[Event "World Championship"] [Site "?"] [Round "5"] [White "Lasker"] [Black "Janowski"] [Result "1-0"] [ECO "D32"] [Opening "QGD Tarrasch: 5.Nf3"] 1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 exd5 5. Nf3 Be6 {This is a weak move in the Tarrasch. Remember that in general, knights should be developed before bishops!} 6. e4 dxe4 7. Nxe4 Nc6 8. Be3 {This is a bad move. The support of d4 should have taken place by more indirect means. White should have pinned the knight at c6. 8.Bb5 Qa5+ 9.Nc3 O-O-O 10.Bxc6 bxc6 11.O-O} 8... cxd4 9. Nxd4 Qa5+ {Now Black has nothing better than interposing the queen at d2, after which the game would be a very dull affair indeed.} 10. Nc3 { 10.Qd2 Qxd2+ 11.Kxd2 Nxd4 12.Bxd4 O-O-O 13.Ke3} 10... O-O-O 11. a3 {The pin at c3 and at d4 combine to make Lasker's life miserable. Janowski could have finished up quickly with the simple 11...Bc5, but missed his chance.} 11... Nh6 {11...Bc5 12.b4 Bxd4 13.Bxd4 Qg5 14.Ne2 Nxd4 15.Nxd4 Qe5+} 12. b4 Qe5 13. Ncb5 {Just compare the activity of the knight at b5 with that of its counterpart at h6!} 13... Nf5 14. Rc1 Nxe3 15. fxe3 Qxe3+ 16. Be2 {White has nothing to fear, since Black is attacking just with a single piece. Still, Black has a good game and the White king is stuck in the center. The pin on the d-file is still valuable.} 16... Be7 {16...Bb3 17.Qd2 Qxd2+ 18.Kxd2 Kb8 19.Ke3 Bd5 20.Bf3 Nxd4 21.Nxd4 Black has all the winning chances here.} 17. Rc3 Bh4+ {This is th e critical error. A tempting check, but it overlooks the fact that there was an effective queen sacrifice. 17...Qxc3+ 18.Nxc3 Nxd4 19.Qc1 Nb3 20.Qe3 Bf6 21. Rf1 Bd4 22.Qg3 Rhe8 Black still has a lot of pressure and some winning chances. } 18. g3 Qe4 {Here the queen sacrifice would only have led to a draw. 18. .. Qxc3+ 19.Nxc3 Bf6 20.Ncb5 Bxd4 21.Nxd4 Nxd4 22.Kf2 The position is roughly level.} 19. O-O Bf6 {Lasker has survived the storm and is ready to attack on the queenside. First, however, he eliminates the annoying pin on the a1-h8 diagonal.} 20. Rxf6 gxf6 21. Bf3 Qe5 {Now the pin on the c-file allows White to capture at a7. Then it is time to clean up on the queenside.} 22. Nxa7+ Kc7 23. Naxc6 bxc6 24. Rxc6+ Kb8 25. Rb6+ Kc8 {25...Ka7 26.Rb7+ Ka6 27.Qa4+} 26. Qc1+ Kd7 27. Nxe6 fxe6 28. Rb7+ Ke8 29. Bc6+ { and Black resigned because mate is inevitable.} 1-0