessCh2023"]
[Site "?"]
[Date "2023.03.26"]
[Round "5.6"]
[White "Ito, Katsuhide"]
[Black "Al Jbarat, Thamer"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "1233"]
[BlackElo "1309"]
[Annotator "Fritz 11 SE (30s)"]
[PlyCount "34"]
[SourceDate "2023.03.26"]

{B22: Sicilian: 2 c3} 1. e4 e6 2. d4 c5 3. c3 Nf6 4. Bd3 Be7 $146 {Black's
piece can't move: c8} (4... Nc6 5. e5 (5. Nf3 d5 6. e5 Nd7 7. O-O Be7 8. a3 a5
9. Re1 O-O 10. Bc2 Re8 11. Be3 b6 12. Nbd2 Ba6 13. g3 cxd4 14. cxd4 Nf8 15. Rc1
Rc8 16. h4 Na7 17. Ng5 f6 18. exf6 Bxf6 19. Qg4 Re7 {Prie,E (2508)
-Dragomirescu,R (2385) Aix les Bains 2011 0-1 (39)}) 5... Nd5 6. Nf3 cxd4 7.
cxd4 Bb4+ 8. Bd2 Qb6 9. O-O Nxd4 10. Ng5 Be7 11. Nc3 Nxc3 12. bxc3 Nc6 13. Re1
Qc5 14. Rb1 Nxe5 15. Rb5 Qd6 16. Rbxe5 Qxd3 17. R5e3 Qd5 18. Rg3 b5 19. Re4 {
Arencibia Rodriguez,W (2420)-Alzate,D (2365) Medellin 1987 1-0 (36)}) (4...
cxd4 5. cxd4 Nc6 6. Nf3 Nb4 7. O-O (7. Nc3 Nxd3+ 8. Qxd3 d6 9. O-O Be7 10. d5
e5 11. h3 O-O 12. Be3 Nh5 13. Qe2 g6 14. Rac1 Bd7 15. b4 Ng7 16. Nd2 f5 17.
exf5 Nxf5 18. Nde4 Nxe3 19. fxe3 Qb6 20. a3 Kg7 21. Rxf8 Rxf8 {Krapivin,A 
(2478)-Gerasimov,I (2354) Moscow 2010 1/2-1/2 (41)}) 7... Nxd3 8. Qxd3 d5 9. e5
Ne4 10. Nc3 Nxc3 11. bxc3 Bd7 12. Ng5 h6 13. Nh3 Qa5 14. Re1 g5 15. Bd2 Qa4 16.
f4 g4 17. Nf2 Rg8 18. Rab1 b5 19. Nd1 {Krapivin,A (2501)-Grachev,B (2655)
Moscow 2009 1/2-1/2 (36)}) 5. e5 {White threatens to win material: e5xf6} Nd5
6. Nf3 Qb6 (6... Nc6 $5 $11 {should not be overlooked}) 7. O-O (7. dxc5 Qxc5 8.
O-O O-O $16) 7... Nc6 (7... cxd4 8. cxd4 Nc6 9. Nc3 $14) 8. Bc2 (8. dxc5 Qc7 (
8... Bxc5 $2 9. b4 Bf8 10. b5 $18) 9. Be4 Bxc5 10. Bxd5 exd5 11. Qxd5 Ne7 $16)
8... h5 (8... cxd4 9. cxd4 d6 10. Nc3 $14) 9. h3 (9. dxc5 Qxc5 10. Nbd2 $16)
9... Rg8 $4 {releasing the pressure on the opponent} (9... cxd4 $142 $5 {
looks like a viable alternative} 10. Re1 dxc3 11. Nxc3 Nxc3 12. bxc3 Qa5 $11)
10. a3 (10. dxc5 $5 Qxc5 11. Nbd2 Na5 $18) 10... g5 11. Re1 $4 {gives the
opponent counterplay} (11. dxc5 Bxc5 12. b4 $14) 11... g4 $17 12. hxg4 hxg4 13.
Nh2 cxd4 (13... g3 $142 14. Nf3 cxd4 15. cxd4 gxf2+ 16. Kxf2 d6 $17) 14. Nxg4
$11 dxc3 (14... Bh4 15. Rf1 Bg5 16. Bxg5 Rxg5 17. Ra2 $11) 15. Nxc3 $14 Nxc3
16. bxc3 {Black king safety dropped} Qa5 {Black threatens to win material:
Qa5xc3} 17. Qf3 b6 0-1

