[Event "Berlin"] [Site "?"] [Round "0"] [White "Lasker"] [Black "Janowsky"] [Result "1-0"] [ECO "D32"] [Opening "QGD Tarrasch: 4.Nf3"] 1. d4 d5 2. c4 e6 3. Nc3 c5 4. Nf3 {These days, capturing at d5 is considered obligatory if White wants to play for a win.} 4... Nf6 {Wrong knight. 4...Nc6 5.cxd5 exd5 6.dxc5 d4 shows why Black needs a knight at c6.} 5. cxd5 exd5 6. Bg5 {This position is advantageous for White.} 6... Be6 { Black is forced to defend the pawn at d5.} 7. e3 Nc6 8. Be2 Be7 9. dxc5 Bxc5 10. O-O O-O {Both sides have completed the initial deployment of their forces and are now ready to do battle. The immediate target is the pawn at d5, but White first occupies an important open file.} 11. Rc1 Be7 { Releasing the pin on the knight and getting out of the way of the rook on c1.} 12. Nd4 Rc8 13. Qd2 Ne4 { Black tries to free his game by exchanging, but his pieces end up badly placed. } 14. Nxe4 dxe4 15. Bxe7 Qxe7 16. Nxc6 bxc6 17. Qa5 { White takes aim at Black's weak pawns on the queenside.} 17... Rfd8 18. Rfd1 Bd5 { 18...Rxd1+ 19.Rxd1 White controls the d-file and the important square at d8.} 19. b4 Rd6 {This loses a piece. Black didn't notice that the rook on c8 is no longer protected, and that the pawn at c6 is therefore pinned. Do you see the winning move?} 20. Rxd5 Rxd5 21. Qxd5 {Taking advantage of Black's weak back rank. 21...cxd5 22 Rxc8+ forces Black to give back the queen and White remains a piece up.} 21... Qxb4 22. Rxc6 {After 22...Qe1+ White can use his extra bishop to cover his back rank. So Black resigned.} 1-0