[Event "San Sebastian"] [Site "San Sebastian"] [Round "0"] [White "Rubinstein"] [Black "Schlechter"] [Result "1-0"] [ECO "D02"] [Opening "Queen's Pawn: 2.Nf3 Nf6"] 1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. Nc3 c5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 cxd4 8. cxd4 Bb4+ 9. Bd2 {As the opening comes to an end and the middlegame phase begins one often has to decide whether or not to initiate exchanges. The familiar rule that the side with less freedom of movement does well to seek to seek exchanges is not infallible. In the present case White has a great superiority in terrain and by the above mentioned rule Black should have welcomed the exchange of Queens; but as we shall see, this is the very exchange which favours White} 9... Qa5 $2 {Experience has shown best is Bxd2+} (9... Bxd2+ 10. Qxd2 O-O 11. Bc4 Nc6 {even chances}) 10. Rb1 $1 Bxd2+ (10... Nc6 11. Rxb4 Nxb4 12. Qb1 Qxa2 13. Qxa2 Nxa2 14. Bc4 $18) 11. Qxd2 Qxd2+ 12. Kxd2 $1 {Black's object has been obtained, but it is White who is left with the advantage in development sufficient to give him a powerful initiative} 12... O-O (12... Ke7 { Giving Black better chances of survival by keeping his King in the centre}) 13. Bb5 $3 {An uncommonly fine move, the object of which is to force the weakening which follows} 13... a6 { This is unavoidable if Black is to get his Queenside pieces out} 14. Bd3 Rd8 15. Rhc1 b5 {Permitting the invasion} (15... Nc6 16. Ke3 Kf8 17. Rb6) 16. Rc7 Nd7 17. Ke3 Nf6 18. Ne5 Bd7 19. g4 $1 {White begins the attack} 19... h6 (19... -- 20. g5) (19... g5 20. h4 h6 21. hxg5 hxg5 22. f4 gxf4+ 23. Kxf4 {Kmoch}) ( 19... Be8 20. g5 Nh5 (20... Nd7 $2 21. Nc6) 21. Be2 f6 22. gxf6 gxf6 $2 (22... Nxf6 23. Rg1 g6 24. h4 $16 { White has both a positional advantage and Kingside attack as well}) 23. Bxh5 fxe5 24. Bxe8 exd4+ 25. Kd3 Rxe8 26. Rg1+ Kh8 27. Kxd4 $1) 20. f4 Be8 21. g5 hxg5 22. fxg5 Nh7 (22... Nd7 23. Nc6) (22... Nh5 23. Be2) 23. h4 Rdc8 24. Rbc1 Rxc7 25. Rxc7 Rd8 26. Ra7 f6 (26... Rd6 27. Ra8 Kf8 28. Nxf7 $1 Kxf7 29. g6+ $1 $18) 27. gxf6 gxf6 28. Ng4 Bh5 29. Nh6+ Kh8 30. Be2 $1 { Taking advantage of the fact that Black's bishop is tied to the defence of f7} 30... Be8 31. Rxa6 {This settles is. The rest is not difficult} 31... Kg7 32. Ng4 f5 33. Ra7+ Kh8 (33... Kg6 34. h5+ Kg5 35. Rg7+ Kh4 36. exf5 exf5 37. Nh6 Nf8 38. Nxf5+ Kh3 39. Bf1+ Kh2 40. Rg2+ Kh1 41. Ng3#) 34. Ne5 fxe4 35. Bxb5 Nf6 36. Bxe8 Rxe8 37. Kf4 Kg8 38. Kg5 Rf8 39. Kg6 -- 40. Rg7+ Kh8 41. Nf7+ 1-0