[Event "Bern"] [Site "?"] [Round "0"] [White "Alekhine"] [Black "Sultan Khan"] [Result "1-0"] [ECO "B13"] [Opening "Caro-Kann: Panov-Botvinnik Attack"] 1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 Nc6 6. Nf3 Bg4 7. cxd5 Nxd5 8. Bb5 a6 9. Bxc6+ bxc6 10. Qa4 Nxc3 11. Qxc6+ Bd7 12. Qxc3 Rc8 13. Qe3 Bb5 { Black has sacrificed a pawn while his compensation is White's isolated d- pawn and the fact that White's king is at the moment unable to castle.} 14. a4 Bc4 15. b3 Bd5 16. O-O { White has weakened the queenside but has been able to get his king to safety.} 16... Qb6 17. Bd2 {White is willing to trade his extra pawn for a lead in development. This is often an effective strategy in the opening.} 17... e6 { 17...Qxb3 18.Rfc1 Rxc1+ 19.Rxc1 Qxe3 20.fxe3 e6 21.Rc7 when Black's lagging development would give White a winning initiative.} 18. Rfc1 Rb8 { 18...Rxc1+ 19.Rxc1 would leave Black's back rank vulnerable.} 19. Ne5 f6 { 19...Be7 20.Nc4 Qxb3 21.Qxb3 Rxb3 22.Nd6+ Bxd6 23.Rc8+ Ke7 24.Rxh8 would leave White an exchange ahead.} 20. Nc6 {White's better development and extra pawn give him a winning advantage. White's last move takes advantage of Black's king in the center to drive Black's rook from the b-file.} 20... Ra8 { 20...Bxc6 21.Qxe6+ Be7 22.Rxc6 would leave White two pawns ahead.} 21. Na5 { With the threat of 22.Rc6 taking advantage of Black's weak e-pawn.} 21... Kf7 22. Nc4 Qb7 23. Qg3 Be7 24. a5 {White intends to post his knight on b6 which will give White complete control of the c-file.} 24... Rad8 25. Nb6 Bc6 26. Rc4 Rhe8 27. Rac1 Bb5 28. Rc7 Qe4 29. d5 { White is willing to give back the pawn to open up lines to Black's king.} 29... Kg8 {This move leads to a rapid collapse of Black's position. 29...exd5 would have been put up more resistance.} 30. Re1 Qf5 31. Bb4 Rd7 32. Rxd7 Bxd7 33. Bxe7 exd5 34. Qd6 {Black resigned because of his material deficit.} 1-0