Karpov vs Korchnoi
[Event "Merano"] [Site "?"] [Round "0"] [White "Karpov"] [Black "Korchnoi"] [Result "1-0"] [ECO "C70"] [Opening "Spanish: 4.Ba4"] 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Nbd2 {White wishes to exchange Black's strong knight on e4 and is willing to give up his Bb3 to ...Nc5 and ...Nxb6.} 9... Nc5 10. c3 d4 11. Bxe6 Nxe6 12. cxd4 Ncxd4 13. Ne4 {White's knight is strong on this square and gives him some initiative. This should not be too troubling for Black, but Korchnoi was confused and thought for over an hour about his response.} 13... Be7 14. Be3 Nxf3+ {Black trades off his best piece and activates White's queen for him, but the alternative wasn't inviting. 14...c5 15.b4 This move gives White a powerful initiative. 15...Nxf3+ 16.Qxf3 And the attack on c5 is still a problem for Black.} 15. Qxf3 O-O 16. Rfd1 Qe8 {This is a blunder. Black locks in his own kingside and puts his queen on a bad square. 16...Qc8 17.Rac1 Will keep some initiative for White.} 17. Nf6+ { White takes immediate advantage of Black's misplaced pieces on the kingside.} 17... Bxf6 { If 17...gxf6 18.exf6 Bd6 19.Rd5, White will overwhelm the Black monarch.} 18. exf6 Qc8 {Black allows his kingside to be shredded, but 18...g6 loses the exchange to 19.Bh6.} 19. fxg7 Rd8 { After 19...Kxg7 White has a sacrificial win by 20.Bh6+} 20. h4 { White prepares to defend his g7 pawn by h4-h5-h6.} 20... c5 21. Rac1 Qc7 22. h5 Qe5 23. h6 Qxb2 24. Rd7 { White continues his attack by combining mating threats on f7 and the back rank. } 24... Rxd7 25. Qxa8+ Rd8 26. Qxa6 Qe2 27. Rf1 Rd1 28. Qa8+ Rd8 {28...Nd8 29. Rxd1 Qxd1+ 30.Kh2 Qh5+ 31.Kg3 Qg6+ 32.Kh4 Qf6+ 33.Kh3 And after g4 and Kg2 White will escape from further checks.} 29. Qc6 b4 30. Qa4 Qd3 31. Rc1 Qd5 32. Qb3 Qe4 33. Qc2 Qxc2 34. Rxc2 f5 35. f4 Kf7 36. g4 { White plays actively to remove all obstacles to his kingside pawns.} 36... Rd5 {36...fxg4 37.f5} 37. gxf5 Rxf5 38. Rd2 Rf6 39. Rd7+ Kg8 40. f5 Rxf5 41. Re7 Nxg7 42. Rxg7+ Kh8 43. Rc7 Kg8 44. Bxc5 Rg5+ 45. Kf2 Rg6 46. Be3 { Black has no chance of eliminating White's two pawns, so he resigns.} 1-0
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OpeningC70 — Spanish: 4.Ba4