[Event "Match Game"] [Site "?"] [Round "10"] [White "Botvinnik"] [Black "Bronstein"] [Result "0-1"] [ECO "A40"] [Opening "Queen's Pawn: 1...e6 2.Nf3"] 1. d4 e6 2. Nf3 Nf6 3. c4 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. b3 d5 8. cxd5 exd5 9. Bb2 Nbd7 10. Nc3 Re8 11. Ne5 Bf8 12. Rc1 {This pawn sacrifice is not without basis: White reckons on seriously weakening Black's castled position} 12... Nxe5 13. dxe5 Rxe5 14. Nb5 Re7 15. Bxf6 gxf6 16. e4 $2 {Ill judged} (16. Qd4 $1 c6 17. Qg4+ Bg7 18. Nd4 {Good chances for White}) 16... dxe4 17. Qg4+ Bg7 18. Rfd1 Qf8 {Bronstein gives back one of his two extra pawns. This is a first principle of good defense} 19. Nd4 Bc8 20. Qh4 f5 21. Nc6 (21. Bh3 Bxd4 22. Rxd4 Be6 23. Rxc7 $1 Rxc7 24. Qg5+ Qg7 25. Rd8+) 21... Re8 22. Bh3 Bh6 23. Rc2 e3 24. fxe3 Bxe3+ 25. Kh1 Be6 26. Bg2 a5 27. Bf3 Kh8 28. Nd4 Rad8 29. Rxc7 (29. Qf6+ Qg7 30. Qxg7+ Kxg7 31. Nxe6+ fxe6 32. Rxc7+ Kf6 $1 {Despite the presence of opposite coloured Bishops, Black has good winning chances}) (29. Nxe6 Rxd1+ 30. Bxd1 Rxe6 {Black must win in the long run}) 29... Bd5 $1 30. Re1 (30. Qf6+ Kg8) (30. Rf1 Qd6 31. Nxf5 Bxf3+ 32. Rxf3 Qd1+ 33. Kg2 Rd2+ 34. Kh3 Rxh2+ $1 35. Kxh2 Qg1+ 36. Kh3 Qh1+ 37. Kg4 Rg8+ 38. Kh5 Rg5+ 39. Kh6 Rxg3+ 40. Rxe3 Rg6+ 41. Kh5 Qd1+) 30... Qd6 31. Rc2 (31. Rc3 f4 $1 (31... Re4 32. Rcxe3 Rxh4 33. Re8+ Kg7 34. Nxf5+)) 31... Re4 $1 32. Bxe4 Bxe4+ 33. Qxe4 fxe4 34. Nf5 Qb4 35. Rxe3 Rd1+ 36. Kg2 Rd2+ 37. Rxd2 Qxd2+ 38. Kh3 Qf2 39. Kg4 f6 { Depriving t he White King of g5, and so threatening ... Ph5+ removing the guard of Nf5} 0-1