[Event "1983 Canadian Open"]  [Site "Toronto"]  [White "Leonid Shamkovich"]  [Black "Lawrence Day"]  [Result "1-0"]  [ECO "C91"]  [WhiteElo "2480"]  [BlackElo "2448"]  [Annotator "ATH"]  [PlyCount "75"]  [EventDate "1983.07.??"]  [EventType "swiss"]  [EventRounds "10"]  [EventCountry "CAN"]  [SourceTitle "CFC 1983.09"]   1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3  O-O 9. d4 (9. h3 {is the main line}) 9... Bg4 10. d5 (10. Be3 $5) 10... Na5 11.  Bc2 c5 $6 (11... Qc8 $11) 12. Nbd2 (12. h3 $5 Bd7 13. b3 $14) 12... Ne8 $2 (  12... Bd7 $11) 13. h3 (13. Nf1 $1) 13... Bd7 14. Nf1 Nb7 $2 (14... Nc4 15. b3  $14 {Tseshkovsky-Ivkov, Moscow 1999}) 15. b3 a5 (15... Qc7 16. c4 $14) 16. a4  b4 17. Bd2 g6 (17... Nc7 18. Ne3 $14) 18. g4 $6 (18. Bh6 Ng7 19. Ne3 $14) 18...  Ng7 (18... h5 $1 19. gxh5 bxc3 20. Bh6 Ng7 21. Ng3 Bxh3 $11) 19. Ng3 (19. Ne3  f5 20. exf5 gxf5 $11) 19... h5 20. gxh5 Bxh3 (20... bxc3 $5) 21. Nh2 $2 (21. h6  Ne8 $11) 21... bxc3 (21... Bg5 $5 $15) 22. Bxc3 (22. Be3 $5) 22... Bg5 (22...  Rc8 $1 $15) 23. Qf3 Qc8 $2 (23... Rc8 $1 $15) 24. Kh1 $1 Kh7 (24... Bf4 $5 25.  Rg1 $14) 25. Rg1 (25. Bb2 $1 c4 26. bxc4 Qxc4 27. Bc1 Bh4 28. Bd1 Nc5 29. Be2  $16) 25... Kh6 $2 (25... Bf4 26. Ne2 Nxh5 27. Ng4 Ng3+ 28. Rxg3 Bxg3 29. Nf6+  Kg7 30. Nxg3 $16) 26. Nf5+ $1 Bxf5 27. exf5 Nxf5 (27... Nxh5 28. Rxg5 $1 Nf4 (  28... Kxg5 29. fxg6 Nf4 30. Rg1+ $18) 29. Rg4 $18) 28. Ng4+ $6 (28. Rxg5 $1 $18  {would end the game quickly}) 28... Kh7 $2 (28... Kg7 29. Nxe5 $1 dxe5 30. Rxg5  $18 {is better but not by nearly enough to save the game}) 29. Nxe5 dxe5 30.  Rxg5 Nbd6 31. Bxe5 f6 32. Rxg6 fxe5 33. Rxd6 Kh8 34. Re6 Ng7 35. Rh6+ Kg8 36.  Bh7+ Kh8 37. Qe3 Qd8 38. Bg6+ 1-0  

  [Event "1979 London match"]  [White "Murray Chandler"]  [Black "Jim Plaskett"]  [Result "0-1"]  [ECO "A89"]  [WhiteElo "2380"]  [BlackElo "2410"]  [Annotator "ATH"]  [PlyCount "82"]  [EventDate "1979.12.07"]  [EventType "match"]  [EventRounds "4"]  [EventCountry "ENG"]  [SourceTitle "www.newzealandchess.co.n"]  [SourceDate "2019.11.05"]  [SourceVersion "1"]  [SourceVersionDate "2006.11.24"]  [SourceQuality "1"]   1. d4 f5 2. Nf3 Nf6 3. c4 g6 4. Nc3 Bg7 5. g3 O-O 6. Bg2 d6 7. O-O Nc6 8. d5  Ne5 9. Nxe5 dxe5 10. e4 (10. Qb3 $1 e4 11. Bf4 Nh5 12. Bg5 $14) 10... f4 (10...  e6 $5 11. Qb3 exd5 12. cxd5 Nxe4 13. Nxe4 fxe4 14. d6+ Kh8 15. dxc7 Qxc7 16.  Bxe4 $14) 11. gxf4 (11. a4 $5) 11... exf4 12. Bxf4 Nxe4 13. Bxc7 (13. Bg3 Nxg3  14. hxg3 e6 15. Rc1 Rb8 $11) 13... Nxc3 14. Bxd8 Nxd1 15. Bxe7 Nxb2 16. d6 (16.  Bxf8 Kxf8 17. c5 Nd3 $19 {is somewhat better}) 16... Rf4 17. Rab1 ({as is} 17.  c5 Nd3 $19) 17... Nxc4 $2 (17... Rg4 $1 18. Kh1 Rxg2 19. Kxg2 Bd7 $19) 18. Bd5+  $6 (18. Rb4 Be6 19. Bxb7 Re8 $17) 18... Kh8 19. Bxb7 Bxb7 20. Rxb7 Bf8 $1 21.  Rd1 Rf7 $6 (21... Nb6 $1 $19) 22. Rc7 Nb6 (22... Bxe7 $2 23. dxe7 Re8 24. Rd8  Rfxe7 25. Rxe8+ Rxe8 26. Rxc4 $11) 23. Rd4 $2 (23. a4 a5 24. Rc6 Nd7 $17) 23...  Re8 (23... Bxe7 $1 24. dxe7 Re8 $19 {is even better}) 24. d7 $6 (24. Bxf8 Rxc7  25. dxc7 Rxf8 $19 {puts up more resistance}) 24... Rexe7 25. d8=Q Rxc7 26. Qg5  (26. Qe8 {is better but wouldn't make much difference}) 26... Rf5 27. Qe3 (27.  Qg3 $5) 27... Nd5 (27... Rcf7 $19 {is strongest}) 28. Qd2 Rc5 (28... Rd7 $1 $19  ) 29. Re4 Kg8 (29... Nf6 $1 $19) 30. h4 (30. a4 $5) 30... Nf6 31. Ra4 (31. Rf4  {would pointlessly prolong the game}) 31... Rc7 $6 (31... Rcd5 $19 {is the  quick way}) 32. Kg2 $2 (32. Rf4 {would put up real, if ultimately futile,  resistance}) 32... Bc5 $2 (32... Nd5 $19 {wins easily}) 33. f3 $2 ({White  misses (presumably because of time pressure)} 33. Qd8+ $16 {which would turn  the tables}) 33... Rd7 ({Again} 33... Nd5 $19 {is strongest}) 34. Qc2 (34. Qe2  {is irrelevantly best}) 34... Rfd5 (34... Bb6 $1 {a time scramble?}) 35. Qb3 $2  (35. Kh3 {is much better but wouldn't change the result}) 35... Kg7 36. Ra6 (  36. Qc3) 36... Bb6 (36... Rd2+ {and White probably doesn't make it to move 40})  37. Ra3 $2 (37. Rxb6 {would make Black work slightly harder for the win}) 37...  Rd2+ 38. Kh3 Bc5 (38... Bc7 $1 $19 {ends the game immediately}) 39. Ra4 (39.  Ra6 {is better but to what end?}) 39... R2d3 (39... Bd6 $1) 40. Qe6 (40. Qc2 {  and White lives on (like the Black Knight in Monty Python)}) 40... Rxf3+ 41.  Kg2 Rf2+ 0-1  

  [Event "1966 Canadian Open"]  [White "James Sherwin"]  [Black "Walter Browne"]  [Result "1-0"]  [ECO "D25"]  [Annotator "ATH"]  [PlyCount "81"]  [EventDate "1966.??.??"]  [EventType "swiss"]  [EventCountry "CAN"]  [SourceTitle "Chess Chat 1967.07"]  [SourceDate "2005.01.01"]  [SourceVersion "1"]  [SourceVersionDate "2005.01.01"]  [SourceQuality "1"]   1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 Bg4 5. h3 Bh5 6. Nc3 e6 7. Bxc4 Nbd7 8.  O-O c6 (8... Bb4 $1 9. a3 Bxc3 10. bxc3 Ne4 $11) 9. e4 (9. Be2 $14) 9... Be7 (  9... Bb4 $1 $11) 10. Be2 (10. Bb3 $1 $14) 10... O-O 11. Be3 (11. Bf4 $5) 11...  Qa5 $2 (11... Bxf3 $11) 12. a3 (12. g4 $1) 12... Rfd8 $6 (12... h6 13. Rc1 $14)  13. Qc2 (13. g4 $1 $16) 13... Rac8 14. Rfd1 (14. g4 $14) 14... a6 (14... h6 15.  Rac1 $14) 15. b4 (15. g4 $1 $14 {Stockfish seems obsessed with g4. It keeps  coming up as the best move.}) 15... Qc7 16. Qb3 (16. Rac1 $14) 16... Bxf3 (  16... Bg6 $5 17. Bd3 $14) 17. Bxf3 e5 18. dxe5 (18. Rac1 $14) 18... Nxe5 19.  Be2 Ng6 20. Rac1 Rxd1+ 21. Rxd1 c5 $6 (21... Bd6 $1 $11) 22. Rc1 $6 (22. b5 c4  23. Qb2 $14) 22... c4 $6 (22... cxb4 23. axb4 (23. Nd5 $5 Qxc1+ 24. Bxc1 Rxc1+  25. Kh2 Bd6+ $11) 23... Qd6 $11) 23. Qc2 (23. Qa4 $5 Qe5 $11) 23... b5 $6 (  23... Bd6 $1 $11) 24. Rd1 $6 (24. g3 Bd6 25. f4 $14) 24... Nf4 $6 (24... Bd6 $1  $11) 25. Bf1 Rd8 $6 (25... Ne6 26. g3 $14) 26. g3 (26. Rxd8+ $1 Bxd8 27. a4 Qb8  28. Qa2 Nd3 29. Bxd3 cxd3 30. axb5 axb5 31. Qb1 $14) 26... Ne6 (26... Rxd1 $5)  27. f4 (27. Bg2 $1 Qb8 28. f4 $14) 27... Rxd1 28. Qxd1 Qd7 $2 (28... a5 $1 $11)  29. Qxd7 Nxd7 30. e5 Nc7 ({Slightly better is} 30... g6 31. Bg2 $16) 31. Bg2 f6  $2 (31... a5 $1 32. bxa5 Bxa3 33. Bc6 b4 34. Bxd7 bxc3 35. Ba4 $16) 32. e6 Nf8  33. f5 a5 (33... g6 34. Bf4 Ne8 35. Nd5 $18) 34. bxa5 Bxa3 35. Bb6 (35. Bd5 $1  {is even stronger}) 35... b4 36. Bxc7 (36. Ne2 {is the quick method}) 36...  bxc3 37. Be4 g6 38. g4 gxf5 (38... Kg7 {is irrelevantly better according to  Stockfish}) 39. gxf5 h5 ({Ditto with} 39... Bc5+) 40. Bb6 Nh7 41. h4 (41. a6 {  mates in 12 moves whereas the game continuation takes 14 moves}) 1-0  

  [Event "1974 World Open"]  [White "Jack Peters"]  [Black "Bent Larsen"]  [Result "0-1"]  [ECO "B84"]  [Annotator "ATH"]  [PlyCount "80"]  [EventDate "1974.07.??"]  [EventType "swiss"]  [EventRounds "9"]  [EventCountry "USA"]  [SourceTitle "StarBase 4.56"]  [SourceDate "2004.11.04"]  [SourceVersion "1"]  [SourceVersionDate "2004.11.04"]  [SourceQuality "2"]   1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 Nbd7 7. f4 a6 8. a4  Qc7 9. O-O b6 10. Bf3 Bb7 11. Kh1 Be7 12. Qe1 O-O 13. g4 Qc4 14. Be3 d5 15. e5  (15. Be2 $5) 15... Ne4 16. Nxe4 (16. Be2 $5) 16... dxe4 17. Bg2 Rac8 (17...  Rfd8 $1 $11) 18. Qg3 (18. h4 $1) 18... Qb4 $6 (18... Rfd8 $11) 19. f5 $6 (19.  Rad1 $14) 19... Qxb2 20. fxe6 $2 (20. Rad1 $1 Qa3 $11) 20... fxe6 21. Rfb1 Qc3  22. Nxe6 Rf3 $1 23. Bxf3 exf3 24. Bf2 Nxe5 $2 (24... Bc5 $1 25. Nxc5 Nxc5 $19)  25. Kg1 $6 (25. Re1 Ng6 $17) 25... Ng6 26. g5 a5 $2 (26... Bd5 $1 27. Nf4 Nxf4  28. Qxf4 Bc5 29. Rd1 Re8 $1 30. Bxc5 Qxc5+ 31. Qd4 Re1+ 32. Kf2 Re2+ 33. Kg1  f2+ 34. Kf1 Bc4 $19) 27. Qg4 $6 (27. Re1 Bb4 $17) 27... Re8 $2 (27... Rc4 $19)  28. Nd4 $2 (28. Qd4 Qxd4 29. Bxd4 Bb4 $8 30. c3 (30. Nxg7 $2 Re2 $19) 30...  Rxe6 31. cxb4 Nf4 $15) 28... Bc5 29. Re1 $6 (29. Rd1 Rf8 30. Qe6+ Kh8 31. Qe3  Qb4 32. Qb3 Nf4 $19 {puts up somewhat more resistance}) 29... Rf8 30. Rad1 Nf4  (30... Bc8 $1 $19 {is even stronger}) 31. Kh1 $2 ({Best (but still hopeless) is  } 31. Re8 Rxe8 32. Qxf4 Qc4 $19) 31... Bxd4 32. Qg3 $2 ({After} 32. Rf1 {  Black mates in 27 according to Stockfish}) 32... Ne2 {This mates in 12 moves  whereas} (32... Bxf2 $1 {mates in seven}) 33. Qh4 Rf4 (33... Bxf2 {mates in  eleven}) 34. Qh5 ({After} 34. Qh3 {the checkmate is beyond Stockfish's horizon}  ) 34... g6 (34... Bxf2 {again mates in eleven}) 35. Qh3 Rf8 (35... Bc8 {  is quicker}) 36. Rf1 $2 (36. Qe6+ {would needlessly prolong the game}) 36...  Bc8 37. Qh4 Bxf2 (37... Rf4 {is even stronger. Presumably, a time scramble is  what's keeping this game going.}) 38. Qxf2 (38. Qe4 {pushes the checkmate  beyond Stockfish's horizon}) 38... Qxc2 (38... Bh3 {mates in 16}) 39. Qxb6 ({  After} 39. Rc1 {checkmate is still 22 moves away}) 39... Bh3 (39... Ng3+ {  mates next move}) 40. Rb1 (40. Qf2 {would postpone mate by six moves.}) 40...  Bg2# 0-1  

  [Event "1997 US Open"]  [Site "Kissimmee, FL"]  [White "Gabriel Schwartzman"]  [Black "Igor Shliperman"]  [Result "1-0"]  [ECO "A12"]  [EventType "swiss"]  [EventRounds "12"]  [EventCountry "USA"]  [SourceTitle "CL, Oct 1997"]  [SourceDate "2016.04.24"]  [SourceVersion "1"]  [SourceVersionDate "2016.04.24"]  [SourceQuality "1"]   1. Nf3 d5 2. c4 c6 3. b3 Bg4 4. g3 Nd7 5. Bg2 (5. Bb2 $1) 5... Bxf3 (5... e5 $1  $11) 6. Bxf3 dxc4 (6... d4 $5) 7. bxc4 Ne5 8. Bg2 (8. Nc3 $5) 8... Nxc4 9. Qb3  (9. O-O $44) 9... Nd6 (9... Na5 $1 $11) 10. O-O Nf6 11. Nc3 (11. a4 $5) 11...  e5 (11... e6 $1 12. e4 Nd7 $11) 12. Ba3 (12. Rb1 $1) 12... Rb8 (12... Qb6 $1  13. Qa4 $14) 13. Rab1 (13. Bc5 $1 a6 14. Rab1 $14) 13... Nd7 $6 (13... Qc7 14.  Rfc1 $14) 14. Rfd1 Qf6 (14... Nc8 15. Bb2 c5 16. Bd5 $16) 15. Qa4 (15. e3 $1  $16) 15... a6 $6 (15... Be7 16. d4 O-O 17. d5 Nb6 18. Qxa7 Nxd5 19. Bxd6 Qxd6  20. Bxd5 $16) 16. d4 exd4 $2 (16... Nb5 17. Ne4 $18) 17. Rxd4 Nb5 (17... Nf5 {  would prolong the game without changing the outcome}) 18. Re4+ Kd8 19. Nxb5  axb5 $2 (19... cxb5 {would also proling the game}) 20. Qa5+ b6 21. Qa7 Bxa3 22.  Rd1 Bd6 (22... Qd6 {avoids imminent checkmate and only prolongs Black's  suffering}) 23. Bh3 1-0  

  [Event "US Amateur Team East 2009"]  [White "Dmitry Schneider"]  [Black "Arthur Bisguier"]  [Result "1-0"]  [ECO "C77"]  [WhiteElo "2508"]  [BlackElo "2218"]  [Annotator "ATH"]  [PlyCount "79"]  [EventDate "2009.02.??"]  [EventType "team-swiss"]  [EventRounds "6"]  [EventCountry "USA"]  [SourceTitle "Unknown"]  [SourceDate "2009.03.03"]  [SourceVersionDate "2009.03.03"]   1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3 d6 5. c3 g6 6. Nbd2 Bg7 7. Nf1 a6 8. Ba4  b5 9. Bb3 Na5 10. Bc2 c5 11. Bg5 Nc6 $146 (11... h6 12. Bh4 Be6 $11 {Al  Modiahki-Kobalia, Gibraltar 2006}) 12. Ne3 (12. Bb3 $5 Rb8 $11) 12... Ne7 $6 (  12... h6 13. Bh4 O-O $11) 13. a4 (13. Bb3 $1 $14) 13... Bb7 14. h4 $6 (14. Bb3  $1 $14) 14... Qd7 $6 (14... Nh5 15. Bb3 Qd7 $11) 15. axb5 (15. Bxf6 $1 Bxf6 16.  h5 $14) 15... axb5 16. Rxa8+ Bxa8 17. Bxf6 Bxf6 18. h5 d5 (18... O-O $5 $11)  19. Nd2 (19. d4 $1) 19... Bg5 (19... O-O) 20. hxg6 (20. Ng4 $5 $11) 20... fxg6  21. Qe2 (21. O-O O-O $11) 21... O-O 22. Nf3 Bf6 23. exd5 (23. Bb3 $5) 23...  Nxd5 24. Bb3 Rd8 25. Nd2 $6 (25. O-O Kg7 $11) 25... Kh8 $6 (25... c4 $1 26.  Nxd5 (26. dxc4 $2 Nf4 $19) 26... Qxd5 27. Nxc4 Kg7 $17) 26. Bxd5 (26. Ng4 $5)  26... Bxd5 27. Ne4 (27. f3 $5) 27... Bxe4 $2 (27... Be7 $11) 28. dxe4 c4 29.  Nd5 Bg5 $6 (29... Be7 30. Qf3 Ra8 (30... Rf8 $6 31. Rxh7+ $1 Kxh7 32. Qxf8 Bxf8  33. Nf6+ $16) 31. O-O $16) 30. O-O (30. Qf3 $1) 30... h5 $6 (30... Rf8 31. Ra1  $14) 31. Ra1 (31. Qf3 $1 $16) 31... Rf8 $6 (31... Kg7 32. Ra5 $14) 32. f3 Rf7  33. Qf2 h4 $2 (33... Kh7 34. Qb6 $16) 34. Ra6 (34. Qb6 $1 $18 {is even stronger  }) 34... Kh7 35. Qb6 Rg7 36. Ra8 $2 (36. Kh2 $1 $18) 36... Qb7 37. Rb8 $2 (37.  Qxb7 Rxb7 38. Kh2 Bc1 39. Kh3 Bxb2 (39... g5 40. Kg4 Kg6 41. Ra6+ $18) 40. Kxh4  Kh6 41. Kg4 $18) 37... Qf7 $2 (37... Qxb6+ 38. Rxb6 Kh6 39. Rxb5 Ra7 40. Kh2  $16) 38. Qc5 $2 (38. Qd6 $18) 38... h3 $2 (38... Qa7 39. Qxa7 Rxa7 40. Rxb5 $16  ) 39. Qc8 (39. Ra8 {is a lot stronger but, judging from the last few moves, I  imagine the players were in a terrible time scramble}) 39... Qa7+ $2 (39... Rg8  {would prolong the game beyond the time control without changing the outcome})  40. Kh2 1-0  

  [Event "1986 Canadian Open"]  [White "Artur Yusupov"]  [Black "Irwin Lipnowski"]  [Result "1-0"]  [ECO "E70"]  [WhiteElo "2660"]  [BlackElo "2402"]  [Annotator "ATH"]  [PlyCount "35"]  [EventDate "1986.07.12"]  [EventType "swiss"]  [EventRounds "10"]  [EventCountry "CAN"]  [SourceTitle "Canbase"]  [SourceDate "2015.08.19"]  [SourceVersion "1"]  [SourceVersionDate "2015.08.19"]  [SourceQuality "1"]   1. d4 Nf6 2. c4 c5 3. d5 d6 4. Nc3 g6 5. e4 Bg7 6. Bd3 O-O 7. Nge2 $5 (7. Nf3  $14) 7... e5 $6 (7... a6 8. a4 $14) 8. h3 (8. Bg5 $16) 8... Ne8 9. g4 (9. h4 $1  h5 10. f3 $16) 9... Qh4 10. Ng3 (10. Ng1 $1 $16) 10... Bf6 (10... a6 11. Be3  $16) 11. Qd2 (11. Be3 $16) 11... Kg7 (11... Bd7 12. a3 $16) 12. Nd1 (12. Nce2  $1) 12... h6 $6 (12... Kg8 13. Kf1 $16) 13. Ne3 Bg5 14. Qe2 (14. Qc3 $1 Bxe3  15. Bxe3 $16) 14... Bf4 15. Qf3 Qf6 16. h4 (16. Bd2 $5) 16... Rh8 17. Nef5+ $2  (17. Qg2 $1 Bxe3 18. Bxe3 Bxg4 19. Be2 Bxe2 20. Nf5+ Kf8 21. Bg5 $1 gxf5 (21...  hxg5 22. hxg5 Rxh1+ 23. Qxh1 $18) 22. Bxf6 Nxf6 23. Kxe2 Rg8 24. Qh3 $16) 17...  Kf8 $4 (17... Kg8 18. Ne3 Bxe3 19. Qxf6 Nxf6 20. Bxe3 Bxg4 21. f3 Bh5 $11) 18.  g5 (18. g5 Qd8 19. Nxh6 $18) 1-0  

  [Event "Odense jr 1983"]  [White "Carsten Pedersen"]  [Black "Lars Schandorff"]  [Result "0-1"]  [ECO "B23"]  [Annotator "ATH"]  [PlyCount "50"]  [EventDate "1983"]  [SourceTitle "StarBase 4.56"]  [SourceDate "2004.11.04"]  [SourceVersion "1"]  [SourceVersionDate "2004.11.04"]  [SourceQuality "2"]   1. e4 c5 2. Nc3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 (4... Nxd7 $11) 5. f4 (5. d4 cxd4  6. Qxd4 Nc6 7. Qd3 e6 $11) 5... Nc6 6. Nf3 g6 (6... e6 $11) 7. b3 (7. d4 cxd4  8. Nxd4 Bg7 9. Be3 Nf6 $11 {Bernard-Guttulsrud, Politiken Cup 2008}) 7... Bg7  8. Bb2 e6 (8... f5 $5) 9. O-O $6 (9. Qe2 Nge7 $11) 9... Nge7 (9... f5 $1) 10.  Rb1 (10. e5 $1 d5 $11 (10... dxe5 11. Ne4 $11)) 10... O-O (10... f5 $5) 11. Ne2  $5 (11. d3) 11... Bxb2 (11... e5 $1) 12. Rxb2 f5 (12... b5 $5) 13. exf5 (13. d3  e5 $11) 13... Nxf5 14. Re1 $6 (14. Rb1 $11) 14... Rae8 15. d4 $2 (15. Rb1)  15... cxd4 16. Nexd4 Nfxd4 17. Nxd4 Rxf4 (17... Qg7 $5 $17) 18. Nb5 $6 (18. Nf3  Qg7 19. Rb1 d5 $17) 18... a6 19. Qxd6 $2 (19. Nc3 d5 $17) 19... Qf7 20. Nc7 Re7  21. Nxa6 $2 (21. Nxe6 Rd4 $19 (21... Rxe6 22. Qxe6 Rf1+ $19)) 21... Rd7 22. Qc5  Rd2 23. Rbb1 $2 {Not that it matters but it's far to late to get this rook  into the game} (23. Qc3 Rff2 24. Qg3 Nd4 $19) 23... Rxg2+ $5 {Pretty but} (  23... Rg4 {actually mates one move faster}) 24. Kxg2 $2 (24. Kh1 Rxh2+ $1 25.  Kxh2 Rh4+ 26. Kg3 Qf4+ 27. Kg2 Rh2+ 28. Kg1 Qg3+ 29. Kf1 Qg2# {prolongs the  game by four moves}) 24... Rg4+ 25. Kh1 Qf3# 0-1  

  [Event "1985 US Open"]  [White "Roman Dzindzichashvili"]  [Black "Boris Spassky"]  [Result "0-1"]  [ECO "A10"]  [WhiteElo "2678"]  [BlackElo "2690"]  [Annotator "ATH"]  [PlyCount "66"]  [EventDate "1985.08.??"]  [EventType "swiss"]  [EventRounds "12"]  [EventCountry "USA"]  [SourceTitle "StarBase 4.56"]  [SourceDate "2004.11.04"]  [SourceVersion "1"]  [SourceVersionDate "2004.11.04"]  [SourceQuality "2"]   1. c4 b6 2. e4 Bb7 3. Nc3 e6 4. d3 c5 (4... d5 $5 5. cxd5 exd5 6. Nxd5 Bxd5 7.  exd5 Bb4+ 8. Bd2 Bxd2+ 9. Qxd2 Qxd5 10. Be2 Nc6 $11 {Van der Elburg-Dal Borgo,  Kemer 2007}) 5. g3 Nc6 (5... Ne7 $5) 6. Nge2 (6. Bg2 g6 7. Nge2 Bg7 $11) 6...  g6 $6 (6... h5 $1 $11 {according to Stockfish}) 7. d4 cxd4 8. Nxd4 Nxd4 9. Qxd4  Nf6 10. Bg2 (10. Bg5 $14) 10... Bc5 $6 (10... Bg7 11. Bg5 $14) 11. Qd1 O-O 12.  O-O (12. Bh6 $16) 12... Nh5 $6 (12... Qc7 13. Bh6 Rfc8 14. Rc1 $14) 13. Bh6 Ng7  14. Qd2 $6 (14. a3 $16) 14... f6 (14... Bc6 $5 $14) 15. Rad1 (15. Rab1 $5)  15... Rf7 (15... Bc6 $5 $14) 16. Nb5 (16. a3 a5 17. Be3 $14) 16... Qc8 17. b3  Qc6 (17... a6 18. Nd6 Bxd6 19. Qxd6 $14) 18. Nd4 $2 (18. Nd6 $14) 18... Bxd4  19. Qxd4 $2 (19. Bxg7 $1 Bc5 20. Bh6 $11) 19... Nf5 $1 20. Qd2 g5 21. Bxg5 fxg5  22. Qxg5+ Rg7 (22... Ng7 $1 $17 {is slightly stronger}) 23. Qh5 Rf8 24. Rd2 Ne7  (24... e5 $1 $19) 25. Rfd1 (25. f4 $5 Qc7 $17) 25... Ng6 26. Qe2 (26. Rd6 Qc7  $19) 26... Nf4 $1 27. gxf4 Qxe4 28. Qxe4 Bxe4 29. f3 Bxf3 30. Rf1 ({Stockfish  prefers} 30. Re1 {slightly but it really doesn't matter where White puts his  rook}) 30... Rxf4 31. Rff2 (31. Rb2 e5 $19) 31... Rf5 ({The immediate} 31... e5  {is even stronger}) 32. h4 Bc6 33. Rfe2 Rf4 0-1  

  [Event "1978 Northern BC Open"]  [White "Chris Evans"]  [Black "Gyula Sax"]  [Result "0-1"]  [ECO "B84"]  [Annotator "ATH"]  [PlyCount "70"]  [EventDate "1978.08.05"]  [EventType "swiss"]  [EventRounds "5"]  [EventCountry "CAN"]  [SourceTitle "Canbase"]  [SourceDate "2015.08.19"]  [SourceVersion "1"]  [SourceVersionDate "2015.08.19"]  [SourceQuality "1"]   1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 a6 7. f4 (7. O-O {  is the main line}) 7... b5 $5 {Against another GM, this move would probably  rate a ?!} (7... Be7 8. Bf3 O-O 9. O-O Re8 $11) 8. Bf3 Ra7 9. e5 $6 (9. a3 $14)  9... dxe5 10. fxe5 Rd7 (10... Nfd7 11. Bf4 Nc5 $11) 11. exf6 (11. Be3 $5 Bc5  12. exf6 Bxd4 13. Bxd4 Rxd4 14. fxg7 Rxd1+ 15. Rxd1 Rg8 16. Rxd8+ Kxd8 17. Kf2  Rxg7 $11) 11... Rxd4 12. Qe2 b4 $6 (12... gxf6 $11) 13. Ne4 (13. Na4 $5 $14)  13... Bd7 $6 (13... gxf6 14. O-O $14) 14. Qf2 $6 (14. Be3 Bb5 15. Qf2 $18)  14... Bb5 $6 (14... Bc6 15. O-O Bxe4 16. Be3 (16. Bxe4 $2 Qxf6 $15) 16... Rd7  17. fxg7 Bxg7 18. Bxe4 $16) 15. Be3 Rd5 (15... Rxe4 16. Bxe4 Qxf6 17. Qg3 $18 {  is slightly better}) 16. c4 $2 (16. Bb6 $1 Qc8 17. Bd4 g6 18. O-O-O $18) 16...  bxc3 17. Nxc3 Re5 18. Nxb5 $2 (18. Rd1 Qa5 19. Kd2 $1 gxf6 20. Kc1 $14) 18...  Bc5 (18... Qd3 $1 $11) 19. Qc2 $2 (19. Rd1 Rxe3+ 20. Qxe3 Qxd1+ 21. Kxd1 Bxe3  $11) 19... Bxe3 $2 (19... Rxe3+ 20. Be2 Qa5+ 21. Kf1 Nd7 $17) 20. fxg7 Bh6+ $6  (20... Rg8 21. Rd1 Qh4+ 22. g3 Bc5+ 23. Be2 Qb4+ 24. Nc3 Rxg7 $11) 21. Kf1 Bxg7  22. Rd1 Qb6 23. Nd6+ Kf8 $4 (23... Ke7 24. Nc8+ Rxc8 25. Qxc8 Rc5 26. Qb7+ Qxb7  27. Bxb7 Rb5 $11) 24. Nc4 $4 (24. Qc8+ Ke7 25. Qxh8 $18) 24... Qc7 (24... Rc5  $5) 25. h4 (25. Rc1 $11) 25... Rf5 (25... Rc5 $11) 26. b3 Bf6 27. Qd2 Rf4 28.  h5 (28. Ke2 $5 $11) 28... Bd4 (28... Rd4 $5 $11) 29. Qb4+ (29. Nb2 $1 $11)  29... Bc5 30. Qc3 Rg8 31. Qd3 $2 (31. Ke2 $11) 31... Nc6 32. Qd7 $2 (32. Rh3  Nd4 $19) 32... Rxf3+ $1 33. gxf3 Qg3 34. Qc8+ Kg7 35. Qxg8+ Kxg8 0-1