[Event "World Championship"] [Site "?"] [Round "2"] [White "Botvinnik"] [Black "Smyslov"] [Result "1-0"] [ECO "E40"] [Opening "Nimzo-Indian: Rubinstein"] 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Nge2 Ba6 6. a3 Be7 7. Nf4 d5 { Black has chosen an aggressive opening plan, placing immediate pressure on White's position. This course is justified by the fact that his development is equal to that of his opponent.} 8. cxd5 Bxf1 9. Kxf1 { 9.dxe6 Ba6 10.exf7+ Kxf7 11.Qb3+ Ke8 12.Ne6 Qd7 13.Nxg7+ Kd8 14.Ne6+ Kc8} 9... exd5 {9...Nxd5 10.Ncxd5 exd5 11.Qh5 c6 12.Ne2 g6} 10. g4 {This was a portion of Botvinnik's home cooking. In World Championship matches both players usually come well-prepared, working with a team of analysts for a period of months. And better opening preparation can turn into points!} 10... c6 11. g5 Nfd7 {White continues the kingside aggression. The weaknesses on the light squares are not so important because Black does not have a light-squared bishop.} 12. h4 Bd6 13. e4 {White now controls the center.} 13... dxe4 14. Nxe4 Bxf4 15. Bxf4 O-O { Black must castle before White can play Nd6, but now the pawnstorm continues.} 16. h5 Re8 17. Nd6 Re6 18. d5 {The pawn cannot be captured, but the rook has no comfortable retreat square. It is not easy to see why 18...cxd5 19.Qxd5 Na6 is unplayable, but try to find the solution yourself.} 18... Rxd6 {18...cxd5 le ads to a long forcing variation which wins for White: 19.Qxd5 Na6 20.Nxf7 Kxf7 21.g6+ hxg6 22.hxg6+ Ke7 23.Bd6+ Kf6 24.Qf3+ Kxg6 25.Rg1+ Kh7 26.Qf5+ Kh8 27. Rh1+ Kg8 28.Qxe6+} 19. Bxd6 Qxg5 {It looks like Black has weathered the storm. He is down the exchange but has an extra pawn and the White king position looks suspect. Botvinnik now plays an excellent move which takes control of a number of key squares.} 20. Qf3 Qxd5 { Now we have an endgame, where the security of White's king is not an issue.} 21. Qxd5 cxd5 22. Rc1 Na6 23. b4 h6 24. Rh3 Kh7 25. Rd3 Nf6 {The bishop t d6 dominates the knight at a6. Now White wins another pawn and the rest is easy.} 26. b5 Nc5 27. Bxc5 bxc5 28. Rxc5 Rb8 29. a4 Rb7 30. Rdc3 1-0