[Event "Budapest"] [Site "?"] [Round "1"] [White "Bronstein"] [Black "Stahlberg"] [Result "0-1"] [ECO "C13"] [Opening "French: Classical"] {The exchange offset by a pawn and a preponderance in the centre} 1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Be7 5. e5 Nfd7 6. h4 c5 7. Bxe7 Qxe7 8. Nb5 O-O 9. Nc7 cxd4 10. Nxa8 f6 11. Qxd4 Nc6 12. Qd2 fxe5 13. O-O-O Nf6 14. f3 Qd6 15. Ne2 Bd7 16. Nc3 Rxa8 {It is a well know fact that the owner of a strong pawn centre often gets automatic attacking chaces. The attempt to achieve such a centre by an Exchange sacrifice is nothing new, and in practise it has been repeatedly successful. Nevertheless, its correctness must be questioned as we shall show in the further course of this game.} 17. Ne4 {Logical and strong. To give the opponent no attacking chacens, White is aiming to exchange minor pieces.} 17... Qe7 18. Nxf6+ Qxf6 19. Bb5 Nb8 $1 { Understandably Black prefers to exchange a bad Bishop rather than a Knight} 20. Qb4 Bxb5 21. Qxb5 Qf7 22. c4 {The pawn centre is demolished. White's last move has weakend d4, and his King's position is too open for hims to achieve his aims} (22. c3) 22... Nc6 $1 (22... Qc7 23. Qe8#) (22... dxc4 23. Rd8+) 23. cxd5 Nd4 24. Qd3 (24. dxe6 $4 Qf4+) (24. Rxd4 exd4 25. dxe6 Qxe6 26. Kb1 Qg6+ $17) 24... exd5 25. Rhf1 {The only possibility of undermining the position of the Knight consists of the pawn advance Pf4} 25... Qf4+ 26. Kb1 Rd8 27. g3 $1 { With this pawn offer, White succeds in carrying out his plan} 27... Qxg3 28. f4 Qxd3+ 29. Rxd3 Nc6 30. fxe5 Nxe5 31. Rd4 Nc6 32. Rdf4 Ne5 {Black can not allow the invasion at f7. In material, Black has not done badly, with two pawns for the Exchange; but positionally things are not so good for him, with the White rooks connected, and the open files at their disposal. White is justified in playing for a wing} 33. Rf5 $2 (33. Rd4 Nc6 34. Rd2 d4 35. Rdf2 Ne5) 33... Nc4 34. R1f2 $2 (34. R5f2 d4 35. b3 Ne3 36. Re1 d3 37. Rd2) 34... d4 35. b3 $2 (35. Rc5 $1 d3 36. Rxc4 d2 37. Rxd2 Rxd2 38. Rc8+ Kf7 39. Rc7+ Ke6 40. Rxb7 Rh2 41. Rb4 $11) 35... d3 $1 36. bxc4 d2 37. Rxd2 Rxd2 38. Rb5 b6 39. Re5 Rd4 40. c5 Rxh4 41. Re8+ Kf7 42. Ra8 Rb4+ 43. Ka1 bxc5 44. Rxa7+ Kf6 45. Ra5 g5 46. Rxc5 g4 0-1