[Event "URS"] [Site "?"] [Date "1982.??.??"] [Round "?"] [White "Petrosian, A."] [Black "Palatnik, S."] [Result "0-1"] [ECO "D94"] [Annotator "Fritz 11 (57s)"] [PlyCount "74"] [EventDate "1982.??.??"] {D94: Grünfeld: 4 Nf3 Bg7 5 e3} 1. d4 d5 2. c4 c6 3. e3 Nf6 4. Nc3 g6 5. Nf3 Bg7 6. Be2 O-O 7. O-O Be6 8. cxd5 cxd5 9. Qb3 Qb6 10. Qa3 Nc6 11. Na4 Qc7 12. Bd2 Bg4 13. Rac1 Ne4 14. Rfd1 e5 15. Bb4 Rfe8 16. dxe5 Rad8 17. h3 Bxf3 18. gxf3 {last book move} Nxf2 19. Kxf2 Qxe5 {White wins a piece} 20. f4 {White threatens to win material: f4xe5} Qf6 21. Bd2 d4 22. Bf3 (22. Kg2 $142 $5 g5 23. Bf3 dxe3 24. Bxe3 gxf4 25. Bf2 Qg5+ 26. Kh1 $16) 22... Bf8 $11 23. Qb3 dxe3+ 24. Bxe3 Nd4 25. Bxd4 Rxd4 26. Nc3 $2 (26. Qb5 Rxf4 27. Qxe8 Rxf3+ 28. Ke2 Rf2+ 29. Ke1 $19) 26... Qxf4 $4 {Black loses the upper hand} (26... Rb4 $142 $5 27. Qc2 Rxf4 $19) 27. Ne2 (27. Nd5 $142 {would keep White alive} Qh2+ 28. Kf1 $11) 27... Qh2+ $17 28. Kf1 Rb4 29. Qd5 $2 (29. Qc3 $142 Rb5 30. Qd4 $17) 29... Rxb2 $19 30. Rd2 Rxd2 (30... Re5 $142 $5 31. Rxb2 Rxd5 32. Bxd5 Qxh3+ 33. Ke1 Ba3 $19) 31. Qxd2 $17 Qxh3+ 32. Bg2 Qf5+ (32... Qg4 33. Ng1 (33. Bxb7 $4 {the pawn must remain untouched} Rxe2 34. Qxe2 Qf4+ 35. Bf3 Qxc1+ 36. Qe1 Qg5 $19) 33... b6 34. Bf3 $19) 33. Qf4 Qxf4+ 34. Nxf4 Bh6 35. Rc4 b5 { Black threatens to win material: b5xc4} 36. Rd4 Bxf4 37. Rxf4 Re5 0-1