[Event "World Open"]  [Date "1974"]  [Round "?"]  [White "Bent Larsen"]  [Black "Arnold Denker"]  [Result "1-0"]  [ECO "A17"]  [Annotator "ATH"]  [PlyCount "83"]  [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. c4 Nf6 2. Nc3 e6 3. Nf3 Bb4 4. Qc2 O-O 5. a3 Bxc3 6. Qxc3 d6 7. g3 e5 8. Bg2  Nbd7 ({Lein-Lengyel, Sochi 1967, saw} 8... Re8 9. O-O a5 10. d3 Nc6 $11 {  and a draw in 49 moves.}) ({More recently, Jakovljevic-Kosic, Tivat 2011 went}  8... c5 $5 9. b4 Nc6 10. O-O Re8 11. d3 h6 (11... e4 $1 $11) 12. Bb2 Bg4 13. e3  Qd7 14. b5 $14 {with White winning in 51 moves.}) 9. O-O Re8 10. b4 a5 11. Bb2  Nb6 12. Qc2 Bd7 13. b5 $14 c5 $6 (13... Qc8) 14. Ng5 (14. d3 {is simpler and  better. Something about not moving the same piece twice in the opening.}) 14...  h6 15. Ne4 Nxe4 16. Bxe4 Be6 $6 (16... Qc8) 17. Bxb7 Rb8 (17... Bxc4 $1 18. Bc6  (18. Bxa8 Qxa8 19. d3 Bxb5 20. Rab1 Ba4 $44) 18... Bxe2 19. Rfe1 Bh5 20. d4 $1  cxd4 21. Bxd4 $16) 18. Bc6 Bxc4 19. d3 Be6 20. f4 $2 (20. Bxe8 $18) 20... exf4  (20... Bd7 $1 $11) 21. Bxe8 Qxe8 22. gxf4 Qxb5 23. f5 Bb3 24. Qd2 Na4 25. f6 $6  (25. Rf3 Nxb2 26. Qxb2 f6 27. e4 $14) 25... Nxb2 26. fxg7 (26. Qxb2 g6 $11)  26... Qd7 27. Rf4 $2 ({Avoiding the forced draw after} 27. Qxh6 Qg4+ 28. Kh1  Bd5+ 29. e4 Bxe4+ 30. dxe4 Qxe4+ 31. Kg1 Qg4+ $11 {; it's risky but Larsen had  a reputation for daring to uphold.}) 27... Qh3 $2 (27... Qe7 28. Rg4 Qe6 29.  Rg3 Na4 30. Rf1 c4 $1 31. dxc4 Bxc4 $19) 28. Qxb2 Qe3+ 29. Rf2 a4 $2 (29...  Qg5+ 30. Kf1 Rb7 $16) 30. Qf6 $18 Be6 31. Qf4 Qxf4 32. Rxf4 Rb2 33. Kf2 Kxg7  34. Rxa4 d5 35. Ra5 c4 36. dxc4 dxc4 37. a4 Kf6 38. Rb5 Rd2 39. Rc5 Bg4 40.  Rxc4 Bxe2 41. Rf4+ Ke5 42. Ke3 1-0