[Event "1987 World Open"]  [Site "Philadelphia"]  [White "Patrick Wolff"]  [Black "Larry Christiansen"]  [Result "1-0"]  [ECO "B14"]  [Annotator "ATH"]  [PlyCount "81"]  [EventDate "1987.07.??"]  [EventType "swiss"]  [EventCountry "USA"]  [SourceTitle "StarBase 4.56"]  [SourceDate "2004.11.04"]  [SourceVersion "1"]  [SourceVersionDate "2004.11.04"]  [SourceQuality "2"]   1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 e6 6. Nf3 Bb4 7. cxd5 Nxd5 8.  Qc2 Nc6 9. Be2 O-O ({The new (2020) edition of ECO gives} 9... Nce7 $11 {  as the main line}) 10. O-O Be7 11. Rd1 Bf6 (11... Ncb4 $1 12. Qb3 b6 13. a3  Nxc3 14. bxc3 Nc6 15. c4 Ba6 $1 $11) 12. Bd3 (12. a3 $5) 12... g6 (12... h6 $11  ) 13. Be4 (13. Bh6 {is slightly better}) 13... Bd7 $6 (13... Nce7 $1 $11) 14.  Bxd5 Nb4 15. Qb3 Nxd5 16. Bh6 Re8 17. Qxb7 Nxc3 18. bxc3 Qc8 $6 (18... Ba4 19.  Re1 $14) 19. Qe4 Bh8 20. Rac1 (20. Qe3 $1 $16) 20... Bc6 21. Qf4 Bxf3 22. Qxf3  Qc4 23. Rb1 Rab8 24. g3 a5 ({Better is} 24... a6 25. Qf4 $14) 25. Qf4 (25. Bf4  $1 $16) 25... Rbd8 26. Rdc1 $6 (26. Bg5 e5 27. dxe5 Rxd1+ 28. Rxd1 Qxa2 29. Bf6  $14) 26... e5 $2 (26... Qxa2 $11) 27. dxe5 Qxa2 (27... Qc6 $5 28. Re1 Qxc3 29.  Rbc1 $16) 28. Rb5 a4 $2 (28... Qe6 29. Rxa5 $16) 29. c4 Re6 $2 (29... Qa3 30.  Rb7 $18) 30. Rb7 f6 31. exf6 $6 {Far from the best move but it doesn't matter;  Black is toast} (31. Qe3 $18 {is best although}) (31. Rb8 $5 Rxb8 32. exf6 $18  {is cuter}) 31... Bxf6 $2 {Black chooses a quick death} (31... Rxf6 32. Qe3 {  prolongs his suffering}) 32. Rb8 Qa3 33. Rd1 $6 ({So White decides to prolong  Black's suffering.} 33. Rxd8+ Bxd8 34. c5 $18 {is the quick method}) 33... Rxb8  (33... Rde8 {is irrelevantly better}) 34. Qxb8+ Kf7 35. Rd7+ Re7 36. Qf8+ Ke6  37. Rd5 Be5 38. Bg5 Qa1+ ({After} 38... h6 {it will take White 21 moves to  checkmate Black}) 39. Kg2 Rc7 ({After} 39... Bd6 {it will take ten moves}) 40.  Qe8+ (40. g4 {Threatening 41. Qg1++ ends the game one move quicker}) 40... Kf5  41. Bf4 1-0