[Event "Mannheim"] [Site "?"] [Round "0"] [White "Alekhine"] [Black "Fahrni"] [Result "1-0"] [ECO "C13"] [Opening "French: Classical"] 1. e4 e6 2. d4 d5 { The French Defense which gives Black a solid yet somewhat passive position.} 3. Nc3 Nf6 4. Bg5 Be7 5. e5 Nfd7 6. h4 {An interesting pawn sacrifice which has been named the Alekhine-Chatard attack . The main idea of the sacrifice is to gain a lead in development.} 6... Bxg5 7. hxg5 Qxg5 8. Nh3 { White develops the knight with tempo.} 8... Qe7 9. Nf4 Nf8 {Going backward s with the knight is a mistake. 9...Nc6 Developing his pieces is a better idea. For example... 10.Qd2 b6 11.Bb5 Bb7 When Black is completing his development while maintaining his pawn advantage.} 10. Qg4 { With this move White has the double threat of 11.Qxg7 and 11.Nfxd5.} 10... f5 { 10...g6 11.Nfxd5 exd5 12.Qxc8+ Qd8 13.Qxb7 would give White a material advantage.} 11. exf6 gxf6 12. O-O-O {12.Nfxd5 exd5+ Since Black has opened the e-file the White king is in check after capturing the knight.} 12... c6 13. Re1 Kd8 {Played with the idea of having the king protect the bishop on c8.} 14. Rh6 {A good move which puts pressure on Black's f-pawn.} 14... e5 15. Qh4 Nbd7 16. Bd3 e4 17. Qg3 Qf7 {17...Qd6 18.Bxe4 dxe4 19.Rxe4 when Black would have no good defense against White's intended 20.Qg7 winning the rook.} 18. Bxe4 { White sacrifices a piece in order to open up the position. After which White's development advantage decides the game.} 18... dxe4 19. Nxe4 Rg8 { 19...Qxa2 20.Nxf6 Nxf6 21.Qg7 would leave Black defenseless.} 20. Qa3 { The control of the dark squares by White's queen decides the game.} 20... Qg7 { 20...Qe7, trying to challenge White's queen would fail to 21.Qa5+ b6 22. Qc3 when White's numerous threats give him a winning position.} 21. Nd6 Nb6 { 21...Qxh6 would allow White to win material.} 22. Ne8 { With this move White forces the win of the Black queen.} 22... Qf7 23. Qd6+ { Black resigned since it's mate in two.} 1-0