[Event "Canadian Open 1974"]  [White "Bent Larsen"]  [Black "Jonathan Berry"]  [Result "1-0"]  [ECO "B90"]  [Annotator "ATH"]  [PlyCount "59"]  [EventDate "1974.??.??"]  [EventType "swiss"]  [EventRounds "11"]  [EventCountry "CAN"]  [SourceTitle "Juniors?"]  [Source "ChessBase"]  [SourceDate "1999.07.01"]  [SourceVersion "1"]  [SourceVersionDate "1999.07.01"]  [SourceQuality "1"]   1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be6 8. Nd5  $5 ({The main line is} 8. f3 Be7 9. Qd2) 8... Nbd7 9. f3 Bxd5 {Apparently, a  novelty at the time.} ({Everyone else was playing} 9... Nxd5) 10. exd5 Be7 11.  Qd2 O-O 12. a4 $2 (12. O-O-O $11 {Khomulo-Malisauskas, USSR 1988}) 12... Nh5 (  12... Rc8 $1 $15) 13. g3 (13. O-O-O $5) 13... f5 14. f4 (14. O-O-O f4 15. gxf4  Nxf4 $11) 14... Rc8 (14... exf4 $1 15. gxf4 Bh4+ 16. Kd1 (16. Bf2 $4 Qe7+ 17.  Kd1 Qe4 $19) 16... Ndf6 $17) 15. Bd3 $2 (15. O-O-O Nhf6 16. Kb1 Ne4 $11) 15...  g6 $6 (15... exf4 16. gxf4 Bh4+ $17) 16. O-O $6 (16. O-O-O $1 Re8 17. Kb1 $11)  16... Ndf6 $6 (16... Qc7 $15) 17. a5 Qe8 (17... Ng4 $1 18. Bb6 Qd7 $11) 18. c4  (18. Rae1 $5) 18... Ng4 (18... Rf7 {is slightly better according to Stockfish})  19. Ba7 $6 (19. fxe5 $1 Nxe5 (19... Nxe3 $6 20. Qxe3 dxe5 21. c5 $14) (19...  dxe5 20. c5 f4 $11) 20. Nd4 Nxc4 21. Bxc4 Rxc4 22. Bh6 Bf6 23. Ne6 Rf7 24. Rac1  $44) 19... g5 $4 (19... Rf7 $15) 20. fxe5 Nxe5 21. Bxf5 Rxc4 ({Better but  still insufficient is} 21... Rxf5 22. Rxf5 Qg6 23. Raf1 $18) 22. Bd4 (22. Be6+  Kh8 23. Nd4 {is a bone-crusher}) 22... Bf6 ({After} 22... Ng7 23. Bxh7+ $1 Kxh7  24. Bxe5 $18 {Black dies a slower death}) 23. Bxe5 Qxe5 (23... Bxe5 24. Bxh7+  $1 $18) 24. Rae1 Nxg3 (24... Qxb2 25. Bxh7+ Kxh7 26. Qd3+ $18) 25. Rxe5 Nxf1  26. Qd3 Bxe5 27. Be6+ Kh8 28. Qxc4 Bxh2+ (28... Ne3 29. Qe2 Rf1+ 30. Qxf1 $18)  29. Kh1 Rf2 $2 {blunders a rook in a hopeless position} (29... Be5 30. Qc7 $18)  30. Qd4+ 1-0