[Event "1986 Canadian Open, Winnipeg"]  [White "Viktor Kupreichik"]  [Black "Artur Yusupov"]  [Result "0-1"]  [ECO "C17"]  [WhiteElo "2490"]  [BlackElo "2660"]  [Annotator "ATH"]  [PlyCount "60"]  [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. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 Ne7 5. Qg4 ({The main line with} 5. a3 {  is better}) 5... c5 6. dxc5 (6. Nf3 {is better}) 6... Nbc6 7. Bd2 O-O 8. O-O-O  $5 (8. Nf3 f5 9. Qg3 Bxc5 $11) 8... Bxc5 9. Ne4 $2 (9. Nf3 Ng6 10. Qg3 Bd7 $11)  9... Nxe5 ({Naturally not} 9... dxe4 10. Bh6 Qxd1+ 11. Kxd1 Rd8+ 12. Kc1 Nf5  13. Bd2 $14) 10. Nf6+ (10. Qg3 {is a better try (but still very unpleasant, if  not losing), e.g.,} Nf5 11. Qxe5 Bd4 12. Nf6+ (12. Qf4 e5 $1 $19) (12. Bg5 Bxe5  13. Bxd8 Rxd8 14. Ng3 Nd6 $19) 12... Kh8 13. Qe1 Qxf6 14. c3 Bb6 15. Bf4 (15.  Nf3 Nh4 $1 16. Nxh4 Bxf2 $19) 15... d4 $17) 10... Kh8 11. Qh4 h6 $146 (11...  gxf6 $2 12. Qxf6+ Kg8 13. Qxe5 f6 14. Qg3+ $11 {Vinokurov-Beloserov, corr 2002}  ) 12. Nh5 (12. Qh5 gxf6 13. Nf3 (13. Bxh6 Kg8 14. f4 N5g6 $19) 13... Kg8 $1 14.  Nxe5 fxe5 15. Bxh6 Nf5 16. Rd3 Qh4 $19) 12... Nf5 13. Qh3 (13. Qxd8 Rxd8 14.  Nh3 {avoids dropping a pawn but White's position still sucks}) 13... Bxf2 14.  g4 Nh4 $1 15. Be2 Bd7 $6 (15... Qb6 16. Be1 Neg6 17. Bxf2 Qxf2 18. Qg3 Qg2 $1  $19) 16. Qc3 $6 (16. Rf1 {is better}) 16... d4 17. Qc5 Nhg6 18. Nh3 Rc8 19. Qd6  ({After} 19. Qa5 {White dies a somewhat slower death}) 19... d3 20. Nxf2 dxe2 (  20... Rxc2+ {is slightly more bone-crushing}) 21. Rde1 ({The amazing thing is  not that Stockfish thinks} 21. Qd4 {is better but that after} Bc6 22. Bc3 {  Stockfish doesn't want to take the rook with check while queening a pawn but  prefers} Qxd4 {and prefers} 23. Bxd4 {to recapturing with the rook and again  wouldn't take the rook with check queening a pawn but recommends} Rfd8 {  which gives you an idea how completely resignable White's position is. Further  comment is unnecessary.}) 21... Rxc2+ 22. Kb1 Nc4 23. Qb4 Rxb2+ 24. Qxb2 Nxb2  25. Bc3 e5 26. Bxb2 Bb5 27. Ng3 Qb6 28. Nfe4 Re8 29. Ka1 Re6 30. Rb1 Bc4 0-1