[Event "World Championship"] [Site "?"] [Round "2"] [White "Botvinnik"] [Black "Euwe"] [Result "1-0"] [ECO "D30"] [Opening "QGD: 3.Nf3 Nf6"] 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Nc3 c6 5. e3 Nbd7 6. Bd3 Bb4 {This is a ra ther old-fashioned variation of the Semi-Slav Defense in the Queen's Gambit Declined.} 7. a3 Ba5 8. Qc2 Qe7 9. Bd2 dxc4 10. Bxc4 e5 11. O-O O-O 12. Rae1 Bc7 13. Ne4 Nxe4 14. Qxe4 a5 15. Ba2 Nf6 16. Qh4 e4 17. Ne5 { White invites a series of exchanges at e5.} 17... Bxe5 18. dxe5 Qxe5 19. Bc3 { This pin allows White to place a great deal of pressure on Black's kingside, especially at f6.} 19... Qe7 20. f3 {A strong move. Still, White could have disrupted the kingside pawn structure by capturing the knight, the threat of opening the file so that the rook can participate is much more powerful.} 20... Nd5 21. Qxe7 Nxe7 22. fxe4 {Now we have an endgame where the material is even, but where White has a bishop pair and the semi-open f-file, while Black can take some comfort in the fact that White's pawn structure has been shattered.} 22... b6 {Despite the doubled White pawns, Black is in a difficult position because of the activity of White's pieces. To exploit this, White first grabs the d-file.} 23. Rd1 {Now we examine the position, but mentally remove the Rf8 from the board. That gives us a simple mate in one with Rd8. Given this, it is easy to understand White's main threat: Rxf7!, using the power of the Ba2.} 23... Ng6 {Ok, the first plan must be abandoned. But now White can infiltrate the enemy position with tempo.} 24. Rd6 Ba6 {A good reply. Black will reposition the bishop at b5, where it more actively defends the pawn at c6.} 25. Rf2 Bb5 {The pressure on the f-file is more important than doubling rooks on the d-file .} 26. e5 {White's plan is to advance the e-pawns, using one to eliminate the opposing pawn at f7, and allowing its brother to become a passed pawn.} 26... Ne7 {Now that White has temporarily conceded control of d5, the Black knight hopes to find a new home there. 26...Rae8 permits White to carry out his plan: 27.e6 fxe6 28.Rd7 Re7 29.Bxe6+ Kh8 30.Rxf8+ Nxf8 31.Rxe7} 27. e4 {This regains control of d5.} 27... c5 28. e6 f6 {28...fxe6? 29.Rxe6!} 29. Rxb6 Bc6 {If you imagine the position with the knight gone from e7, you see that the discovered check with e6-e7 is good. So perhaps you can guess White's next move.} 30. Rxc6 Nxc6 31. e7+ Rf7 32. Bd5 {The most effective move. The pin on the Nc6 is even stronger than the one at f7, and if 32...Rc8, then on 33.Bxc6 the bishop cannot be recaptured because the pawn would queen. So Black resigned.} 1-0