[Event "SapporoSummer2018"]
[Site "?"]
[Date "2018.07.28"]
[Round "1.1"]
[White "SUGIMOTO, Koichi"]
[Black "BRINKMANN, Leonard"]
[Result "1/2-1/2"]
[ECO "A53"]
[WhiteElo "1966"]
[BlackElo "1636"]
[Annotator "Fritz 15 (30s)"]
[PlyCount "74"]

{A53: Old Indian Defence without Nf3} 1. d4 d6 2. c4 e5 3. d5 Be7 4. e4 Nf6 5.
Nc3 c6 6. Nf3 (6. f3 O-O 7. Be3 a5 8. Bd3 Na6 9. Nge2 Nd7 10. a3 Bg5 11. Bf2
Ndc5 12. Bc2 cxd5 13. Nxd5 a4 14. O-O Bd7 15. Nec3 Qa5 16. Be1 Qd8 17. Nxa4
Nxa4 18. Bxa4 Bxa4 19. Qxa4 Nc7 20. Qb3 Nxd5 {Razuvaev,Y (2560)-Vokac,M (2465)
Pardubice 1993 1/2-1/2 (59)}) 6... Qc7 $146 {Black has a cramped position} (
6... O-O 7. Be2 cxd5 (7... Na6 8. Nd2 Ne8 9. O-O Bg5 10. a3 c5 11. Bg4 Bxg4 12.
Qxg4 g6 13. Nf3 {1/2-1/2 (13) Meier,T (2200)-Benko,P (2440) Augsburg 1987}) 8.
cxd5 a6 (8... Nbd7 9. Qc2 a5 10. O-O Nc5 11. Be3 b6 12. Nd2 Ng4 13. Bxg4 Bxg4
14. a3 Nd7 15. f3 Bh5 16. b4 Qc7 17. Qb2 Rfc8 18. Rfc1 Qb7 19. Nb5 f5 20. Rxc8+
Rxc8 21. Rc1 axb4 22. axb4 Nf6 23. Nc4 {Ghinda,M (2455)-Perecz,L (2315)
Dortmund 1979 1/2-1/2}) 9. h3 Nbd7 10. Qc2 b5 11. O-O Nb6 12. a3 Bd7 13. Be3
Qb8 14. Nd2 Rc8 15. Rfc1 Bd8 16. Qb3 Be8 17. Rc2 Nbd7 {1/2-1/2 (17) Yermolenko,
V (2256)-Matjushin,G (2430) Shakhty 2015}) 7. Be2 a5 8. O-O Nbd7 9. Be3 h6 {
Consolidates g5} 10. Rc1 {White has an active position} Nf8 (10... Ng4 11. Bd2
$11) 11. Ne1 (11. Nd2 N6d7 $16) 11... c5 12. f4 (12. h4 N8d7 $14) 12... exf4
13. Bxf4 {White has a new backward pawn: e4. White has a very active position}
Ng6 14. Bg3 {White has an active position} Qd8 15. Nb5 {'the knight is the
knight!'} (15. Nd3 O-O $14) 15... Ra6 {Black has a cramped position} (15...
Nxe4 16. Qd3 Nxg3 17. Qxg3 $15) 16. Nd3 (16. Bf3 $142 $5 $14 {would keep White
alive}) 16... Nxe4 $15 17. Be1 {White has a king attack} O-O {Black castles
and improves king safety} 18. Bh5 {Black has a cramped position} Bg5 {Black
threatens to win material: Bg5xc1} 19. Rc2 Be3+ (19... Nf6 20. Bd2 $15) 20. Kh1
$11 {White has an active position} Nf6 21. Bxg6 (21. Re2 Nxh5 22. Rxe3 Nf6 $11)
21... fxg6 {Black has the pair of bishops.} (21... Bg4 22. Bxf7+ Rxf7 23. Qa1
$15) 22. Bh4 (22. h3 $5 $15 {is worth looking at}) 22... g5 $17 23. Bg3 (23.
Bf2 Bg4 24. Qe1 Bf4 $17) 23... Bg4 24. Qe1 Re8 25. Qa1 Ne4 26. Bf2 Nxf2+ (26...
Bd2 27. Nc3 Bxc3 28. bxc3 $19) 27. Nxf2 $17 Bd7 28. Re2 Bf4 (28... Bxb5 29.
cxb5 Ra8 30. Qe1 $17) 29. Rxe8+ Bxe8 (29... Qxe8 30. Nc7 Qh5 31. h3 $17) 30.
Nd3 (30. Qe1 $5 {looks like a viable alternative} Ra8 31. Nd3 Bxb5 32. Qe6+ Kh7
33. cxb5 $15) 30... Bxb5 $17 31. cxb5 Ra8 32. Nxf4 gxf4 33. Qd1 Qf6 34. Qd2 Re8
35. h3 b6 (35... Re3 36. Kg1 $19) 36. Rxf4 Re1+ (36... Qe5 $142 $5 $17) 37.
Qxe1 $11 Qxf4 1/2-1/2

[Event "SapporoSummer2018"]
[Site "?"]
[Date "2018.07.28"]
[Round "1.2"]
[White "KOBAYASHI, Katsuhiko"]
[Black "YOSHII, Yukihiko"]
[Result "1-0"]
[ECO "C90"]
[WhiteElo "1455"]
[BlackElo "1844"]
[Annotator "Fritz 15 (30s)"]
[PlyCount "107"]

{[%mdl 8192] C90: Closed Ruy Lopez with 7...d6: Early deviations} 1. e4 e5 2.
Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 Bg4 9. h3
Bxf3 10. Qxf3 O-O 11. d3 Na5 (11... Rb8 12. Nd2 Nd7 13. Bd5 Na7 14. Nf1 Nb6 15.
Bb3 a5 16. a4 bxa4 17. Bxa4 Nxa4 18. Rxa4 Nc6 19. Ne3 Bg5 20. Nc4 Rb5 21. Bxg5
Qxg5 22. Rea1 Rfb8 23. g3 h5 24. h4 Qg4 25. Qxg4 hxg4 26. Kf1 {Sax,G (2524)
-Romanishin,O (2572) Bled 1999 1-0 (48)}) 12. Bc2 c5 13. Bg5 $146 (13. Nd2 Re8
(13... Ne8 14. Nf1 Bg5 15. Ne3 Nc6 16. g3 Ne7 17. a4 Bh6 18. Kg2 Nc7 19. Qg4
Qc8 20. f4 Kh8 21. Qxc8 Rfxc8 22. Ng4 Ng8 23. fxe5 Bxc1 24. Rexc1 h5 25. exd6
hxg4 26. dxc7 gxh3+ 27. Kxh3 bxa4 28. Rxa4 {Padmini,R (2454)-Htay,M (2286) Ho
Chi Minh City 2015 1-0 (50)}) (13... Nd7 14. Nf1 Bg5 {1/2-1/2 (14) Bellia,F 
(2399)-Salvador,R (2527) Milan 2010} 15. Ne3 Bxe3 16. Bxe3 Nc6 17. Rad1 Rc8 18.
Qg3 Qf6 19. f4 Qg6 20. Qf2 exf4 21. Bxf4 Qf6 22. Qg3 Nde5 23. Rf1 Qe6 24. Rf2
Qg6 25. Qxg6 hxg6 26. d4 cxd4 27. cxd4 Nc4 28. b3 g5 29. Bc1 Nb6 {Zaitsev,A 
(2402)-Khanov,V (2255) Tula 2005 1-0 (36)}) 14. Nf1 Nd7 15. Qg3 Kh8 16. Ne3 Bf8
17. Bd2 Nc6 18. Bb3 c4 19. dxc4 Nc5 20. Bc2 Rb8 21. cxb5 axb5 22. Nd5 Ne6 23.
a4 Qc8 24. b4 Ncd4 25. Bd1 Nc6 26. axb5 Rxb5 27. Be2 Rb8 {Dutreeuw,M (2410)
-Osman,G (2185) Moscow 1994 1-0 (60)}) 13... Nc6 {[%cal Yb5b4] Black plans b4}
14. Nd2 Rc8 15. Rad1 Qc7 16. Qe2 b4 {Black gets more space} (16... h6 17. Bh4
$11) 17. Nf3 a5 18. Bb3 h6 19. Bh4 (19. Bc1 bxc3 20. bxc3 a4 21. Bxa4 Qa5 22.
Bxc6 Rxc6 $16) 19... Nh7 20. Bxe7 Qxe7 21. d4 cxd4 22. cxd4 Nxd4 (22... Ng5 $5
{is interesting} 23. Nxg5 Qxg5 24. dxe5 dxe5 $11) 23. Nxd4 $16 exd4 24. Rxd4
Nf6 (24... Rc5 $5 $14) 25. Qa6 $16 Rc5 26. Qxd6 Qa7 (26... Re8 $5 $16) 27. e5
$18 Re8 $4 {shortens the misery for Black} (27... Ne8 28. Qd7 Qxd7 29. Rxd7 Nc7
$18) 28. Rf1 (28. Re3 $142 {secures the win} Rc1+ 29. Kh2 $18) 28... Rcxe5 $11
29. Rc4 Ne4 {Black threatens to win material: Ne4xd6} (29... R5e7 30. Ba4 Rf8
31. Rc2 $11) 30. Rc7 $14 Nxd6 31. Rxa7 Kf8 (31... R8e7 32. Ra8+ Kh7 33. Rd1 $14
) 32. Rd1 {White threatens to win material: Rd1xd6} (32. Rd7 a4 33. Bxa4 Rd5
$16) 32... Rd8 (32... Re1+ 33. Kh2 Rxd1 34. Bxd1 $11) 33. Rd5 (33. Kf1 f6 $16)
33... Rxd5 $14 34. Bxd5 f6 (34... Rc8 $142 $5 $14 {is noteworthy}) 35. Rxa5 $16
Nf5 36. Bb3 Nd4 37. Ra4 (37. Bc4 $5 $16) 37... Nxb3 $14 38. axb3 {A rook
endgame occured.} Rd4 (38... Rd1+ 39. Kh2 $14) 39. Kf1 $16 Ke7 40. Ke2 Ke6 41.
Ke3 Rh4 (41... Rd1 42. Rxb4 Rb1 43. Rb6+ Ke5 44. f4+ Kd5 45. h4 $16) 42. g3 {
White threatens to win material: g3xh4} (42. f4 $142 $5 $18) 42... Rxh3 $14 43.
Rxb4 {White has a new passed pawn: b3} Rh5 44. Re4+ Kf7 (44... Kd5 45. b4 $16)
45. b4 Rb5 46. Kd3 g5 $2 (46... Rb7 $142 $5 $16) 47. Kc4 $18 Rf5 $4 {leading
to a quick end} (47... Rb8 $142 48. b5 h5 $18) 48. Re2 h5 (48... g4 {is not
the saving move} 49. b5 Rg5 50. b6 $18) 49. b5 h4 (49... g4 {praying for a
miracle} 50. b6 Rg5 $18) 50. b6 h3 51. b7 h2 52. Re1 (52. b8=Q Re5 53. Rxe5
fxe5 54. Qh8 h1=Q 55. Qxh1 Kg7 56. Kd5 e4 57. Ke6 e3 58. Qb7+ Kh6 59. Kf6 Kh5
60. Qc8 exf2 61. Qh3#) 52... Rxf2 (52... Re5 53. Rh1 Re4+ 54. Kc5 Re8 55. Rxh2
Kg6 $18) 53. b8=Q Rc2+ (53... Kg6 {cannot undo what has already been done} 54.
Qe8+ Kh6 55. Re7 h1=Q 56. Qh8+ Kg6 57. Qxh1 Rf4+ 58. gxf4 Kf5 59. Qf3 Kg6 60.
f5+ Kh6 61. Qh3#) 54. Kb3 (54. Kb3 h1=Q 55. Qe8+ Kg7 56. Re7+ Kh6 57. Qh8+ Kg6
58. Qxh1 Rh2 59. Qxh2 f5 60. Qh7+ Kf6 61. Qf7#) 1-0

[Event "SapporoSummer2018"]
[Site "?"]
[Date "2018.07.28"]
[Round "1.3"]
[White "KIKUCHI, Akira"]
[Black "NAKAMURA, Misturu"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "1763"]
[BlackElo "1078"]
[Annotator "Fritz 15 (30s)"]
[PlyCount "71"]

{[%mdl 8192] D02: 1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6
3 Bf4} 1. d4 d5 2. Bf4 Nf6 3. e3 e6 4. c3 $146 {Controls b4} (4. Nf3 c5 5. Nbd2
Nbd7 6. c3 Be7 7. Ne5 O-O 8. Bd3 Nxe5 (8... a6 9. Qf3 cxd4 10. exd4 Nxe5 11.
dxe5 Nd7 12. Qh3 g6 13. O-O-O b5 14. Kb1 Nc5 15. Bc2 a5 16. Nf3 b4 17. c4 a4
18. Bd3 Qc7 19. Qh6 Nxd3 20. Rxd3 dxc4 21. Rd4 Re8 22. Bg5 Bf8 23. Qh4 {
Vujic,B (2357)-Karst,E (2317) Germany 2005 1-0 (39)}) 9. dxe5 Nd7 10. Qh5 g6
11. Qh6 f6 12. Bxg6 hxg6 13. Qxg6+ Kh8 14. h4 fxe5 15. Qh5+ Kg8 16. Bh6 Bf6 17.
Qg6+ Kh8 18. Bxf8 Nxf8 {Klaric,Z (2395)-Vul,A (2310) Kecskemet 1991 1-0 (31)})
4... c6 {Prevents intrusion on b5} 5. Nf3 Nbd7 6. Nbd2 c5 7. Bd3 c4 {Black
threatens to win material: c4xd3} 8. Be2 b5 9. b3 Qb6 (9... Nh5 10. O-O $11)
10. Rb1 $14 Qc6 11. Qc2 a5 12. bxc4 bxc4 13. O-O Ba6 {Black should quickly
conclude development.} 14. h3 {Covers g4} Be7 15. Ne5 Nxe5 16. Bxe5 O-O 17.
Bxf6 (17. Bf3 Ra7 $11) 17... Bxf6 $11 18. e4 {The typical lever} e5 (18... Rfe8
$142 $5 $11 {would allow Black to play on}) 19. exd5 $16 Qxd5 $2 (19... Qc7
$142 $5 20. Ne4 Be7 $16) 20. Bf3 $18 Qd7 (20... Qd8 21. Bxa8 Qxa8 22. Ne4 $18)
21. Bxa8 Rxa8 22. dxe5 (22. Qe4 $5 {seems even better} Rd8 23. dxe5 Be7 $18)
22... Bxe5 23. Nf3 Bf6 24. Rfd1 Qc7 (24... Qc6 25. Nd4 Qc5 26. Qb2 $18) 25. Re1
(25. Qf5 $5 h6 $18) 25... Bb7 26. Re3 g6 27. Rbe1 (27. Qb2 Bd5 $16) 27... Bc6 (
27... Kg7 28. Rd1 $16) 28. Nd4 Bd7 29. Qe4 Rd8 30. Qf3 Bg5 $4 {causes even
greater problems} (30... Kg7 $142 $16) 31. Re5 $18 Bd2 32. R1e2 Bc1 (32... f6
33. Qd5+ Be6 34. Qxe6+ Qf7 35. Qxf7+ Kxf7 36. Re7+ Kf8 $18) 33. Re7 Rf8 34. Qd5
Qc8 (34... Qf4 {doesn't change anything anymore} 35. Rxd7 Qf6 36. Rd6 $18) 35.
Qxd7 (35. Rxd7 Ba3 36. Nc6 Qxd7 37. Qxd7 h6 38. Re8 h5 39. Nd8 Be7 40. Qxe7
Rxe8 41. Qxe8+ Kg7 42. Qxf7+ Kh6 43. Qf8+ Kh7 44. Ne6 a4 45. Qg7#) 35... Qxd7
36. Rxd7 1-0

[Event "SapporoSummer2018"]
[Site "?"]
[Date "2018.07.28"]
[Round "1.4"]
[White "ISHII, Hibiki"]
[Black "WATANABE, Katsumi"]
[Result "0-1"]
[ECO "C41"]
[BlackElo "1672"]
[Annotator "Fritz 15 (30s)"]
[PlyCount "104"]

{[%mdl 8192] C41: Philidor Defence} 1. e4 e5 2. Nf3 d6 3. d4 Nd7 4. dxe5 Nxe5
5. Nxe5 dxe5 6. Qxd8+ Kxd8 7. Bc4 f6 8. Nc3 (8. Be3 Bd6 9. Nc3 c6 10. O-O-O Kc7
11. Rd3 Ne7 12. Rhd1 Bb4 13. a3 Bxc3 14. Rxc3 b6 15. Rcd3 Ng6 16. a4 Re8 17. f3
Re7 18. a5 Nf4 19. Bxf4 exf4 20. g3 fxg3 21. hxg3 f5 22. exf5 Bxf5 {Moser,E 
(2424)-Marin,M (2533) Barcelona 2007 1/2-1/2 (34)}) 8... Bb4 $146 (8... c6 9.
Be3 Kc7 10. O-O-O Nh6 (10... Ne7 11. f4 Bg4 12. Rd2 Nc8 13. h3 Bh5 14. g4 Be8
15. fxe5 fxe5 16. Rf1 Nd6 17. Be6 b6 18. Bg5 Nb7 19. Bh4 Nc5 20. Bf7 Bd7 21.
Bg3 Bd6 22. Rfd1 Rhf8 23. Bc4 Rf6 24. Rxd6 Rxd6 25. Bxe5 {Chernov,M (2220)
-Nigametzianov,M (2416) Novokuznetsk 2012 1-0 (31)}) 11. f3 Be7 12. Rd3 Rf8 13.
Bxh6 gxh6 14. g4 Bd7 15. Ne2 h5 16. gxh5 f5 17. Rg1 fxe4 18. fxe4 h6 19. c3
Bg5+ 20. Kd1 b5 21. Bb3 Rad8 22. h4 Be6 23. Nd4 {Drei,A (2305)-Medancic,R 
(2285) Kastav 2001 1-0 (32)}) (8... Bc5 9. f4 c6 10. Rf1 Bd6 11. f5 b5 12. Bb3
Bc5 13. Rf3 Ne7 14. Be3 Bxe3 15. Rxe3 Kc7 16. O-O-O Bb7 17. Be6 Rad8 18. Rxd8
Rxd8 19. Rg3 g6 20. Rh3 h5 21. b4 Rh8 22. fxg6 Nxg6 23. Rg3 {Skaric,D (2271)
-Grbic,M (2296) Belgrade 2013 1/2-1/2 (54)}) 9. Bd2 {Black has a cramped
position} Ne7 10. O-O-O {White has a king attack} Ke8 $2 (10... Bd6 $14) 11. g3
$4 {weakening the position} (11. Nb5 $142 {would have given White the upper
hand} Bd6 12. Bb4 $18) 11... Bg4 $11 {Black threatens to win material: Bg4xd1}
12. Rde1 Nc6 13. h3 {White threatens to win material: h3xg4} Bf3 14. Rhg1 Nd4 (
14... Bc5 $5 {is worth consideration} 15. Be3 Bb4 $11) 15. Nd5 $14 Bxd2+ 16.
Kxd2 Rd8 17. Nxc7+ Kd7 18. Nb5 Kc6 19. Nxd4+ Rxd4+ 20. Bd3 Rhd8 21. Ke3 Bh5 22.
g4 Bf7 23. b3 h6 24. Rd1 b5 25. Be2 a6 26. Rxd4 Rxd4 27. Rd1 Rxd1 28. Bxd1 Kc5
29. a3 g5 30. Kd3 Bg6 31. f3 h5 (31... Bf7 $5 $16) 32. b4+ Kc6 33. c4 h4 34. a4
Bf7 35. Bb3 Be8 (35... Kb7 36. a5 $18) 36. axb5+ (36. cxb5+ axb5 37. a5 Bd7 $18
) 36... axb5 37. cxb5+ (37. c5 $5 Bd7 $18) 37... Kxb5 $16 38. Kc3 Kb6 39. Bd5 (
39. Bc4 Ba4 40. Kd3 Bd1 $16) 39... Bb5 (39... Ba4 $142 $5 $11 {and Black has
air to breath}) 40. Bc4 $16 Ba4 41. Bd3 (41. Kd2 $142 $16) 41... Bd1 $11 {
Black threatens to win material: Bd1xf3} 42. Kc4 $2 (42. Kd2 $142 {and White
can hope to live} Bxf3 43. Ke3 $11) 42... Bxf3 $19 43. Kd5 $4 {terrible, but
the game is lost in any case} (43. Bf1 $142 Bxe4 44. Kc3 $19) 43... Bg2 44. Ke6
Bxh3 45. Kxf6 Bg2 46. Kxg5 h3 47. Kf6 h2 48. g5 h1=Q 49. Kxe5 Qh5 (49... Qh8+
50. Kf4 Qc3 51. Ke3 Bf1 52. g6 Qxd3+ 53. Kf4 Bg2 54. g7 Qxe4+ 55. Kg3 Qg6+ 56.
Kf2 Qxg7 57. b5 Kxb5 58. Kg1 Kc4 59. Kf2 Kd3 60. Kg1 Bf3+ 61. Kf1 Qg2+ 62. Ke1
Qe2#) 50. Kf6 Qf3+ 51. Kg7 (51. Ke6 {does not save the day} Qxd3 52. g6 Qxe4+
53. Kf6 Qf4+ 54. Ke6 Qg5 55. b5 Be4 56. Kf7 Bd5+ 57. Ke8 Kc7 58. b6+ Kd6 59.
Kf8 Qe7#) 51... Qxd3 52. e5 (52. Kf7 {does not improve anything} Bxe4 53. g6
Qd6 54. b5 Bd3 55. Kg7 Qxg6+ 56. Kf8 Qf6+ 57. Kg8 Qe7 58. Kh8 Qh7#) 52... Qf5 (
52... Qf5 53. e6 Be4 54. e7 Qxg5+ 55. Kf8 Qf6+ 56. Kg8 Qxe7 57. b5 Kxb5 58. Kh8
Qh7#) (52... Be4 53. g6 Qg3 54. Kf6 Qxg6+ 55. Ke7 Kc7 56. b5 Qg7+ 57. Ke6 Kd8
58. b6 Qg6#) 0-1

[Event "SapporoSummer2018"]
[Site "?"]
[Date "2018.07.28"]
[Round "1.5"]
[White "KANAMARU, Tomoji"]
[Black "TAKEUCHI, Hiroshi"]
[Result "1-0"]
[ECO "C04"]
[WhiteElo "1666"]
[Annotator "Fritz 15 (30s)"]
[PlyCount "57"]

{[%mdl 8256] C04: French Tarrasch: 3...Nc6} 1. e4 e6 2. d4 d5 3. Nd2 Nc6 4. c3
g6 (4... Nge7 5. Ngf3 g6 6. Bd3 Bg7 7. O-O O-O 8. Re1 a5 9. e5 b6 10. Nf1 Ba6
11. Bc2 Nb8 12. h4 c5 13. N1h2 Nd7 14. h5 Rc8 15. Bg5 Re8 16. Ng4 Qc7 17. Rc1
Nf5 18. Qd2 Kh8 19. g3 {Jansa,V (2495)-Karlsson,L (2485) Gausdal 1991 1-0 (47)}
) 5. Bd3 $146 (5. Ngf3 Bg7 6. Bd3 (6. Bb5 Nge7 7. O-O a6 8. Ba4 Bd7 9. Re1 f5
10. exd5 exd5 11. Nf1 O-O 12. Bg5 Bf6 13. Qe2 Bxg5 14. Nxg5 Kg7 15. Ng3 Re8 16.
Nh5+ gxh5 17. Qxh5 Ng6 18. Qxh7+ Kf6 19. h4 Re7 20. Qh5 Qh8 {Tishin,P (2443)
-Gorbunov,O (2216) Tula 2005 1-0 (47)}) 6... Nh6 7. O-O O-O 8. Re1 f5 9. exd5
exd5 10. Ne5 Nxe5 11. dxe5 f4 12. h3 Be6 13. Nf3 c5 14. Bd2 g5 15. Qc2 Nf5 16.
b3 h5 17. Nh2 Qe7 18. Qd1 Qe8 19. Be2 Bf7 {Barglowski,F (2206)-Grabarczyk,B 
(2439) Glogow 2001 0-1 (40)}) (5. e5 Bg7 6. f4 (6. Bd3 f6 7. exf6 Nxf6 8. Ndf3
O-O 9. Bg5 Qd6 10. Qe2 Nh5 11. g3 e5 12. dxe5 Nxe5 13. Nxe5 Qxe5 14. Qxe5 Bxe5
15. f4 Bg7 16. O-O-O Bg4 17. Be2 Bxe2 18. Nxe2 c6 19. Nd4 Rae8 20. Rhe1 Kf7 {
Zambor,N (2300)-Cibulka,V (2295) Slovakia 2004 1/2-1/2 (51)}) 6... h5 7. Ngf3
Nh6 8. Bd3 Ne7 9. Ng5 Nef5 10. Ndf3 Bd7 11. O-O b6 12. Qe2 Qe7 13. b4 a5 14. b5
a4 15. Rb1 O-O 16. Rb4 Rfc8 17. Ba3 Qe8 18. Rbb1 Ra5 19. Rfc1 Ra7 {Salgado
Lopez,I (2597)-Orndahl,M (2206) Warsaw 2013 1-0 (49)}) 5... dxe4 6. Nxe4 f5 7.
Bg5 (7. Ng5 $5 $14) 7... Be7 $11 8. Bxe7 Qxe7 9. Nd2 (9. Nc5 e5 10. Ne2 Qd6 $11
) 9... Bd7 10. Ngf3 O-O-O (10... e5 11. O-O e4 12. Bb5 $11) 11. Qe2 Nf6 12.
O-O-O Kb8 13. Rhe1 Rhe8 14. Nc4 Nd5 15. g3 {Secures f4} Ka8 16. Nce5 Nxe5 17.
Nxe5 {The knight feels good on e5} Ba4 {Black threatens to win material: Ba4xd1
} 18. Kb1 (18. Rd2 $142 $14 {and White could well hope to play on}) 18... Bxd1
$17 19. Qxd1 {Black wins the exchange} Rd6 20. Nc4 {White threatens to win
material: Nc4xd6} Rc6 21. Ne5 {The white knight on an outpost} (21. h4 Nf6 $15)
21... Rxc3 $1 $17 {Black stays in the lead} 22. Qa4 (22. bxc3 Nxc3+ 23. Ka1 (
23. Kb2 Qb4+ {Double attack}) (23. Kc1 Qa3+ 24. Kc2 (24. Kd2 Qb2+ {Double
attack} (24... Nxd1 {Zwischenzug})) 24... Nxd1 {Zwischenzug}) (23. Kc2 Nxd1 {
Combination}) 23... Nxd1 {Combination}) 22... Rd8 23. Ka1 $2 (23. Qa5 $142 Rxd3
$1 {taking the lead} 24. Nxd3 $17) 23... Nb6 $19 24. Qd1 Rxd3 $1 {touch・} 25.
Qxd3 (25. Qxd3 c5 {Combination}) (25. Nxd3 Rxd4 {Combination}) 25... Qb4 (25...
c5 26. Nf3 cxd4 27. Kb1 $19) 26. Rd1 (26. Nf3 Rd6 $17) 26... Rd5 (26... c5 27.
a3 Qa4 28. Rc1 Qxd4 29. Qe2 $17) 27. a3 Qd6 28. Nc4 (28. f4 Kb8 $17) 28... Nd7
$4 {throws away the game} (28... Nxc4 $142 29. Qxc4 Qd7 $17) 29. Nxd6 $18 (29.
Nxd6 Rxd6 30. Re1 $18) 1-0

[Event "SapporoSummer2018"]
[Site "?"]
[Date "2018.07.28"]
[Round "2.1"]
[White "KANAMARU, Tomoji"]
[Black "KIKUCHI, Akira"]
[Result "0-1"]
[ECO "B17"]
[WhiteElo "1666"]
[BlackElo "1763"]
[Annotator "Fritz 15 (30s)"]
[PlyCount "54"]

{B17: Caro-Kann: Modern Line (4...Nd7)} 1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4
Nd7 5. Nf3 Ngf6 6. Bd3 Nxe4 7. Bxe4 Nf6 8. Bd3 Bg4 9. c3 e6 10. O-O Be7 11. Re1
(11. b3 O-O 12. Bb2 Nd5 13. Bc2 Nf4 14. Re1 Bd6 15. Be4 f5 16. Bd3 Qf6 17. Bc1
Rad8 18. Bxf4 Bxf4 19. Bc4 Rfe8 20. h3 Bh5 21. Be2 c5 22. Qc2 cxd4 23. cxd4 Rd5
24. Rad1 Red8 25. Qc3 b5 {Polgar,S (2500)-Gulko,B (2595) San Francisco 1995 1/
2-1/2 (51)}) 11... O-O 12. Be2 $146 (12. Bf4 c5 13. dxc5 Bxc5 14. h3 Bh5 {
1/2-1/2 (13) Zjukin,S (2398)-Svirjov,I (2346) Tallinn 1999}) (12. Bg5 Qd5 13.
Re5 Bxf3 14. gxf3 Qd7 15. Kh1 Nd5 16. f4 g6 17. Bh6 Rfe8 18. f5 Bf6 19. fxg6
hxg6 20. Rh5 Bg7 21. Qd2 Bh8 22. Rg1 Ne7 23. Bf8 Rxf8 24. Qh6 Qd5+ 25. Rxd5
cxd5 26. h4 Bg7 {Arosemena,J (2203)-Borda,A (2164) Khanty-Mansiysk 2010 1-0 
(59)}) (12. h3 Bh5 $14) 12... Qc7 13. Ne5 Bxe2 14. Rxe2 Rfd8 15. Bf4 Nd5 16.
Bg3 Bd6 17. Qc2 f6 {Black threatens to win material: f6xe5} (17... c5 18. dxc5
Qxc5 19. Rd1 $11) 18. Ng4 (18. Nd3 Qf7 $14) 18... Bxg3 $11 19. hxg3 Qf7 20.
Rae1 Re8 21. c4 Nc7 22. Qb3 Rab8 23. Qa3 a6 24. Qc5 Qf8 25. Qb6 {White
threatens to win material: Qb6xc7} Qd6 26. b4 Qd7 27. a4 Na8 (27... Na8 28. Qa7
Rbd8 $11) 0-1

[Event "SapporoSummer2018"]
[Site "?"]
[Date "2018.07.28"]
[Round "2.2"]
[White "WATANABE, Katsumi"]
[Black "KOBAYASHI, Katsuhiko"]
[Result "1-0"]
[ECO "E62"]
[WhiteElo "1672"]
[BlackElo "1455"]
[Annotator "Fritz 15 (30s)"]
[PlyCount "81"]

{[%mdl 8192] E62: King's Indian: Fianchetto: 6...c6 and Panno Variation (6...
Nc6) without ...a6} 1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d6 6. c4
Bg4 7. Nc3 Nbd7 $146 (7... Bxf3 8. Bxf3 Nc6 9. Bxc6 (9. Bg2 Nd7 10. e3 e5 11.
Ne2 Re8 12. b3 exd4 13. Nxd4 Nxd4 14. exd4 c6 15. Rb1 Nf6 16. d5 c5 17. Bf4 Qc7
18. Qd3 Ng4 19. h3 Ne5 20. Qc2 a6 21. Rfe1 b5 22. Re2 Qd7 23. Rbe1 f5 {Hutters,
T (2285)-Hoi,C (2365) Espergarde 1987 1/2-1/2}) 9... bxc6 10. Qa4 Qd7 11. Kg2
Rfb8 12. Rd1 h5 13. Rb1 h4 14. f3 a5 15. Qc2 h3+ 16. Kg1 Qf5 17. Qxf5 gxf5 18.
Na4 Nd7 19. b3 Nb6 20. Nxb6 Rxb6 21. Ba3 Rbb8 22. Kf2 {Hansen,C (2505)-Hoi,C 
(2380) Copenhagen 1984 1/2-1/2 (58)}) (7... Qd7 8. Re1 (8. b3 Bh3 9. Bb2 Qg4
10. e4 Nc6 11. Re1 e5 12. Nd5 Ne8 13. dxe5 Nxe5 14. Nxe5 Bxe5 15. f3 Qd7 16.
Qd2 Bxg2 17. Kxg2 c6 18. Nb6 axb6 19. Bxe5 f6 20. Bc3 Qf7 21. Qd4 c5 22. Qd3
Rd8 {Helmers,K (2205)-Cuartas,C (2425) Thessaloniki 1984 1/2-1/2 (66)}) 8...
Re8 9. Bf4 Nh5 10. Be3 Na6 11. Ng5 Qc8 12. Qb3 Rb8 13. c5 Rf8 14. cxd6 exd6 15.
Nb5 h6 16. Nf3 Ra8 17. Rac1 Qd7 18. d5 c5 19. dxc6 bxc6 20. Nc3 Rfe8 21. Qc4
Nc7 22. Bd4 {Tal,M (2580)-Kremenietsky,A (2390) Moscow 1990 1-0 (38)}) (7... a5
8. Bg5 Qd7 9. Qd2 Re8 10. Bh6 Bh8 11. Ng5 Qc8 12. h3 Bd7 13. f4 Nc6 14. e3 Nd8
15. Kh2 e5 16. fxe5 dxe5 17. d5 Nh5 18. Qf2 Ra6 19. g4 Nf6 20. Qh4 Bxg4 21.
Rxf6 Bxf6 22. hxg4 {Carron,J (2416)-Gaehler,M (2247) Graechen 2009 1-0}) 8. Bf4
(8. Ng5 h6 9. h3 hxg5 10. hxg4 c5 $14) 8... c6 {Consolidates b5+d5} 9. Qd2 Bxf3
10. Bxf3 e5 11. dxe5 {White forks: d6+f6} (11. Be3 exd4 12. Bxd4 Qc7 $14) 11...
Nxe5 $11 12. b3 {Secures c4} (12. Bxe5 dxe5 13. Rfd1 Qa5 $11) 12... Nxf3+ $15
13. exf3 d5 14. c5 d4 15. Ne2 d3 {Don't underestimate that pawn} 16. Nc3 Nd5 {
Black threatens to win material: Nd5xc3} 17. Rac1 $2 (17. Nxd5 Bxa1 18. Nc7 Qd4
19. Nxa8 Bc3 $11) 17... Nxc3 (17... Nxf4 $142 {and the scales tip in favour of
Black} 18. gxf4 Qh4 $19) 18. Rxc3 $15 Bxc3 19. Qxc3 {Black wins the exchange}
Qd5 (19... Re8 $142 20. Rd1 Qe7 $15) 20. Kg2 $4 {hands over the advantage to
the opponent} (20. Bh6 $142 {is the best option White has} f6 21. Bxf8 Rxf8 22.
Rd1 $11) 20... g5 $19 21. Bd6 Rfe8 (21... g4 $142 $5 22. Bxf8 gxf3+ 23. Kg1
Rxf8 $19) 22. Rd1 $15 g4 23. Rxd3 gxf3+ 24. Rxf3 b6 25. b4 (25. Qf6 Qe6 $11)
25... bxc5 (25... Re2 26. Qf6 $15) 26. bxc5 (26. Bxc5 Re5 $11) 26... Re2 $15 {
Black threatens to win material: Re2xa2} 27. Qf6 Qe6 (27... Rae8 28. h3 $17)
28. Qc3 (28. Qf4 Re8 $15) 28... Rxa2 $15 29. Rf4 Qd5+ (29... Re8 $5 30. Qf3 Qd5
31. Qxd5 cxd5 32. Rg4+ Kh8 $17) 30. Kh3 $11 {White has a mate threat} Qh5+ $4 {
gives the opponent new chances} (30... h5 $142 {was possible} 31. Qe3 Qe6+ 32.
Qxe6 fxe6 $11) 31. Rh4 $18 Qxh4+ (31... Qg6 {the only chance to get some
counterplay} 32. Rg4 Qxg4+ 33. Kxg4 Rxf2 $18) 32. gxh4 Rxf2 (32... Re8 {
otherwise it's curtains at once} 33. Qg3+ Kh8 34. Be5+ Rxe5 35. Qxe5+ Kg8 36.
Qg5+ Kf8 $18) 33. Qg3+ Kh8 34. Qxf2 Kg7 (34... f5 {cannot change destiny} 35.
Qxf5 Kg8 36. Qe6+ Kg7 37. Qe7+ Kg6 38. h5+ Kxh5 39. Qf7+ Kh6 40. Bf4#) 35. Be5+
(35. Qg3+ Kf6 36. Qe5+ Kg6 37. Qg5#) 35... Kf8 36. Qf6 Re8 (36... a5 {doesn't
change the outcome of the game} 37. Bd6+ Kg8 38. Qg5+ Kh8 39. Be5+ f6 40. Bxf6#
) 37. Bd6+ (37. Qh6+ Ke7 38. Qd6#) 37... Kg8 38. Be5 Rxe5 $4 {a weak move,
ruining a winning position} (38... Kf8 39. Qh6+ Kg8 40. Qg7#) 39. Qxe5 a5 (
39... f6 {is not much help} 40. Qe8+ Kg7 41. Kg4 a6 42. Kf5 a5 43. Qe7+ Kg8 44.
Kxf6 h5 45. Qg7#) 40. h5 (40. Kg4 f6 41. Qc7 Kh8 42. Kf5 h5 43. Kxf6 a4 44.
Qg7#) 40... a4 41. h6 (41. h6 Kf8 42. Kh4 f5 43. Kg5 Kf7 44. Kxf5 a3 45. Qg7+
Ke8 46. Ke6 a2 47. Qe7#) (41. Kg4 f6 42. Qe8+ Kg7 43. Qe7+ Kg8 44. h6 f5+ 45.
Kxf5 Kh8 46. Qg7#) 1-0

[Event "SapporoSummer2018"]
[Site "?"]
[Date "2018.07.28"]
[Round "2.3"]
[White "BRINKMANN, Leonard"]
[Black "NISHIMORI, Toshiyuki"]
[Result "1-0"]
[ECO "A03"]
[WhiteElo "1636"]
[BlackElo "1823"]
[Annotator "Fritz 15 (30s)"]
[PlyCount "107"]

{[%mdl 8192] A03: Bird's Opening with 1...d5} 1. f4 d5 2. Nf3 Nf6 3. e3 Nc6 4.
Bb5 Bd7 5. Bxc6 $146 (5. O-O e6 6. b3 Bd6 7. Bb2 O-O 8. d3 a6 9. Bxc6 Bxc6 10.
Nbd2 Qe7 11. Qe1 Ba3 12. Bd4 Nd7 13. Qg3 f6 14. Rae1 Bb4 15. Ba1 e5 16. Nh4 Qe6
17. Re2 Rae8 18. f5 Qd6 19. Qg4 Rf7 {Rodriguez Vila,A (2559)-Mekhitarian,K 
(2416) Santos 2007 1/2-1/2 (39)}) 5... Bxc6 {Black has the pair of bishops} 6.
O-O e6 7. b3 {Covers a4} b6 8. Bb2 Be7 9. Qe1 Bb5 10. d3 {Controls c4+e4} Qd6
11. a4 {White threatens to win material: a4xb5} Ba6 12. Nbd2 h6 {Prevents
intrusion on g5} 13. Ne5 Nh5 (13... O-O 14. Rf3 $14) 14. b4 (14. Ndf3 c5 $16)
14... c5 {Black threatens to win material: c5xb4} (14... Qxb4 15. Ba3 Qc3 16.
Bxe7 Kxe7 17. Qh4+ Nf6 18. Ndf3 $11) 15. Qd1 {White threatens to win material:
Qd1xh5} Nf6 16. bxc5 bxc5 17. Ba3 Nd7 {Black threatens to win material: Nd7xe5}
18. Ndf3 Qc7 (18... O-O 19. Qe1 $11) 19. Nxd7 Qxd7 20. Ne5 Qc7 21. Qg4 {
White threatens to win material: Qg4xg7} Bf6 22. Rfe1 h5 {Black threatens to
win material: h5xg4} 23. Qf3 Rc8 24. e4 Bb7 (24... d4 25. Nc4 $11) 25. exd5
Bxd5 26. Qe2 g6 (26... h4 27. Rab1 $11) 27. c4 {White threatens to win
material: c4xd5} Bb7 28. Rab1 Be7 $4 {solves nothing} (28... Bc6 29. Bxc5 Bxg2
30. Kxg2 Qxc5 31. Rb7 $14) 29. Qb2 $4 {there were better ways to keep up the
pressure} (29. Nxf7 $142 {and White takes home the point} O-O 30. f5 $18) 29...
Ba8 $16 30. Qb5+ (30. Nc6 O-O 31. Nxe7+ Qxe7 $16) 30... Kf8 $14 {Black loses
the right to castle} 31. Bc1 (31. Bb2 $5 {should be considered} Kg8 32. Nxg6
fxg6 33. Bxh8 Kxh8 34. Rxe6 $11) 31... Kg7 $11 32. Bd2 (32. Bb2 f6 33. Qa6 Bd6
34. Nxg6 Kxg6 35. Rxe6 Bc6 36. Rxf6+ Kh7 $17) 32... Rb8 (32... f6 33. Nf3 Qd6
34. Qb2 $17) 33. Qd7 (33. Qa6 $5 $11 {has some apparent merit}) 33... Qxd7 $17
34. Nxd7 Rxb1 35. Rxb1 Bc6 {Black threatens to win material: Bc6xd7. Black
forks: a4+d7} (35... Rd8 $5 36. Ne5 f6 $15) 36. Ne5 $11 {White threatens to
win material: Ne5xc6} Bxa4 (36... Ba8 $142 $5 $11 {would keep Black in the game
}) 37. Ra1 $16 Bc2 38. Rxa7 Kf6 $4 {strolling merrily down the path to disaster
} (38... Re8 $142 $16) 39. Bc3 $18 Re8 40. Nc6+ Kf5 41. Nxe7+ Kxf4 42. Bd2+ Ke5
43. Nc6+ Kf6 44. Bc3+ Kg5 (44... e5 {is one last hope} 45. Rc7 Bxd3 46. Nxe5
Bb1 $18) 45. Rxf7 Bxd3 (45... Kh6 {a fruitless try to alter the course of the
game} 46. Bg7+ Kh7 47. Bf6+ Kg8 48. Rg7+ Kf8 49. Ne5 Rb8 50. Rh7 Rb1+ 51. Kf2
Rf1+ 52. Kxf1 Bxd3+ 53. Kg1 Kg8 54. Rh8#) 46. Bd2+ Kh4 47. Rf4+ Kg5 48. Rf3+
Kh4 49. Rxd3 (49. Rg3 Bxc4 50. Bg5#) 49... e5 (49... Kg4 {cannot change what
is in store for ?} 50. Rf3 h4 51. Ne5+ Kh5 52. g4+ hxg3 53. Rxg3 Kh4 54. Kg2
Rh8 55. Rh3#) 50. Rd5 (50. Rg3 e4 51. Bg5#) 50... g5 51. Nxe5 Rxe5 52. Rxe5 Kg4
53. h3+ Kg3 54. Rf5 (54. Rf5 g4 55. Be1#) (54. Bxg5 h4 55. Re3#) 1-0

[Event "SapporoSummer2018"]
[Site "?"]
[Date "2018.07.28"]
[Round "2.4"]
[White "YOSHII, Yukihiko"]
[Black "SUGIMOTO, Koichi"]
[Result "0-1"]
[ECO "D15"]
[WhiteElo "1844"]
[BlackElo "1966"]
[Annotator "Fritz 15 (30s)"]
[PlyCount "56"]

{[%mdl 8192] D15: Slav Defence: 4 Nc3 a6 and gambit lines after 4 Nc3 dxc4} 1.
c4 c6 2. d4 d5 3. cxd5 cxd5 4. Nc3 Nf6 5. Nf3 Nc6 6. e3 a6 7. a4 $146 (7. Be2
Bg4 8. O-O e6 9. Bd2 Bd6 10. Rc1 O-O 11. h3 Bh5 12. a3 Rc8 13. b4 Ne4 14. Ne1
Bxe2 15. Nxe2 Bb8 16. Nd3 Qd6 17. g3 b6 18. Be1 Qd7 19. a4 Nd6 20. Qb3 Nc4 21.
Nb2 Nxb2 {Sahidi,S (2315)-Komliakov,V (2416) Senica 2015 1/2-1/2 (35)}) (7. Ne5
e6 8. f4 Bd6 9. Bd3 Ne7 10. O-O b5 11. Bd2 Bb7 12. Rc1 O-O 13. Bb1 Rc8 14. Qe2
Rc7 15. Nd1 Rxc1 16. Bxc1 Ne4 17. Nf2 Qa5 18. Nf3 f6 19. Nd3 b4 20. Bd2 Qb6 21.
Rc1 a5 {Matlak,M (2465)-Dreev,A (2650) Czechia 1995 0-1 (59)}) (7. Bd3 Bg4 8.
O-O e6 9. h3 Bh5 10. Bd2 Bd6 11. Rc1 O-O 12. Na4 Bg6 13. Bxg6 hxg6 14. a3 Ne4
15. Nc3 Nxc3 16. Bxc3 Rc8 17. Qe2 Na5 18. Bxa5 Qxa5 19. Qd2 Qxd2 20. Nxd2 Rfd8
21. Nb3 b6 {Maksimovic,S (2198)-Djingarova,E (2234) Sunny Beach 2014 1/2-1/2 
(32)}) (7. a3 Bg4 8. Be2 e6 9. O-O Bd6 10. b4 O-O 11. Bb2 Rc8 12. Na4 Ne4 13.
Ne5 Bxe2 14. Qxe2 b5 15. Nxc6 Rxc6 16. Nc5 Bb8 17. a4 Nd6 18. axb5 axb5 19. Ra8
Nc4 20. Rfa1 Qd6 21. g3 Rfc8 {Jimenez Clavero,M (2199)-Rodriguez Marquez,A 
(2156) Malaga 1985 1-0 (41)}) (7. Bd2 Bg4 $11) 7... Bg4 8. Be2 e6 9. O-O Bd6
10. h3 Bh5 11. b3 O-O 12. Bb2 Rc8 13. Rc1 Qb6 14. g4 {White threatens to win
material: g4xh5} Bg6 15. Nd2 Ne4 (15... h6 $142 $5 $17) 16. Ncxe4 $11 dxe4 {
Black has new doubled pawns: e4+e6} 17. Nc4 Qd8 18. Nxd6 {White forks: b7+c8}
Qxd6 {White has the pair of bishops} 19. Bc4 Rfd8 20. Qe2 Qb4 21. Bc3 {White
threatens to win material: Bc3xb4} Qe7 22. Rfd1 Qh4 {Black threatens to win
material: Qh4xh3} 23. Kg2 h5 24. Rh1 Ne7 25. f4 (25. Ba5 $142 $5 {and White
can hope to survive} Re8 26. Bb4 $11) 25... exf3+ $17 26. Qxf3 Qg5 27. Qf4 $4 {
further deteriorates the position} (27. Kf2 $142 $17) 27... Qxf4 $19 28. exf4
Be4+ (28... Be4+ 29. Kg1 Bxh1 30. Kxh1 Nd5 $19) 0-1

[Event "SapporoSummer2018"]
[Site "?"]
[Date "2018.07.28"]
[Round "2.5"]
[White "TAKEUCHI, Hiroshi"]
[Black "ISHII, Hibiki"]
[Result "0-1"]
[ECO "D00"]
[Annotator "Fritz 15 (30s)"]
[PlyCount "64"]

{[%mdl 8192] D00: 1 d4 d5: Unusual lines} 1. d4 d5 2. e3 Bf5 3. Bb5+ $146 (3.
c4 e6 4. cxd5 (4. Qb3 Nc6 5. c5 Nge7 6. Nf3 Rb8 7. Bd2 Ng6 8. Qa4 Be7 9. b4 Bf6
10. Nc3 O-O 11. b5 Nce7 12. h4 h5 13. Be2 Bg4 14. g3 Nf5 15. Qd1 Re8 16. Kf1 c6
17. Ng1 Bxe2+ 18. Ngxe2 e5 {Chipkin,L (2180)-Salman,J (2220) Long Island 1997
1-0 (39)}) 4... exd5 5. Qb3 Nc6 6. Qxb7 Bb4+ 7. Nc3 Nge7 8. Bd2 a6 9. Nxd5
Bxd2+ 10. Kxd2 Rb8 11. Nxc7+ Kf8 12. Ne6+ fxe6 13. Qxa6 Rxb2+ 14. Kc1 Nb4 15.
Qa4 Rc2+ 16. Kd1 Ned5 17. Ke1 Qc7 {Chipkin,L (2240)-Dolgitser,K (2260) Mineola
1994 0-1}) (3. Bd3 Bxd3 4. Qxd3 (4. cxd3 Nf6 5. Qb3 Qc8 6. Nc3 e6 7. Nf3 Be7 8.
e4 c6 9. O-O O-O 10. Bf4 Na6 11. Rac1 b6 12. a3 Qb7 13. Rfe1 Rfd8 14. Qc2 Rac8
15. e5 Nd7 16. b4 Nc7 17. Rb1 Nb5 18. Rb3 Qa6 {Oddone,C (2231)-Izquierdo,D 
(2288) Montevideo 2009 0-1 (50)}) 4... e6 (4... c6 5. Nf3 e6 6. c4 Nd7 7. O-O
Bd6 8. Qb3 Qc7 9. Nc3 Ngf6 10. cxd5 exd5 11. Bd2 Ne4 12. h3 Ndf6 13. Nxe4 Nxe4
14. Bb4 O-O-O 15. Bxd6 Rxd6 16. Qa4 a6 17. Qc2 g5 18. Nd2 Re8 19. Rae1 {
Eilers,S (2320)-Schlindwein,R (2450) Gladenbach 1996 0-1 (39)}) 5. Qb3 b6 6.
Nf3 c6 7. c4 Bd6 8. Nc3 Nf6 9. Bd2 O-O 10. O-O Qe7 11. Rfc1 Nbd7 12. cxd5 exd5
13. Rc2 Rad8 14. a4 Nb8 15. a5 b5 16. Be1 Rfe8 17. Na2 Ne4 {Abdulla,A (2514)
-Minhazuddin,A (2325) Dhaka 2008 1/2-1/2 (44)}) (3. c4 c6 $11) 3... c6 {
Black threatens to win material: c6xb5} 4. Ba4 (4. Bd3 e6 $11) 4... a5 5. c3
Nf6 6. Ne2 Qc7 7. Ng3 {White threatens to win material: Ng3xf5} Bg6 8. O-O e5 (
8... e6 $5 $15 {should be examined more closely}) 9. dxe5 Qxe5 10. Nd2 {
Loses material} (10. f4 Qc7 11. f5 Bd6 12. fxg6 hxg6 $11) 10... Bd6 {White's
piece can't move: c1} (10... Be7 11. f4 Qxe3+ 12. Kh1 $14) 11. Nf3 {White
threatens to win material: Nf3xe5} (11. e4 $5 {must definitely be considered}
Bxe4 12. f3 $14) 11... Qe7 $15 12. Nh4 Nbd7 (12... Bxg3 13. hxg3 Nbd7 14. Nxg6
hxg6 15. f3 $17) 13. Nxg6 (13. Ngf5 $142 $5 {deserves consideration} Qf8 14. e4
$14) 13... hxg6 $15 14. f4 Ne4 15. Nxe4 Qxe4 {White has a cramped position} 16.
Bc2 {White threatens to win material: Bc2xe4} Qe7 17. Qf3 f5 18. h3 O-O-O 19.
Bd2 Nf6 20. b4 (20. Qg3 Rh6 $15) 20... axb4 21. cxb4 Bxb4 22. Bxb4 Qxb4 {
Black has a new protected passed pawn: c6} 23. Qe2 (23. Qg3 Qd2 24. Rf2 Qc3 $17
) 23... Ne4 (23... d4 $142 $17) 24. Rab1 $4 {causes further problems for ?} (
24. Bxe4 dxe4 25. Qf2 $17) 24... Qe7 (24... Qd2 {keeps an even firmer grip} 25.
Qd3 Qxd3 26. Bxd3 $19) 25. a4 $4 (25. Bxe4 $142 {this is the best way to fight
back} Qxe4 26. Rb3 $11) 25... Nc3 (25... Ng3 $142 {might be the shorter path}
26. Qd3 Nxf1 27. Kxf1 Rhe8 $19) 26. Qd3 (26. Qd2 Nxb1 27. Rxb1 $19) 26... Nxb1
27. Rxb1 Rhe8 28. Kf2 Kc7 (28... d4 {keeps an even firmer grip} 29. exd4 Qh4+
30. Kg1 Re1+ 31. Rxe1 Qxe1+ 32. Qf1 Qe3+ 33. Qf2 Qxf2+ 34. Kxf2 Rxd4 35. Ke3
$19) 29. a5 (29. Qb3 Qc5 $19) 29... Ra8 (29... Qc5 {makes it even easier for
Black} 30. Qb3 Ra8 31. Qxb7+ Kd6 32. Qb4 Rxa5 33. Qxc5+ Rxc5 34. Ba4 $19) 30.
Qb3 $2 (30. Qc3 Kb8 $19) 30... Ra7 (30... Qc5 $5 {might be the shorter path}
31. Bd1 Rxa5 32. Qxb7+ Kd6 33. Rb3 $19) 31. Qb6+ (31. Qc3 g5 32. fxg5 Qxg5 $19)
31... Kb8 32. Qxc6 (32. Ra1 $19 {hoping against hope}) 32... Qxe3+ (32... Qxe3+
33. Kf1 Qxf4+ 34. Kg1 Re1+ 35. Rxe1 bxc6 36. Bxf5 gxf5 37. Re8+ Kc7 38. Re7+
Kd6 39. Rxa7 Qd4+ 40. Kf1 Qxa7 41. Ke2 d4 42. Kd3 Qxa5 43. Ke2 Qc3 44. Kf1 Qe3
45. h4 d3 46. h5 d2 47. g3 d1=Q+ 48. Kg2 Qee2+ 49. Kh3 Qh1#) 0-1

[Event "SapporoSummer2018"]
[Site "?"]
[Date "2018.07.28"]
[Round "3.1"]
[White "KIKUCHI, Akira"]
[Black "WATANABE, Katsumi"]
[Result "1/2-1/2"]
[ECO "D02"]
[WhiteElo "1763"]
[BlackElo "1672"]
[Annotator "Fritz 15 (30s)"]
[PlyCount "55"]

{D02: 1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4} 1. d4
d5 2. Bf4 Nf6 3. Nf3 e6 4. e3 Be7 5. c3 (5. Be2 O-O 6. h3 Nbd7 7. O-O c5 8. c3
b6 9. a4 Bb7 10. Ne5 Nxe5 11. dxe5 {1/2-1/2 (11) Mrkonjic,N (2376)-Del Rey,D 
(2379) Novi Sad 2014}) 5... O-O $146 (5... b6 6. Nbd2 Bb7 7. h3 Nbd7 8. a4 a6
9. a5 O-O 10. Bd3 c5 11. axb6 Qxb6 12. Ra2 a5 13. O-O Ba6 14. Qe2 Bxd3 15. Qxd3
Rfc8 16. Rfa1 Bd8 17. Qc2 h6 18. Qb3 Qc6 19. Ra4 Ra7 20. Qd1 {Kamsky,G (2741)
-Riazantsev,A (2708) Khanty-Mansiysk 2013 1-0 (55)}) 6. Bd3 Nbd7 7. Nbd2 b6 8.
Ne5 Bb7 9. Qe2 c5 10. g4 c4 {This push gains space} 11. Bc2 b5 12. g5 Ne4 13.
Nxe4 dxe4 14. h4 Nxe5 15. Bxe5 f6 16. gxf6 Bxf6 17. Bxf6 Rxf6 18. O-O-O Qa5 {
Black threatens to win material: Qa5xa2} 19. Kb1 Raf8 20. Qg4 {[%cal Rc2e4,
Rg4e4,Gb7e4] The isolani on e4 becomes a target} (20. Rh2 Bd5 $11) 20... Qb6
21. h5 Qc6 (21... b4 $5 22. cxb4 Qxb4 $17) 22. Rdg1 {White has a mate threat}
R8f7 23. h6 g6 24. Qg3 (24. Rf1 a5 $11) 24... Rxf2 $15 25. Qb8+ {White forks:
a7} Bc8 (25... Rf8 $5 26. Qe5 R2f7 $15) 26. Qe5 $11 {White threatens to win
material: Qe5xe4} Bb7 27. Qb8+ {Twofold repetition} Bc8 28. Qe5 1/2-1/2

[Event "SapporoSummer2018"]
[Site "?"]
[Date "2018.07.28"]
[Round "3.2"]
[White "SUGIMOTO, Koichi"]
[Black "KANAMARU, Tomoji"]
[Result "1-0"]
[ECO "A80"]
[WhiteElo "1966"]
[BlackElo "1666"]
[Annotator "Fritz 15 (30s)"]
[PlyCount "109"]

{A80: Dutch Defence: Unusual White second moves} 1. d4 f5 2. Nc3 Nf6 3. Bg5 e6
4. e4 (4. g4 Bb4 5. Qd3 d5 6. gxf5 exf5 7. Bh3 h6 8. Bd2 O-O 9. Nf3 Ne4 10. Rg1
Kh7 11. O-O-O Bxc3 12. bxc3 Qe7 13. Rdf1 Qa3+ 14. Kd1 Qxa2 15. Bc1 Bd7 16. Ne5
Ba4 17. f3 Nd6 18. Rg2 Bb5 {Buckley,G (2385)-Mellado Trivino,J (2470) Mondariz
1996 0-1 (40)}) 4... h6 (4... Be7 5. Bxf6 Bxf6 6. e5 Be7 7. Bd3 O-O 8. Nf3 b6
9. O-O Bb7 10. Qe2 Bxf3 11. Qxf3 Nc6 12. Ne2 Bg5 13. Bb5 Ne7 14. c4 a6 15. Ba4
b5 16. cxb5 axb5 17. Bxb5 Rb8 18. a4 c6 19. Bc4 {Oreopoulos,K (2549)-Karup,E 
(2162) Dos Hermanas 2004 1-0 (45)}) 5. Bxf6 Qxf6 6. Nf3 $146 (6. exf5 exf5 7.
Qe2+ Qe6 8. O-O-O Bd6 9. Qh5+ g6 10. Qh3 a6 11. Nf3 Kf8 12. Re1 Qf7 13. Ne5
Bxe5 14. dxe5 b5 15. Qf3 Ra7 16. Nd5 Nc6 17. e6 Qg7 18. e7+ Kf7 19. g4 d6 20.
gxf5 Bxf5 {Stefanova,A (2444)-Lanchava,T (2297) Groningen 1999 1-0}) 6... d6 {
Covers e5} (6... Nc6 7. exf5 d5 8. Bd3 $11) 7. exf5 $16 Qxf5 8. Bd3 Qg4 9. h3
Qh5 10. g4 {White threatens to win material: g4xh5} (10. Nb5 Kd8 $16) 10... Qf7
$14 11. Nh4 {Black has a cramped position} Qf6 12. Ng6 Rg8 13. Ne4 {White
threatens to win material: Ne4xf6} (13. Qe2 $5 $16) 13... Qf7 $11 14. Qe2 {
Black has a cramped position} Bd7 (14... Nc6 $5 $11) 15. O-O-O (15. d5 Kd8 16.
dxe6 Bxe6 $16) 15... Nc6 (15... Kd8 16. Nc3 Nc6 $14) 16. Qe3 {White has a king
attack} (16. d5 $142 $5 Nb4 17. dxe6 Nxd3+ 18. Rxd3 Bxe6 19. Nxf8 Rxf8 20. Rxd6
Qf4+ 21. Rd2 $16) 16... O-O-O $11 {Black castles and improves king safety} 17.
h4 {Black has a cramped position} (17. Nc3 Kb8 $11) 17... Nb4 {Black threatens
to win material: Nb4xa2} 18. Kb1 (18. h5 Nxa2+ 19. Kb1 Nb4 $15) 18... Kb8 (
18... e5 19. d5 Kb8 20. h5 Nxd5 21. Qg3 $17) 19. h5 {White wins space} e5 20.
b3 Nxd3 (20... Bxg4 $142 $5 21. Rdg1 Bf5 $17) 21. Rxd3 $11 exd4 22. Rxd4 Be7
23. f3 {Controls g4} Rge8 24. Qd3 Bf6 (24... a6 25. Rd5 $11) 25. Nxf6 Qxf6 26.
Rf4 Qe6 27. Qd4 {White threatens to win material: Qd4xg7} Qg8 28. Rd1 Re2 29.
Rd2 Rxd2 30. Qxd2 Re8 31. Kb2 {White king safety dropped} Bc6 32. Qd3 b6 33.
Qc3 {White threatens to win material: Qc3xc6} Kb7 {Black king safety dropped}
34. Rc4 {White threatens to win material: Rc4xc6} Qd5 35. f4 (35. Nh4 b5 36.
Rd4 Qe5 $11) 35... Re4 (35... b5 36. Rd4 Qh1 37. a4 bxa4 38. f5 $17) 36. Rxe4
Qxe4 37. Qxg7 Qe2 38. Ne7 Be4 {Black threatens to win material: Be4xc2} 39. Qc3
Qxg4 {Black forks: h5+f4.} 40. Qd4 (40. f5 $142 $11 {and White hangs on}) 40...
Qxf4 $17 41. Qh8 Qe5+ 42. Qxe5 dxe5 43. Ng6 Bf3 44. Nxe5 Bxh5 45. Kc3 Be8 46.
Kd4 c5+ 47. Kc4 (47. Ke4 $142 $5 $17) 47... Kc7 48. Kd5 h5 49. Ke4 Kd6 (49...
h4 50. Kf4 h3 51. Kg3 $19) 50. c3 h4 51. Nc4+ Ke7 52. Kf4 Bd7 53. a3 $2 (53.
Ne5 $142 Ke6 54. Nf3 $19) 53... Be6 54. Nd2 Kf6 (54... h3 $142 $5 {makes it
even easier for Black} 55. Kg3 Kd6 56. b4 $19) 55. b4 1-0

[Event "SapporoSummer2018"]
[Site "?"]
[Date "2018.07.28"]
[Round "3.3"]
[White "KOBAYASHI, Katsuhiko"]
[Black "BRINKMANN, Leonard"]
[Result "0-1"]
[ECO "B07"]
[WhiteElo "1455"]
[BlackElo "1636"]
[Annotator "Fritz 15 (30s)"]
[PlyCount "76"]

{[%mdl 8192] B07: Pirc Defence: Miscellaneous Systems} 1. e4 d6 2. d4 Nf6 3.
Nc3 Nbd7 {Black has a cramped position. Black's pieces can't move: c8+f8} 4.
Bb5 $146 (4. Nf3 c6 5. a4 Qc7 6. Be2 e5 7. O-O Be7 8. Re1 O-O 9. h3 Re8 10. Bg5
Nf8 11. d5 h6 12. Be3 Ng6 13. Bf1 Bd7 14. Nd2 Rec8 15. a5 cxd5 16. exd5 Nh7 17.
Bd3 Nhf8 18. Qh5 Qd8 {Leuba,D (2295)-Summermatter,D (2320) Suhr 1991 0-1 (51)})
(4. h3 e5 5. g4 h6 6. Bg2 exd4 7. Qxd4 g6 8. Be3 Bg7 9. Qd2 Nb6 10. b3 d5 11.
Rd1 c6 12. Nge2 Be6 13. Nf4 g5 14. Nxe6 fxe6 15. O-O Qe7 16. exd5 Nbxd5 17.
Nxd5 Nxd5 18. c4 Nxe3 {Topalov,V (2635)-Izeta Txabarri,F (2505) Madrid 1993
1-0 (38)}) (4. Nge2 e5 5. f3 Be7 (5... c6 6. Be3 b5 7. Qd2 b4 8. Nd1 d5 9. Nf2
Be7 10. O-O-O O-O 11. Kb1 Qc7 12. Ng3 Re8 13. Nf5 Bf8 14. g4 dxe4 15. fxe4 exd4
16. Bf4 Ne5 17. Nd3 Bxf5 18. exf5 Bd6 19. Bxe5 Bxe5 20. Nxe5 {Loncar,R (2440)
-Manouck,T (2305) Forli 1993 1-0}) 6. Be3 c6 7. Qd2 O-O 8. O-O-O b5 9. g4 Qa5
10. Ng3 Nb6 11. Nf5 Bxf5 12. gxf5 b4 13. Nb1 Qxa2 14. Qxb4 exd4 15. Qxd4 Rab8
16. b3 Nfd5 17. exd5 Bf6 18. Qxf6 gxf6 {Mamedov,N (2295)-Bayramov,V (2290)
Baku 1998 0-1}) (4. Nf3 e5 $14) 4... c6 $11 {Consolidates d5} 5. Ba4 (5. Bd3 e5
6. Nf3 exd4 7. Nxd4 g6 $11) 5... b5 {Black threatens to win material: b5xa4} 6.
Bb3 {Black has a cramped position. Black's piece can't move: f8} b4 {Black
threatens to win material: b4xc3} 7. Nce2 Nxe4 8. Nf3 Rb8 {Black's piece can't
move: f8} (8... d5 9. Ba4 Qb6 10. O-O $15) 9. d5 {White threatens to win
material: d5xc6} (9. O-O e6 $11) 9... c5 {Black's piece can't move: f8} (9...
Bb7 10. dxc6 Bxc6 11. O-O $15) 10. O-O g6 11. a3 a5 12. Ng5 (12. axb4 $5 {
might be a viable alternative} axb4 13. Re1 $11) 12... Nxg5 $15 13. Bxg5 Bg7 {
Black is behind in development.} 14. Rb1 O-O 15. Re1 Nf6 16. Ng3 Ba6 17. axb4
c4 {Black threatens to win material: c4xb3} 18. Ba2 (18. Ba4 $5 Bb5 19. Bxb5
Rxb5 20. Bxf6 Bxf6 21. Qe2 $17) 18... axb4 $17 19. Qe2 (19. Ra1 $5 $17) 19...
Qc7 $19 20. Qxe7 $4 {the final mistake, not that it matters anymore.} (20. Qd2
$142 $19) 20... Qxe7 21. Rxe7 b3 22. cxb3 (22. Ra1 Nxd5 23. Bb1 Nxe7 24. cxb3
f6 25. Rxa6 fxg5 26. bxc4 Rxb2 $19) 22... cxb3 23. Bxb3 Rxb3 24. Ra7 Bd3 25.
Rba1 (25. Rd1 {is no salvation} Re8 $19) 25... h6 (25... Rxb2 {makes it even
easier for Black} 26. Rd1 Bc2 27. Rda1 $19) 26. Bc1 Bc4 27. Bf4 Bxd5 28. Bxd6
Re8 29. Ba3 h5 (29... Ng4 {and Black can already relax} 30. Ra5 Bc6 31. Rc1 $19
) 30. Rc1 (30. h3 {does not solve anything} Rd3 $19) 30... h4 (30... Ng4 {
keeps an even firmer grip} 31. Ra5 Rd3 32. Bc5 $19) 31. Nf1 Be6 32. Ne3 (32.
Nd2 {doesn't do any good} Rd3 33. Nf3 Nd5 $19) 32... Ng4 (32... Nd5 $5 {
might be the shorter path} 33. Nxd5 Bxd5 34. Ra5 $19) 33. Nxg4 Bxg4 34. Rb1 (
34. Ra4 {hardly improves anything} Bf5 $19) 34... Bf5 (34... h3 {seems even
better} 35. g3 $19) 35. Rd1 (35. Rf1 {doesn't improve anything} h3 $19) 35...
Bxb2 (35... Rd3 {and Black can already relax} 36. Ra1 $19) 36. Bc5 Rd3 37. Rb1
(37. Rf1 $19 {is still a small chance}) 37... Rd5 38. Rf1 Rxc5 (38... Rxc5 39.
Raa1 Bxa1 40. Rxa1 Rce5 $19) 0-1

[Event "SapporoSummer2018"]
[Site "?"]
[Date "2018.07.28"]
[Round "3.4"]
[White "NISHIMORI, Toshiyuki"]
[Black "ISHII, Hibiki"]
[Result "1-0"]
[ECO "B98"]
[WhiteElo "1823"]
[Annotator "Fritz 15 (30s)"]
[PlyCount "51"]

{[%mdl 8192] B98: Sicilian Najdorf: 6 Bg5 e6 7 f4 Be7, sidelines} 1. e4 c5 2.
Nf3 d6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 e6 6. Bc4 Nf6 7. Bg5 Be7 8. f4 (8. Qf3 Qa5
9. Bxf6 Bxf6 10. Nde2 Nd7 11. Bb3 Nc5 12. O-O Bd7 13. Rad1 Qc7 14. a3 Qb6 15.
Qe3 O-O-O 16. Rb1 Bc6 17. Ba2 Kc7 18. Qf3 Bxc3 19. Nxc3 f5 20. Qe3 Nxe4 21.
Nxe4 Bxe4 22. Bxe6 Qxe3 {Horvath,T (2427)-Shengelia,D (2490) Austria 2007 1/
2-1/2 (66)}) 8... b5 $146 (8... h6 9. Bxf6 Bxf6 10. Qd3 Nd7 11. O-O-O Nc5 12.
Qe2 Qc7 13. Kb1 Bd7 14. Rhe1 O-O 15. Bb3 b5 16. e5 dxe5 17. fxe5 Be7 18. Ne4
Qxe5 19. Nxc5 Qxc5 20. Nf3 Rfd8 21. Rxd7 Rxd7 22. Ne5 Rd6 23. Nxf7 {Ivekovic,Z
(2320)-Grandelius,N (2562) Athens 2012 0-1}) (8... Qc7 9. Qe2 h6 10. Bxf6 Bxf6
11. O-O-O O-O 12. Rhe1 b5 13. Bb3 b4 14. Na4 Bd7 15. Nf3 Qa5 16. e5 Bd8 17.
exd6 Bxa4 18. Bxe6 Nd7 19. Bc4 Nb6 20. Ne5 Bf6 21. Bd3 Bb5 22. Kb1 Na4 23. Qf3
{Wieferig,W (2233)-El Moumen,Y (2250) Cologne 2006 0-1}) 9. Bb3 b4 10. Ba4+ (
10. Bxf6 Bxf6 11. Na4 Bb7 $15) 10... Bd7 $17 11. Bxd7+ Qxd7 12. Bxf6 Bxf6 13.
Nce2 e5 {Black threatens to win material: e5xd4} (13... Qb7 $142 $5 $15 {
and Black is still in the game}) 14. Nf5 $14 {White threatens to win material:
Nf5xd6} O-O 15. fxe5 {White forks: d6+f6} (15. Qxd6 Qxd6 16. Nxd6 exf4 $14)
15... Bxe5 16. O-O (16. Qd5 Ra7 $11) 16... Bxb2 17. Rb1 Bc3 $4 {Black has let
it slip away} (17... Be5 $142 {was much better} 18. Rxb4 Nc6 $11) 18. Nxc3 $18
bxc3 19. Nxd6 (19. Qd5 $5 Ra7 20. Nxg7 Qc6 $18) 19... Qa7+ (19... Nc6 20. Rb7
Qe6 21. Qd5 Qxd5 22. exd5 $14) 20. Kh1 $16 Rd8 $4 {another step towards the
grave} (20... Qc5 $142 21. Rf5 Qc6 $16) 21. e5 (21. Qd5 {seems even better}
Rxd6 22. Qxd6 Nd7 $18) 21... Qc5 (21... Nc6 {desperation} 22. Qd5 Qc7 $18) 22.
Qf3 Qa7 (22... Nc6 {is the last straw} 23. Qxf7+ Kh8 $18) 23. Rb7 Qxb7 24. Nxb7
Rd7 25. Nc5 Rda7 (25... Kh8 {doesn't get the bull off the ice} 26. Nxd7 Nc6 27.
Qxc6 Re8 28. Rxf7 Rd8 29. Qd6 Rg8 30. Nf8 a5 31. Qh6 Rxf8 32. Rxf8#) 26. e6 (
26. e6 f5 27. Qd5 Nc6 28. e7+ Kh8 29. Qxc6 h6 30. e8=Q+ Rxe8 31. Qxe8+ Kh7 32.
Rxf5 Ra8 33. Qxa8 Kg6 34. Qe4 a5 35. Re5+ Kf7 36. Qf5+ Kg8 37. Re8#) 1-0

[Event "SapporoSummer2018"]
[Site "?"]
[Date "2018.07.28"]
[Round "3.5"]
[White "TAKEUCHI, Hiroshi"]
[Black "YOSHII, Yukihiko"]
[Result "1-0"]
[ECO "E14"]
[BlackElo "1666"]
[Annotator "Fritz 15 (30s)"]
[PlyCount "53"]

{[%mdl 8192] E14: Queen's Indian: Classical Variation (4 e3)} 1. d4 Nf6 2. c4
d5 3. e3 b6 4. Nc3 e6 5. Nf3 Bb7 6. cxd5 exd5 7. Bd3 Be7 8. O-O O-O 9. Qc2 h6
$146 {Covers g5} (9... c5 10. dxc5 (10. Ne5 Nc6 11. Nxc6 Bxc6 12. dxc5 bxc5 13.
Ne2 (13. b3 Bd6 14. Bb2 d4 15. exd4 cxd4 16. Ne4 Rc8 17. Nxd6 Qxd6 18. Qd1 h5
19. f3 Nd5 20. Bxd4 Nf4 21. Bc4 Rcd8 22. Be3 Qg6 23. Bxf4 Rxd1 24. Raxd1 Qf5
25. Bg3 Qg5 26. Rd4 Re8 27. Rfd1 Qa5 {Kraidman,Y (2445)-Balshan,A (2430) Ramat
Hasharon 1979 1-0 (84)}) 13... Qb6 14. Ng3 Rfe8 15. Bd2 Rab8 16. Rab1 g6 17. b3
a5 18. Rfc1 Red8 19. Be1 Qa7 20. Be2 Bd7 21. a4 Be6 22. Qc3 Rb4 23. Qc2 Rb7 24.
Bb5 Ne8 {Forintos,G (2490)-Martz,W (2385) Lone Pine 1975 0-1 (48)}) 10... bxc5
11. Rd1 Nbd7 12. Qe2 (12. b3 Re8 13. Ne2 Rc8 14. Bb2 Qb6 15. Ne5 Nf8 16. Bf5
Rcd8 17. Ng3 Ne6 18. Rac1 Ba8 19. Ng4 Nxg4 20. Bxg4 Bf8 21. Nh5 d4 22. Bf5 h6
23. Qe2 dxe3 24. fxe3 Rxd1+ 25. Rxd1 Nd4 26. Qg4 Rxe3 {Wronn,B (2248)-Chen,T 
(2277) Germany 2008 0-1 (39)}) 12... Re8 13. b3 d4 14. Na4 Bf8 15. Ba6 Qc7 16.
Bxb7 Qxb7 17. Qd3 dxe3 18. Bxe3 Rac8 19. Rac1 a6 20. Rc4 Rc6 21. Rdc1 Rec8 22.
h3 Qb5 23. Bf4 h6 24. Nd2 {Meleghegyi,C (2395)-Sallay,R (2300) Budapest 1973 1/
2-1/2 (42)}) 10. Bd2 Nbd7 11. Rfe1 c5 12. b3 Rc8 13. Rac1 cxd4 14. Nxd4 {
A sound move.} Ne4 15. f3 Nxd2 16. Qxd2 a6 {Secures b5} 17. Nce2 Nf6 (17...
Rxc1 18. Rxc1 Re8 19. Nf5 $11) 18. Ng3 (18. Rxc8 Qxc8 19. Nf5 Re8 $14) 18... g6
{Prevents intrusion on f5} 19. Rxc8 Qxc8 20. e4 $2 (20. Rc1 $5 Qd7 21. b4 $11)
20... Bc5 {Black threatens to win material: Bc5xd4} (20... dxe4 21. Nxe4 Bxe4
22. Bxe4 Rd8 23. Bxg6 Rxd4 24. Bxf7+ Kg7 $19) 21. Qb2 $4 (21. Bb1 $142 {
was a good chance to save the game} dxe4 22. b4 $17) 21... dxe4 $19 22. b4 exd3
(22... Bxd4+ $142 {and Black wins} 23. Qxd4 exd3 24. Qxf6 d2 $19) 23. bxc5 Qxc5
24. Kh1 (24. Rc1 $142 Qe5 25. Rd1 $19) 24... Rd8 25. Ne6 (25. Nb3 Qb4 26. Rd1
Re8 $19) 25... d2 (25... Qe7 $5 {seems even better} 26. Ne4 d2 27. Nxd2 $19)
26. Rd1 (26. Rf1 fxe6 27. Qxf6 $19) 26... Rd6 (26... Qe7 $142 {and the rest is
a matter of technique} 27. Qxb6 Rd6 $19) 27. Nxc5 $18 (27. Nxc5 bxc5 28. Qxb7
$18) 1-0

[Event "SapporoSummer2018"]
[Site "?"]
[Date "2018.07.29"]
[Round "4.1"]
[White "WATANABE, Katsumi"]
[Black "SUGIMOTO, Koichi"]
[Result "1-0"]
[ECO "D15"]
[WhiteElo "1672"]
[BlackElo "1966"]
[Annotator "Fritz 15 (30s)"]
[PlyCount "109"]

{[%mdl 8192] D15: Slav Defence: 4 Nc3 a6 and gambit lines after 4 Nc3 dxc4} 1.
d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 a6 5. Nc3 b5 6. c5 Nbd7 7. b4 g6 8. Bb2 (8. a4
Bb7 9. Bb2 Bg7 10. Qc2 O-O 11. Be2 Ne8 12. O-O Nc7 13. Rfd1 Re8 14. axb5 axb5
15. Rxa8 Bxa8 16. h3 Bb7 17. Bf1 Qb8 18. g3 Bc8 19. Bg2 Na6 20. Qb3 e5 21. dxe5
Nxe5 22. Nxe5 Qxe5 {Ponomariov,R (2744)-Gashimov,V (2733) Warsaw 2010 1-0 (40)}
) 8... Bg7 9. Bd3 Qc7 $146 (9... O-O 10. O-O a5 11. a3 Qc7 12. h3 Ne8 13. e4
dxe4 14. Bxe4 axb4 15. axb4 Rxa1 16. Qxa1 Ndf6 17. Bc2 Be6 18. Ne5 Nd5 19. Nxd5
Bxd5 20. Qa6 Bxe5 21. dxe5 Ng7 22. Ra1 Ne6 23. Qa7 Rc8 24. Qxc7 {Pacher,M 
(2429)-Jurcik,M (2391) Prievidza 2014 1-0 (35)}) 10. O-O (10. a4 Rb8 $14) 10...
O-O (10... a5 11. a3 $14) 11. Qc2 (11. a4 $5 bxa4 12. Qxa4 $14) 11... e5 12.
dxe5 Ng4 {Black threatens to win material: Ng4xe5} 13. Rae1 (13. h3 $142 $5 {
is interesting} Ngxe5 14. Nxe5 Nxe5 15. a4 $11) 13... Ndxe5 $17 14. Nxe5 Qxe5 (
14... Nxe5 $142 $5 15. f4 Nxd3 16. Qxd3 a5 $17) 15. f4 $11 Qh5 (15... Qe6 16.
Nd1 $11) 16. h3 $14 Nf6 17. Ne2 Bd7 18. Bd4 {The bishop is not easily driven
from d4} a5 {Black undermines the pawn chain} 19. a3 (19. Qb2 Ne8 20. a3 $14)
19... a4 {Black gets more space} (19... axb4 $142 $5 {might be a viable
alternative} 20. axb4 Rfe8 $11) 20. Qb2 Ne8 21. Ng3 {White threatens to win
material: Ng3xh5} (21. e4 $5 $16) 21... Qh4 $11 {Black threatens to win
material: Qh4xg3} 22. Kh2 {White king safety dropped} Nf6 23. Nh1 Rae8 24. Kg1
{White king safety improved} Nh5 25. Be2 $4 (25. Bxg7 $5 {looks like a viable
alternative} Nxg7 26. Qd2 $11) 25... Bxd4 $4 {Black has let it slip away} (
25... Rxe3 $142 $1 {Black missed this excellent chance} 26. Bxg7 Nxg7 $19) 26.
Qxd4 $17 Re4 {Black threatens to win material: Re4xd4} (26... Ng3 $5 27. Nxg3
Qxg3 $17) 27. Qd2 $11 f5 (27... Nf6 28. Bf3 $11) 28. Bf3 {White threatens to
win material: Bf3xe4} (28. Bxh5 gxh5 29. Nf2 Re7 $14) 28... Re7 29. Kh2 {
White king safety dropped} (29. g3 Qf6 $11) 29... Nf6 30. g3 Qh6 31. Nf2 {
[%cal Yd3e5,Yf2d3,Yh1f2] Manoeuvre Nh1-f2-d3-e5} Rfe8 32. Kg2 Qf8 (32... g5 33.
Bd1 $15) 33. Nd3 $11 Be6 34. Ne5 {Here comes the goal-getter} Rc8 35. g4 Qe8
36. g5 {White threatens to win material: g5xf6} Nd7 37. Nd3 Qf7 38. h4 Qg7 39.
Rh1 h5 40. gxh6 Qxh6 {Black has a new backward pawn: g6} 41. Reg1 Rg7 (41...
Bf7 42. h5 gxh5 43. Qd1 $14) 42. Kg3 {White king safety dropped} (42. Kf2 Bf7
$16) 42... Nf6 (42... Re8 43. Qb2 $14) 43. Nf2 (43. Qb2 $5 Kf7 44. Kf2 $16)
43... Ne4+ 44. Bxe4 fxe4 45. Nh3 Bxh3 46. Rxh3 Qh5 47. Qf2 Rf8 48. Kh2 {
White king safety improved} Rf5 49. Rg2 Qd1 {White king safety dropped} 50.
Rhg3 Kf7 51. Qd2 {White threatens to win material: Qd2xd1} Qa1 52. Qb2 $2 (52.
Rg5 $142 $5 $11 {would keep White alive}) 52... Qxb2 $17 53. Rxb2 Kf6 (53... d4
54. exd4 Rxf4 55. Kh3 $17) 54. Rbg2 (54. Rg4 $5 $11 {is an interesting
alternative}) 54... d4 $17 55. Rg5 (55. Rg5 dxe3 56. R5g4 $19) 1-0

[Event "SapporoSummer2018"]
[Site "?"]
[Date "2018.07.29"]
[Round "4.2"]
[White "BRINKMANN, Leonard"]
[Black "KIKUCHI, Akira"]
[Result "1-0"]
[ECO "A02"]
[WhiteElo "1636"]
[BlackElo "1763"]
[Annotator "Fritz 15 (30s)"]
[PlyCount "61"]

{[%mdl 8192] A02: Bird's Opening} 1. f4 b6 2. Nf3 Bb7 3. e3 Nf6 4. b3 e6 5. Bb2
Be7 6. Be2 d6 $146 {Controls e5} (6... O-O 7. O-O c5 8. Qe1 d6 9. Qg3 Nc6 10.
a3 Ne8 11. e4 d5 12. d3 b5 13. Nbd2 a5 14. a4 bxa4 15. bxa4 c4 16. exd5 exd5
17. dxc4 Qb6+ 18. Kh1 Qxb2 19. Rab1 Qxc2 20. Rxb7 Bb4 21. cxd5 {Amura,C (2330)
-German,P (2395) Buenos Aires 1995 0-1 (34)}) (6... c5 7. O-O Nc6 8. Ne5 Qc7 9.
Bf3 Rg8 10. Qe2 d5 11. d3 g5 12. Nd2 Nxe5 13. fxe5 Nd7 14. Bh5 Rg7 15. Bxf7+
Rxf7 16. Qh5 Nxe5 17. Bxe5 Qxe5 18. Qxf7+ Kd7 19. Nf3 Qxe3+ 20. Kh1 Rf8 21. Qg7
{Berescu,A (2386)-Ambrus,E (2281) Baile Tusnad 1999 1-0 (32)}) 7. O-O Nbd7 8.
c4 O-O 9. Na3 a6 {Consolidates b5} 10. Nc2 h6 {Prevents intrusion on g5} 11.
Qe1 Nh5 12. d3 {Secures e4} c5 13. Rd1 Bf6 {Black threatens to win material:
Bf6xb2} 14. Bc1 g6 15. g4 {White threatens to win material: g4xh5} Ng7 16. Qg3
Re8 17. e4 a5 18. a4 Rc8 (18... Bc3 $5 $11 {should be investigated more closely
}) 19. Qh3 $16 h5 20. Ng5 Bxg5 21. fxg5 hxg4 22. Bxg4 {White has the pair of
bishops} Ne5 23. Be2 Kf8 $4 (23... Ra8 $142 $14 {had to be tried to avoid
defeat}) 24. Qh8+ $18 Ke7 25. Qxg7 Kd7 (25... Rg8 {doesn't get the cat off the
tree} 26. Qf6+ Ke8 27. Qf4 $18) 26. Qf6 (26. d4 $142 {might be the shorter path
} Rg8 27. Qh6 cxd4 28. Nxd4 $18) 26... Re7 (26... Rh8 $18 {is one last hope})
27. d4 cxd4 (27... Nxc4 {doesn't improve anything} 28. bxc4 Qf8 29. dxc5 Rxc5
30. Bf4 $18) 28. Nxd4 Bc6 (28... Qf8 29. Nb5 Nxc4 30. bxc4 Bc6 31. Nxd6 Bxa4
32. Nf5+ Kc7 33. Nxe7 Rd8 34. Qe5+ Kb7 35. Nxg6 Qg8 36. Rxd8 Qxd8 37. Rxf7+ Ka8
38. Qg7 Qb8 39. Bf4 e5 40. Bxe5 Be8 41. Re7 Bd7 42. Rxd7 a4 43. Bxb8 a3 44.
Ra7+ Kxb8 45. Qb7#) 29. Nb5 Bxb5 30. Qxe5 Bc6 (30... Kc6 {is the last straw}
31. Qxb5+ Kb7 $18) 31. Rxd6+ (31. Rxd6+ Kc7 32. Rfd1 Qxd6 33. Qxd6+ Kb7 34.
Qxe7+ Rc7 35. Qd6 Rd7 36. Qf8 Rxd1+ 37. Bxd1 Bxa4 38. bxa4 e5 39. Bg4 f5 40.
gxf6 Ka7 41. Qc8 g5 42. Bxg5 b5 43. Be3#) (31. Qxd6+ Ke8 32. Qe5 Qxd1 33. Rxd1
f5 34. Ba3 Bd5 35. Rxd5 b5 36. Qh8+ Kf7 37. Qh7+ Kf8 38. Qxe7+ Kg8 39. Rd7 fxe4
40. Qh7#) 1-0

[Event "SapporoSummer2018"]
[Site "?"]
[Date "2018.07.29"]
[Round "4.3"]
[White "NAKAMURA, Mitsuru"]
[Black "NISHIMORI, Toshiyuki"]
[Result "0-1"]
[ECO "E90"]
[WhiteElo "1078"]
[BlackElo "1823"]
[Annotator "Fritz 15 (30s)"]
[PlyCount "80"]

{[%mdl 8256] E90: King's Indian: Classical: Early deviations and 6 h3} 1. d4
Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 Nbd7 6. Bd3 O-O 7. O-O c5 $146 (7... e5
8. d5 (8. Bc2 exd4 9. Nxd4 Ne5 10. b3 c6 11. h3 Re8 12. Bg5 Qa5 13. Qd2 h6 14.
Be3 Ned7 15. Rfe1 Nc5 16. Rad1 Bd7 17. Nde2 Rad8 18. f3 Kh7 19. Qxd6 Na6 20.
Qh2 Be6 21. e5 Nd7 22. f4 Nxe5 {Johansen,D (2485)-Nunn,J (2590) London 1983
0-1 (41)}) 8... Nh5 (8... Nc5 9. Bc2 Nh5 10. b4 Nd7 11. Bg5 Bf6 12. Bh6 Ng7 13.
Be3 Be7 14. Ne1 f5 15. f3 f4 16. Bf2 g5 17. g4 fxg3 18. hxg3 g4 19. Be3 gxf3
20. Nxf3 Nf6 21. Kg2 Ng4 22. Bd2 Qe8 23. Qe2 {Esplugas Esteve,V (2190)
-Martinez Duany,L (2468) Torredembarra 2012 0-1 (56)}) 9. Bg5 f6 10. Be3 Nf4
11. Bc2 Qe7 12. Ne2 Nxe2+ 13. Qxe2 f5 14. exf5 gxf5 15. Bg5 Qf7 16. Nh4 e4 17.
Rab1 a5 18. g4 fxg4 19. Qxe4 Qh5 20. Nf5 Rxf5 21. Qxf5 Ne5 22. Qf4 {Staudt,J 
(2200)-Jacobsen,B (2340) Ostend 1975 0-1}) (7... a6 8. h3 e5 9. Be3 exd4 10.
Bxd4 Re8 11. Re1 Ne5 12. Bf1 Nc6 13. Bxf6 Bxf6 14. Qd2 Ne5 15. Nd4 c5 16. Nc2
Be6 17. Nd5 Bg7 18. f4 Nc6 19. Kh2 Rb8 20. Rab1 b5 21. b4 bxc4 22. Bxc4 {
Roeder,M (2459)-Nijboer,F (2580) Ohrid 2001 1-0 (100)}) 8. Be3 {Black has a
cramped position. Black's piece can't move: c8} (8. d5 $5 $14) 8... Ng4 $11 9.
Qd2 Nxe3 10. Qxe3 (10. fxe3 b6 $11) 10... cxd4 $15 {Black forks: c3+e3} 11.
Nxd4 {Black has the pair of bishops} Ne5 12. Be2 a6 {Consolidates b5} (12...
Nc6 13. Nc2 $11) 13. f4 (13. Rad1 Nc6 $11) 13... Ng4 14. Bxg4 Bxg4 15. h3 {
White threatens to win material: h3xg4} Bd7 {Black has a cramped position} 16.
Rad1 Qb6 {Black threatens to win material: Qb6xb2} (16... b5 17. cxb5 axb5 18.
a3 $11) 17. Qf2 Qc7 (17... Rae8 18. Rd3 $11) 18. b3 {Covers a4} (18. Nd5 Qd8
$14) 18... Bc6 19. Nd5 Bxd5 20. cxd5 (20. exd5 b5 21. Rc1 Bxd4 22. Qxd4 Qa7 23.
Qxa7 Rxa7 $11) 20... Rac8 21. f5 {White wins space} Qc3 22. Ne2 (22. fxg6 $5
fxg6 23. Nf3 $15) 22... Qb2 $17 23. fxg6 (23. Nd4 $5 Bxd4 24. Qxd4 Qxa2 25. Rd3
$17) 23... fxg6 24. Qe3 Rc2 25. Rxf8+ Bxf8 26. Nf4 $4 {strolling merrily down
the path to disaster} (26. Re1 Qxa2 27. Rf1 Bg7 $17) 26... g5 (26... Bh6 $142 {
and Black takes home the point} 27. Qf3 Bxf4 28. Qxf4 Rxg2+ 29. Kh1 Rf2 $19)
27. Nd3 Rxg2+ 28. Kf1 Qxa2 29. Nf2 Rxf2+ $1 {Black has managed to stay ahead}
30. Qxf2 Qxb3 31. Rc1 (31. Ke2 Qxh3 32. Rf1 Qh5+ 33. Kd3 Bg7 $15) 31... Qxh3+
$19 32. Ke2 (32. Qg2 $142 Qd3+ 33. Ke1 Qe3+ 34. Kd1 $19) 32... h5 $4 {hands
over the advantage to the opponent} (32... Bg7 $142 $19 {the advantage is on
the side of Black}) 33. Rf1 $11 {White has a mate threat} Qg4+ {Black forks: e4
} 34. Kd3 Qh3+ (34... Bg7 35. Qf7+ Kh8 36. Qe8+ Kh7 37. Qxe7 Qg3+ 38. Ke2 Qh2+
39. Rf2 Qe5 $11) 35. Kd2 {White has a mate threat} Bg7 36. Qf7+ {White forks:
e7} Kh8 (36... Kh7 37. Rf3 Qg4 38. Rf5 $11) 37. Rf3 $11 {White threatens to
win material: Rf3xh3} Qh2+ 38. Ke3 $2 (38. Rf2 $5 Qh4 39. Rf5 $11) 38... Qg1+ (
38... g4 $142 39. Qe8+ Kh7 $19) 39. Kd3 $4 (39. Ke2 $142 {is the best chance}
Qg2+ 40. Ke3 $15) 39... Qd1+ 40. Ke3 (40. Kc4 {doesn't do any good} b5+ 41. Kb4
Qa4#) 40... Bd4# 0-1

[Event "SapporoSummer2018"]
[Site "?"]
[Date "2018.07.29"]
[Round "4.4"]
[White "ISHII, Hibiki"]
[Black "KANAMARU, Tomoji"]
[Result "0-1"]
[ECO "C02"]
[BlackElo "1666"]
[Annotator "Fritz 15 (30s)"]
[PlyCount "58"]

{[%mdl 8192] C02: French: Advance Variation} 1. e4 e6 2. d4 d5 3. e5 c5 4. c3
Nc6 5. Nf3 Bd7 6. Be2 Nge7 7. Bg5 (7. dxc5 Ng6 8. Be3 (8. b4 Ncxe5 9. Nxe5 Nxe5
10. O-O Be7 11. Be3 O-O 12. Nd2 b6 13. f4 Ng6 14. Nb3 Qc7 15. Qd2 Ba4 16. cxb6
axb6 17. Nd4 Bf6 18. f5 exf5 19. Rxf5 Be5 20. h3 Bd7 21. Rff1 Rac8 22. Rac1
Bxh3 {Rej,T (2308)-West,G (2343) Gold Coast 2009 1/2-1/2}) 8... Ngxe5 9. Nxe5
Nxe5 10. f4 Nc6 11. Nd2 b6 12. Nb3 bxc5 13. Nxc5 Qb6 14. Nxd7 Qxe3 15. Nxf8
Kxf8 16. Qd2 Qxd2+ 17. Kxd2 Ke7 18. b4 Rac8 19. Rhc1 Rhd8 20. Rab1 f6 21. Bd3
g6 {Velimirovic,D (2535)-Zueger,B (2435) Luzern 1989 1-0}) 7... h6 $146 (7...
cxd4 8. cxd4 (8. Bxe7 Bxe7 9. cxd4 O-O 10. O-O f6 11. Nc3 fxe5 12. Nxe5 Nxe5
13. dxe5 Qb6 14. Bd3 Rxf2 15. Rxf2 Rf8 16. Bxh7+ Kh8 17. Bd3 Qxf2+ 18. Kh1 Qh4
19. Qg1 b6 20. Rf1 Qg5 21. Rxf8+ Bxf8 22. Qe1 Bc5 {Benko,F (2170)-Giaccio,A 
(2390) Mar del Plata 1995 0-1 (63)}) 8... Qb6 9. Bxe7 Bxe7 10. Qd2 f6 11. O-O
fxe5 12. dxe5 O-O 13. Nc3 Kh8 14. Rad1 Rf5 15. Bd3 Rh5 16. Rfe1 Rf8 17. Bb1 Be8
18. Re2 Rh6 19. Na4 Qc7 20. Rc1 Bh5 21. Qc3 Bxf3 22. gxf3 {Cutter,P (2205)
-Smith,A (2275) Guernsey 1989 0-1}) 8. Bxe7 {White forks: c5+d8} Bxe7 9. O-O
O-O 10. Qc2 cxd4 11. cxd4 Qb6 12. Rd1 Rac8 13. Nc3 a6 {Controls b5} 14. Rab1
Na7 15. h3 Bb5 (15... Qa5 16. Bd3 $15) 16. Bxb5 Nxb5 17. Qd3 (17. Qb3 Rc6 $11)
17... Nxc3 $15 18. bxc3 Qc6 {Black threatens to win material: Qc6xc3} 19. Rb3
b5 20. Nh2 Rc7 21. Qg3 Rfc8 22. Ng4 {White threatens to win material: Ng4xh6}
Kh8 23. Rd3 b4 (23... a5 24. Qe3 Kh7 25. Qf4 $15) 24. cxb4 $11 Qc1+ 25. Kh2 Qe1
26. a3 $4 (26. Qe3 $142 {and White could well hope to play on} Bxb4 27. Kg3 $11
) 26... Rc1 $19 27. Qf3 $4 {White falls apart} (27. Qe3 Qh1+ 28. Kg3 $19) 27...
f5 (27... Bh4 28. Rd1 Rxd1 29. Qxd1 Qxd1 30. Ne3 Qxb3 31. g3 Bg5 32. Ng2 Rc1
33. h4 Qd1 34. Kh3 h5 35. Ne1 Qxe1 36. g4 Qh1+ 37. Kg3 Rg1#) 28. exf6 $11 gxf6
$4 {Black lets it slip away} (28... Bd6+ $142 {and Black hangs on} 29. Ne5
Bxe5+ 30. dxe5 Qxe5+ 31. Qg3 Qxf6 $11) 29. Nxf6 $4 {lets it slip away} (29. Qf4
$142 {a pity that White didn't try this} Kg8 30. Kg3 $18) 29... Bd6+ (29...
Bd6+ 30. Qf4 Bxf4+ 31. Rg3 Qh1#) 0-1

[Event "SapporoSummer2018"]
[Site "?"]
[Date "2018.07.29"]
[Round "4.5"]
[White "KOBAYASHI, Katsuhiko"]
[Black "TAKEUCHI, Hiroshi"]
[Result "1-0"]
[ECO "C01"]
[WhiteElo "1455"]
[Annotator "Fritz 15 (30s)"]
[PlyCount "111"]

{[%mdl 8192] C01: French: Exchange Variation} 1. e4 e6 2. d4 d5 3. exd5 exd5 4.
Nf3 Nf6 5. Be2 Nc6 (5... Be7 6. O-O (6. c4 O-O 7. cxd5 Nbd7 8. O-O Nb6 9. Nc3
Nbxd5 10. Re1 c6 11. h3 h6 12. Bd3 Be6 13. a3 Re8 14. Ne4 Nxe4 15. Bxe4 Qc8 16.
Bd2 Bd6 17. Rc1 Nf6 18. Bd3 Qd7 19. Bf1 Rad8 20. Ba5 b6 {Okhotnik,V (2421)
-Boricsev,O (2355) Lvov 2013 1-0 (65)}) 6... O-O 7. Ne5 c5 8. Be3 cxd4 9. Bxd4
Nc6 10. Nxc6 bxc6 11. Nc3 Be6 12. Bf3 c5 13. Bxf6 Bxf6 14. Bxd5 Bxd5 15. Nxd5
Bxb2 {1/2-1/2 (15) Malaniuk,V (2495)-Legky,N (2365) Kiev 1986}) 6. O-O b6 $146
(6... Bg4 7. h3 Bh5 8. c4 dxc4 9. Nc3 Bb4 10. d5 Bxc3 11. dxc6 Qxd1 12. Bxd1
Bb4 13. cxb7 Rb8 14. Ba4+ Ke7 15. Nd4 Rxb7 16. Nc6+ Kf8 17. Nxb4 Rxb4 18. b3
Kg8 19. Ba3 Rxa4 20. bxa4 h6 21. Rfe1 {Holmsten,A (2370)-Dokutchaev,A (2402)
Finland 2008 1/2-1/2 (49)}) (6... Bd6 $142 $5 $11 {and Black can hope to live})
7. Re1 Be7 8. Bg5 (8. Ne5 $5 Bd7 9. Nc3 $16) 8... O-O $14 {Black castles and
improves king safety} 9. Nc3 Bb7 10. Ne5 a5 (10... Nxe5 11. dxe5 Ne4 12. Nxe4
Bxg5 13. Nxg5 Qxg5 14. Qc1 $11) 11. Bxf6 (11. Bf3 $5 Na7 12. Qd3 $14) 11...
Bxf6 $11 12. Bf3 {White threatens to win material: Bf3xd5} Ne7 13. Bh5 g6 14.
Bf3 Re8 15. Qe2 Nf5 16. Qd3 c5 {Black threatens to win material: c5xd4} 17. Ng4
Rxe1+ 18. Rxe1 Bxd4 19. Nxd5 (19. Bxd5 Bxc3 20. Qxc3 Bxd5 21. Nf6+ Kg7 22.
Nxd5+ Nd4 $11) 19... Kg7 $15 20. c3 (20. Nf4 $142 $5 {has some apparent merit}
Bxf3 21. Qxf3 Bxb2 22. Rb1 $15) 20... Bxd5 $17 21. cxd4 Bxf3 (21... Nxd4 22.
Bxd5 Qxd5 23. Qc3 $17) 22. Qxf3 Qxd4 $4 {gives the opponent counterplay.} (
22... Nxd4 $142 23. Qe3 Qd6 $17) 23. Qxa8 $16 Qxg4 24. Qc6 {White threatens to
win material: Qc6xb6} (24. Qe4 $5 Qxe4 25. Rxe4 $16) 24... Qb4 $14 {Black has
a mate threat} 25. Rb1 Nd4 {Black threatens to win material: Nd4xc6. Black can
be proud of that piece} 26. Qd5 Qd2 27. Qe5+ Kg8 28. Qb8+ {White forks: b6} Kg7
29. Qxb6 (29. Kh1 $142 Qc2 30. Qe5+ Kg8 31. Qe8+ Kg7 32. Qe1 $14) 29... c4 $4 {
there were better ways to keep up the pressure} (29... Ne2+ $142 {is the best
option Black has} 30. Kh1 Nc1 $11) 30. Qc5 $18 Qd3 $2 (30... Ne2+ $142 31. Kh1
Nc1 $18) 31. Qe5+ Kg8 32. Re1 (32. Qe8+ {seems even better} Kg7 33. Qe1 Ne2+
34. Kh1 Qe4 $18) 32... Nc2 (32... Qd2 $18) 33. Qe2 $4 {overlooking an easy win}
(33. Rc1 $142 $18 {it becomes clear that White will call all the shots}) 33...
Nxe1 $11 34. Qxe1 Qc2 {Black threatens to win material: Qc2xb2} 35. Qe8+ Kg7 {
Black has a mate threat} 36. Qe5+ {White forks: a5} Kf8 37. h3 h5 38. Qc3 {
White threatens to win material: Qc3xc2} Qa4 39. b3 cxb3 40. Qxb3 (40. axb3 Qb4
41. Qh8+ Ke7 42. Qe5+ Kf8 43. Qh8+ Ke7 44. Qe5+ Kf8 45. Qh8+ $11) 40... Qxb3
$15 41. axb3 {A pawn endgame occured} Ke7 42. Kf1 Kd6 43. Ke2 Kc5 44. Kd2 $4 (
44. Kd3 Kb4 45. Kc2 g5 $15) 44... Kb4 $4 {Black threatens to win material:
Kb4xb3. Black is ruining his position} (44... Kd4 $142 {secures the point} 45.
Kc2 h4 $19) 45. Kc2 $11 f5 46. f3 g5 47. Kb2 $4 {White loses the upper hand} (
47. g3 h4 48. gxh4 gxh4 $11) 47... Kc5 $4 {not a good decision, because now
the opponent is right back in the game} (47... h4 {keeps an even firmer grip}
48. Kc2 Ka3 49. f4 gxf4 50. Kc3 $19) 48. Kc3 $4 (48. Ka3 Kd4 49. Ka4 Kc3 50.
Kxa5 Kxb3 $11) 48... Kd5 $4 {ruins a clearly superior position} (48... h4 {
and Black can already relax} 49. Kd3 Kb4 50. Kc2 $19) 49. Kd3 $4 {forfeits the
advantage} (49. g3 f4 50. gxf4 gxf4 $11) 49... Kc5 50. Kc3 Kd5 $4 {ignoring
the path to victory} (50... h4 $142 {and Black has triumphed} 51. Kd3 Kb4 $19)
51. g3 Kc5 52. Kc2 $4 {gives away a clear win} (52. Kd3 $142 $11 {would hold
out}) 52... Kd4 $19 53. Kd2 Ke5 {[%cal Yf5f4] Black plans f4} (53... h4 $142
$19 {and Black wins}) 54. Kd3 f4 {Black gains space} 55. g4 h4 {This push
gains space} 56. Kc4 1-0

[Event "SapporoSummer2018"]
[Site "?"]
[Date "2018.07.29"]
[Round "5.1"]
[White "BRINKMANN, Leonard"]
[Black "WATANABE, Katsumi"]
[Result "1-0"]
[ECO "A02"]
[WhiteElo "1636"]
[BlackElo "1672"]
[Annotator "Fritz 15 (30s)"]
[PlyCount "77"]

{[%mdl 8256] A02: Bird's Opening} 1. f4 g6 2. Nf3 Bg7 3. c4 (3. d4 c5 (3... Nf6
4. e3 O-O 5. Be2 c5 6. O-O d6 7. c3 b6 8. a4 Bb7 9. Nbd2 cxd4 10. exd4 e6 11.
Nc4 Qc7 12. Ne3 Nbd7 13. a5 Nd5 14. Nxd5 Bxd5 15. Ng5 h6 16. Nh3 Bc4 17. Nf2
Bxe2 18. Qxe2 {Schmidt Schaeffer,S (2368)-Maeser,F (2319) Switzerland 2013 1/
2-1/2}) 4. e3 d5 5. Bd3 Nh6 6. c3 O-O 7. O-O Nd7 8. a4 Qc7 9. Bd2 Nf6 10. Be1
Bf5 11. Be2 Bg4 12. h3 Bxf3 13. Rxf3 Nf5 14. Bd3 Ne4 15. Nd2 Nxe3 16. Rxe3 cxd4
17. Rf3 dxc3 {Williams,S (2310)-Rowson,J (2490) Tallinn 1997 1/2-1/2 (45)})
3... d6 $146 {Covers e5} (3... c5 4. Nc3 Nc6 5. e3 Nf6 (5... d6 6. Be2 e5 7.
fxe5 dxe5 8. O-O f5 9. d3 Nf6 10. Rb1 O-O 11. a3 a5 12. Qc2 h6 13. Nh4 Nd4 14.
exd4 Qxd4+ 15. Kh1 Qxh4 16. Be3 Nd7 17. Nd5 Qd8 18. Bf3 g5 19. h3 Ra6 20. b4 {
Spiller,P (2200)-Green,E (2265) Auckland 1999 0-1}) 6. Be2 O-O 7. O-O d5 8. Ne5
d4 9. Nxc6 bxc6 10. Na4 Qd6 11. Qb3 e5 12. d3 Bg4 13. fxe5 Qxe5 14. Rxf6 Bxf6
15. Bxg4 dxe3 16. Qd1 Rae8 17. Qe2 Qd6 18. Rb1 {Cools,G (2275)-Lendwai,R (2425)
Clichy 1993 1-0 (41)}) (3... Nf6 4. Nc3 d5 5. e3 c5 6. cxd5 Nxd5 7. Bc4 e6 8.
Ne4 O-O 9. Nxc5 Nxe3 10. dxe3 Qa5+ 11. Kf2 Qxc5 12. Qe2 Nc6 13. Rf1 e5 14. Qc2
Be6 15. Bb3 Qxc2+ 16. Bxc2 exf4 17. exf4 Nb4 18. Be4 {Wahedi,A (2287)-Sieber,S
(2231) Germany 2011 0-1 (48)}) 4. Nc3 Nf6 5. e3 O-O 6. Be2 Nc6 7. O-O e5 8.
fxe5 dxe5 9. d3 {Secures e4} Qe7 10. Kh1 (10. e4 $5 $11) 10... e4 $15 11. Nd4
Nxd4 (11... exd3 $5 12. Nxc6 bxc6 13. Qxd3 Re8 $17) 12. exd4 $11 {White has
new doubled pawns: d3+d4} Bf5 (12... e3 13. Bf3 $11) 13. dxe4 (13. Bg5 $142 $5
Qd6 14. Bxf6 exd3 15. Bxd3 Qxf6 16. g4 Bxg4 17. Qxg4 Qxd4 18. Qxd4 Bxd4 19.
Rad1 $16) 13... Nxe4 $15 14. Bf3 Nxc3 (14... Rad8 15. g4 Nxc3 16. bxc3 $15) 15.
bxc3 $11 c6 {Prevents intrusion on d5} 16. a4 Rfe8 17. Bd2 Qc7 18. Qc1 (18. a5
$5 $11 {should be considered}) 18... Bd3 $17 19. Bf4 Qd7 20. c5 Bxf1 21. Qxf1
Qf5 22. Bg3 $2 (22. Qc1 Qd3 $17) 22... Qc2 (22... Re3 $142 $5 $19) 23. Qc1
Qxc1+ 24. Rxc1 Re3 25. Bf2 (25. Bf4 $5 Re6 26. Kg1 $17) 25... Rd3 26. Be1 Re8
27. Bg3 $2 (27. Rb1 $142 $17) 27... Bh6 $19 28. Rb1 Re7 (28... Rxc3 $142 {
and Black can celebrate victory} 29. d5 cxd5 $19) 29. Bd6 $17 Rd7 30. Re1 $2 (
30. d5 cxd5 31. c6 bxc6 32. Rb8+ Kg7 33. Bf8+ Kf6 34. Bxh6 Rxc3 $17) 30... Rxc3
$4 {gives the opponent new chances} (30... Be3 $142 {finishes off the opponent}
31. a5 a6 $19) 31. Re8+ $17 Kg7 32. Bf8+ Kf6 33. Bxh6 g5 $4 {a transit from
better to worse} (33... Rxd4 $142 34. a5 Ra4 $17) 34. h4 $14 gxh4 (34... Rxd4
$5 {is worth looking at} 35. hxg5+ Kg6 $16) 35. Bf4 $16 Rb3 (35... Kg7 $142 $5
36. Bd6 Rc4 $18) 36. Bg4 $18 Rd5 37. Be5+ Kg5 $4 {leading to a quick end} (
37... Rxe5 $142 38. dxe5+ Kg5 $18) 38. Rg8+ Kh6 39. Bf4+ (39. Bf4+ Rg5 40.
Bxg5#) 1-0

[Event "SapporoSummer2018"]
[Site "?"]
[Date "2018.07.29"]
[Round "5.2"]
[White "NISHIMORI, Toshiyuki"]
[Black "SUGIMOTO, Koichi"]
[Result "0-1"]
[ECO "B01"]
[WhiteElo "1823"]
[BlackElo "1966"]
[Annotator "Fritz 15 (30s)"]
[PlyCount "82"]

{[%mdl 8192] B01: Scandinavian Defence} 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd6 4. d3
(4. g3 Nf6 5. Bg2 c6 6. Nf3 Bf5 7. O-O e6 8. d4 Be7 9. Ne5 h5 10. h3 Nbd7 11.
f4 Nb6 12. g4 hxg4 13. hxg4 Nxg4 14. Nxg4 Bxg4 15. Qxg4 Qxd4+ 16. Rf2 Bh4 17.
Ne4 Bxf2+ 18. Nxf2 O-O-O {Kharlov,A (2560)-Vokarev,S (2485) Moscow 1998 1-0 
(38)}) 4... Nc6 $146 (4... Nf6 5. h3 (5. Nf3 Nc6 (5... Bg4 6. h3 Bxf3 7. Qxf3
c6 8. Bf4 Qb4 9. O-O-O Nbd7 10. g4 e6 11. Bg2 Bd6 12. Bxd6 Qxd6 13. Ne4 Qe7 14.
Qg3 Nxe4 15. dxe4 e5 16. f4 exf4 17. Qxf4 Ne5 18. g5 O-O 19. h4 Rad8 20. h5 {
Szegi,T (2261)-Szabo,R (2180) Hungary 2010 1/2-1/2 (34)}) 6. Be3 Bf5 7. Qd2 e5
8. O-O-O Be7 9. h3 O-O 10. g4 Be6 11. Kb1 Nd4 12. Ng5 Nd5 13. Nxe6 Qxe6 14.
Bxd4 exd4 15. Nxd5 Qxd5 16. Rg1 Qb5 17. Bg2 Bb4 18. Qc1 Rfe8 19. Be4 Re6 {
Ohme,M (2274)-Alber,H (2363) Germany 2008 1/2-1/2 (35)}) 5... a6 6. Nge2 b5 7.
Bf4 e5 8. Bh2 Nbd7 9. Ng3 Bb7 10. Qe2 O-O-O 11. O-O-O Qb6 12. Kb1 b4 13. Nce4
Nd5 14. Ka1 f6 15. Nf5 a5 16. Ne3 Nxe3 17. fxe3 Qe6 18. Nd2 Nb6 19. e4 {
Majella,Y (2276)-Aung Aungaaung,M (2324) Nay Pyi Taw 2013 1-0 (43)}) 5. Nf3 Bg4
6. Be2 e5 7. Be3 a6 {Secures b5} 8. Qd2 (8. a3 $5 $11) 8... f5 9. Qc1 {Black
has a very active position} h6 {White has a cramped position} 10. b3 {Black
has a very active position} (10. h3 Bxf3 11. Bxf3 Nf6 $11) 10... O-O-O 11. Qb2
{Black has an active position} Nf6 12. O-O-O {Black has a very active position}
f4 {Black threatens to win material: f4xe3} 13. Bd2 {White has a cramped
position} Qc5 {Black threatens to win material: Qc5xf2} 14. Rhf1 {White has a
cramped position} Be7 15. h3 Bxf3 16. Bxf3 {White has the pair of bishops} Nd4
17. Be4 Nxe4 18. Nxe4 {A comfortable square for the white knight} Qc6 {Black
has a king attack} 19. Kb1 Rhf8 20. f3 Kb8 21. Qc3 {White has a cramped
position} Qg6 22. Qa5 $2 (22. Rg1 $142 $5 $15 {and White has air to breath})
22... Nc6 $19 23. Qa4 (23. Qc3 Qxg2 24. Qb2 Nd4 $19) 23... Rd4 24. b4 Bxb4 25.
Qb3 $2 (25. c4 $142 Be7 26. Bc3 Qxg2 27. Bxd4 Nxd4 28. Ka1 $19) 25... Bxd2 26.
Ka1 (26. c3 {cannot undo what has already been done} Bxc3 $1 {Double attack:
g2/b1} 27. Qxc3 Rb4+ 28. Ka1 Qxg2 $19) 26... Rb4 27. Qa3 Rd8 (27... Be3 $142 {
makes sure everything is clear} 28. c3 Nd4 $19) 28. Rxd2 $17 Qe6 29. c3 Rb5 30.
c4 (30. Rb1 Qd5 $17) 30... Ra5 $19 31. Qb3 Nd4 32. Qb4 Nc6 {Black threatens to
win material: Nc6xb4} 33. Qb2 $4 {letting the wind out of his own sails} (33.
Qb3 Qe7 34. Rb1 $19) 33... Qe7 $19 34. Rb1 b6 35. Nc3 Rd4 36. Ne2 Rd7 37. Nc3
Qd8 38. Nd5 Kb7 39. Qc3 Ka7 40. Rdb2 Rc5 41. Rb3 $4 {terrible, but what else
could White do to save the game?} (41. Qe1 $142 $17) 41... Rdxd5 $19 0-1

[Event "SapporoSummer2018"]
[Site "?"]
[Date "2018.07.29"]
[Round "5.3"]
[White "KIKUCHI, Akira"]
[Black "KOBAYASHI, Katsuhiko"]
[Result "1/2-1/2"]
[ECO "B08"]
[WhiteElo "1763"]
[BlackElo "1455"]
[Annotator "Fritz 15 (30s)"]
[PlyCount "81"]

{B08: Pirc Defence: Classical System} 1. d4 Nf6 2. Bf4 g6 3. Nc3 Bg7 4. e4 d6
5. Nf3 Bg4 {Black has a cramped position} 6. Qd2 $146 (6. Be2 O-O 7. Qd2 c6 8.
h3 Bxf3 9. Bxf3 Qb6 10. O-O Rd8 11. Be3 Nbd7 12. a3 Qc7 13. Be2 e5 14. f4 exd4
15. Bxd4 Nc5 16. Bf3 Ne6 17. Bf2 Bh6 18. g3 Rd7 19. Rad1 Rad8 20. Bg2 d5 {
Ostojic,P (2485)-Torre,E (2515) Cleveland 1975 1-0 (45)}) (6. h3 Bxf3 7. Qxf3
Nfd7 (7... Nc6 8. O-O-O O-O 9. g4 Nd7 10. Be3 e5 11. dxe5 dxe5 12. h4 Nd4 13.
Qh3 h6 14. f4 c5 15. f5 Nb6 16. Kb1 Qd7 17. Qg2 Rfd8 18. Qf2 Qc6 19. Bg2 Rd7
20. Nd5 Nc4 21. Bc1 Rxd5 22. exd5 {Rodriguez Nunez,J (2193)-Lugo Matos,R (2198)
Santo Domingo 2015 0-1 (35)}) 8. e5 Nc6 9. O-O-O a6 (9... Qc8 10. Bb5 O-O 11.
Rhe1 Rb8 12. Nd5 Kh8 13. exd6 exd6 14. Ne7 Nxe7 15. Rxe7 Nf6 16. Bg5 Ng8 17.
Rxf7 Qe6 18. Rxf8 Rxf8 19. Qxb7 Qxa2 20. Qa6 Qd5 21. Be3 Qxg2 22. Qxa7 c5 23.
Qb6 Qa8 24. Qa6 {Vorotnikov,V (2475)-Maki,V (2380) Leningrad 1984 1-0 (40)})
10. Bc4 O-O 11. Bd5 Ndb8 12. h4 e6 13. Bb3 dxe5 14. dxe5 Qe7 15. Qe3 Qb4 16. h5
g5 17. Bxg5 Nxe5 18. Bh4 {1-0 (18) Kholmov,R (2555)-Petran,P (2455)
Zalaegerszeg 1977}) 6... Bxf3 7. gxf3 {White has the pair of bishops} O-O 8.
O-O-O Nbd7 9. Bh6 Bxh6 10. Qxh6 e5 11. d5 {White gains space} (11. dxe5 $5 Nxe5
12. Be2 $14) 11... Nh5 $11 12. Be2 Qf6 13. Rdg1 Qf4+ 14. Qxf4 Nxf4 15. h4 Nxe2+
(15... Nf6 16. Bc4 $15) 16. Nxe2 $11 h5 17. f4 exf4 18. Nxf4 Kh7 19. f3 a5 20.
Rg3 a4 21. a3 Rg8 22. Nd3 c6 (22... Rge8 23. Kd2 $11) 23. Re1 (23. dxc6 bxc6
24. Rd1 Nf6 $14) 23... c5 24. f4 b6 (24... Rae8 $5 $11 {must be considered})
25. e5 $16 dxe5 (25... Rge8 $5 $16) 26. fxe5 c4 27. Nb4 Rge8 28. Rge3 b5 29.
Nc6 Nb8 $2 (29... Kg7 30. d6 $18) 30. Nxb8 (30. Nd4 $142 $18 {makes it even
easier for White}) 30... Raxb8 $16 31. d6 (31. Rd1 $5 $16) 31... Rbd8 $14 32.
Rd1 Kh6 (32... Re6 $142 $5 $14 {must definitely be considered}) 33. Rd5 $16 g5
(33... Re6 34. Rf3 Kg7 35. Kd2 $16) 34. hxg5+ $18 Kxg5 35. e6+ $4 {with this
move White loses his initiative} (35. Rf3 $142 {White had this great chance} f5
36. exf6+ Kg6 37. Kd2 $18) 35... Kf4 $11 {Black threatens to win material:
Kf4xe3} 36. Rh3 fxe6 37. Rdxh5 Rxd6 38. R3h4+ (38. Rxb5 $5 {is worthy of
consideration} e5 39. Rb4 $11) 38... Kf3 $11 39. Rh3+ Ke4 (39... Kf2 40. Rxb5
e5 41. Rb4 $11) 40. R3h4+ (40. Rxb5 $142 $5 Rf8 41. Rh1 $16) 40... Kf3 $11 41.
Rh3+ 1/2-1/2

[Event "SapporoSummer2018"]
[Site "?"]
[Date "2018.07.29"]
[Round "5.4"]
[White "KANAMARU, Tomoji"]
[Black "NAKAMURA, Mitsuru"]
[Result "0-1"]
[ECO "B84"]
[WhiteElo "1666"]
[BlackElo "1078"]
[Annotator "Fritz 15 (30s)"]
[PlyCount "64"]

{[%mdl 8256] B84: Sicilian Scheveningen: 6 Be2 a6, lines without early Be3} 1.
e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e6 7. Be3 Nbd7 8. O-O
Be7 (8... b5 9. a4 (9. a3 Bb7 10. f3 Be7 11. Qe1 O-O 12. Rd1 Rc8 13. Kh1 Qc7
14. Qg3 Kh8 15. Rd2 Qb8 16. Nb3 Ba8 17. Bd4 e5 18. Be3 Nb6 19. Na5 d5 20. exd5
Nbxd5 21. Nxd5 Nxd5 22. Bg1 Nf4 23. Nb3 Rcd8 {Bondar,E (2200)-Siuniakov,I 
(2309) Kemerovo 2012 0-1 (41)}) 9... b4 10. Nc6 Qc7 11. Nxb4 d5 12. Nxa6 Bxa6
13. exd5 Bb4 14. dxe6 fxe6 15. Nb5 Bxb5 16. Bxb5 Bd6 17. h3 O-O 18. Re1 Nd5 19.
Qg4 Rf5 20. Qc4 Qd8 21. Qe4 Re5 22. Qd3 Qe7 23. Bd4 {Kravtsiv,M (2559)
-Zhigalko,S (2640) Katowice 2010 0-1 (35)}) 9. Kh1 Qc7 10. f4 O-O 11. g4 $146 (
11. Bf3 Re8 12. Qe1 Nc5 13. g4 e5 14. Nf5 Bxf5 15. exf5 Bf8 16. Bxc5 Qxc5 17.
fxe5 Rxe5 18. Qg3 Rae8 19. Rae1 Qb4 20. Rxe5 Rxe5 21. g5 Nd7 22. Bd5 Qxb2 23.
Qh3 Qxc2 24. Bb3 Qd2 25. f6 Rxg5 {Rombaldoni,A (2169)-Mazzilli,P (2310) Bratto
2006 1-0}) 11... Nc5 {Black threatens to win material: Nc5xe4} (11... d5 12. e5
Ne4 13. Nxe4 dxe4 14. c3 $11) 12. Bf3 $14 {Black has a cramped position} Bd7
13. g5 {White threatens to win material: g5xf6} Ne8 14. f5 {White wins space}
e5 {Black threatens to win material: e5xd4} 15. Nd5 {White threatens to win
material: Nd5xc7. White forks: c7+e7} Qd8 16. Nxe7+ Qxe7 {White has the pair
of bishops} 17. Ne2 {Black has a cramped position} Bc6 {Black threatens to win
material: Bc6xe4} 18. Nc3 a5 19. Nd5 Bxd5 20. Qxd5 Kh8 21. Rad1 Rb8 22. Rg1 b6
23. Rdf1 (23. Qc6 g6 $16) 23... Na6 (23... Qd7 24. Qd2 $16) 24. Bg4 Nb4 25. Qd2
Rc8 $4 {causes further problems for ?} (25... Qb7 $142 26. Bf3 Na6 $16) 26. c3
$18 Nxa2 (26... Qb7 {doesn't change anything anymore} 27. cxb4 Qxe4+ 28. Bf3
Qxb4 29. Qxb4 axb4 30. Rc1 $18) 27. f6 Qc7 (27... Qb7 {does not improve
anything} 28. Bxc8 Qxe4+ 29. Rg2 $18) 28. Bxc8 Qxc8 29. fxg7+ Kxg7 (29... Nxg7
{what else?} 30. Qxd6 a4 31. Qxe5 Qe6 32. Qxe6 Nxe6 $18) 30. g6 hxg6 31. Bh6+
Kg8 (31... Kh7 {there is nothing else anyway} 32. Bxf8 Qe6 $18) 32. Rxg6+ $3 {
Deflection: f7.} Kh7 (32... fxg6 33. Qd5+ {Decoy Double attack} (33. Rxf8+ {
Deflection Pinning})) 0-1

[Event "SapporoSummer2018"]
[Site "?"]
[Date "2018.07.29"]
[Round "5.5"]
[White "YOSHII, Yukihiko"]
[Black "ISHII, Hibiki"]
[Result "1-0"]
[ECO "D06"]
[WhiteElo "1844"]
[Annotator "Fritz 15 (30s)"]
[PlyCount "73"]

{[%mdl 8192] D06: Queen's Gambit: Symmetrical and Baltic Defences} 1. c4 Nf6 2.
Nc3 d5 3. cxd5 Nxd5 4. d4 (4. Qb3 Nb6 5. Nf3 Nc6 6. d4 e5 7. Nxe5 Nxe5 8. dxe5
Be6 9. Qc2 Qd4 10. Qe4 Qxe4 11. Nxe4 O-O-O 12. a3 Nc4 13. Ng5 Nxe5 14. Nxe6
fxe6 15. g3 Bc5 16. Bh3 Rhe8 17. O-O Nc6 18. b4 Bb6 {Rotstein,A (2544)-Ernst,S
(2497) Germany 2002 1-0 (31)}) 4... Nc6 $146 (4... c5 5. e4 Nxc3 6. bxc3 cxd4
7. cxd4 e5 8. Nf3 exd4 9. Qxd4 Qxd4 10. Nxd4 Bb4+ 11. Bd2 Bxd2+ 12. Kxd2 O-O
13. Bc4 Rd8 14. Ke3 Bd7 15. Bd5 Bc6 16. Bxc6 Nxc6 17. Nxc6 bxc6 18. Rac1 Rd6
19. Rhd1 {Elbaba,E (2152)-Abdul Moula,S (2168) Amman 2008 1-0 (37)}) (4... c6
5. e4 Nxc3 6. bxc3 e5 7. Nf3 exd4 8. cxd4 Bb4+ 9. Bd2 Bxd2+ 10. Qxd2 O-O 11.
Bc4 Bg4 12. Ne5 Be6 13. Bxe6 fxe6 14. O-O Nd7 15. Nxd7 Qxd7 16. Qb4 Rfd8 17.
Rfd1 b6 18. Qb3 Rac8 19. Rac1 {Zaitsev,A (2374)-Afromeev,V (2556) Tula 2005 1/
2-1/2}) (4... Nxc3 5. bxc3 e5 6. Nf3 e4 7. Ng5 Qd5 8. Qc2 Bf5 9. Qb3 Qxb3 10.
axb3 Be7 11. f3 exf3 12. gxf3 Bc2 13. b4 h6 14. Nh3 O-O 15. e4 Nd7 16. Rg1 Kh8
17. Ra3 Nb6 18. Bf4 Bd6 19. Bxd6 {Czebe,A (2462)-Jirka,J (2398) Leipzig 2002
1-0 (32)}) 5. e4 {White threatens to win material: e4xd5} Nf6 (5... Nxc3 6.
bxc3 e5 7. d5 $11) 6. Bb5 (6. d5 Nb8 $16) 6... Bd7 (6... e5 7. Nf3 exd4 8. Nxd4
$16) 7. Nge2 {Black has a cramped position. Black's piece can't move: f8} (7.
e5 Ng8 $16) 7... e6 {White has an active position} 8. Bg5 {White has a very
active position} Be7 {Black has a cramped position} 9. O-O O-O 10. h3 {Covers
g4} (10. e5 Nd5 11. Bxe7 Ncxe7 $11) 10... h6 (10... Nxe4 $5 {should be
examined more closely} 11. Nxe4 Bxg5 $15) 11. Be3 $14 a6 {Black threatens to
win material: a6xb5} 12. Bd3 {White has an active position} Nb4 (12... e5 $5
$14) 13. Bb1 $16 Rc8 (13... Nc6 $5 $16) 14. a3 Nc6 15. e5 Nd5 (15... Nh7 16.
Qd3 f5 17. exf6 Nxf6 18. Bxh6 $18) 16. Nxd5 $18 exd5 17. Qd3 g6 18. Bxh6 Re8
19. Qg3 Bh4 20. Qf3 Be6 21. Be3 Bg5 (21... Na5 22. Nf4 $16) 22. Nf4 $18 Bxf4
23. Qxf4 Qe7 24. Qh6 Qf8 25. Qh4 Qg7 26. Bg5 Qh7 27. Qf4 Nd8 28. Bf6 b6 (28...
Bd7 29. Rc1 $18) 29. Bd3 b5 30. b4 (30. a4 {keeps an even firmer grip} Bf5 31.
Bxf5 gxf5 32. axb5 axb5 33. Bxd8 Rexd8 $18) 30... c6 31. Rac1 Nb7 (31... Bd7
32. Be2 $18) 32. Rfe1 (32. Qg5 {makes it even easier for White} Kf8 $18) 32...
a5 (32... Bd7 33. Qg5 $18) 33. Re3 (33. Qd2 {seems even better} axb4 34. Qxb4
Nd8 $18) 33... axb4 $6 {puts up no fight} (33... Bd7 $18) 34. axb4 Nd8 (34...
Bd7 35. Ra1 c5 36. Ra7 $18) 35. Rg3 Ra8 (35... Bd7 36. Qd2 $18) 36. h4 (36.
Bxd8 $142 {and White can already relax} Raxd8 37. Bxg6 fxg6 $18) 36... Ra3 (
36... Bd7 37. Bxd8 c5 38. dxc5 Raxd8 $18) 37. Bxg6 (37. Bxg6 fxg6 38. Rxa3 $18)
1-0

