[Event "Riga"] [Site "?"] [Round "0"] [White "Tal"] [Black "Segal"] [Result "1-0"] [ECO "A10"] [Opening "English: Anglo-Dutch"] 1. c4 f5 2. Nf3 Nf6 3. g3 d6 4. d4 e6 5. Bg2 Be7 6. O-O O-O 7. Nc3 c6 { The main drawback of Black's opening strategy is the weakness at e6, which, appropriately, will prove to be the decisive factor in this game.} 8. Qc2 a5 { The purpose of such moves is generally to take control of the b4 square, and often to provide direct assistance to a knight at b4, or, if White plays d5, to place the knight at c5, where White will be unable to chase it with b4.} 9. e4 fxe4 10. Nxe4 Bd7 {White now has control of the center and somewhat more space. This gives him the "right" to attack.} 11. h4 Na6 12. Nfg5 { The knight keeps one eye on h7 and the other on e6.} 12... g6 13. Bh3 { The pressure mounts.} 13... Qc8 14. Rd1 e5 {Black solves the problem of the weak pawn at e6 but the square remains vulnerable.} 15. Bxd7 Nxd7 16. h5 Qe8 { What would have happened had Black captured the pawn instead? 16... gxh5 17. Nxd6 Bxd6 18.Qxh7++} 17. Ne6 { The weak square is occupied at last. The rook has no useful flight square.} 17... gxh5 {17...Rf3 18.Kg2 Qf7 19.N6g5} 18. Nxf8 Qxf8 { White has won the exchange, but the kingside attack has fizzled.} 19. c5 { A clever move which opens up a new attacking diagonal (a2-g8).} 19... Nb4 { 19...dxc5 20.Qb3+ Kh8 21.Qxb7} 20. Qb3+ d5 21. a3 Kh8 {Black breaks the pin on the pawn at d5, so that the knight can be captured on e4.} 22. Nd6 { Black resigned, since he will lose more material.} 22... Na6 23. Qxb7 Nf6 24. dxe5 Ne4 25. Be3 Naxc5 26. Bxc5 Nxc5 27. Qxc6 Ne4 28. Nxe4 dxe4 29. Qxe4 1-0