[Event "Soviet Championship"] [Site "?"] [Round "0"] [White "Petrosian"] [Black "Tolush"] [Result "1-0"] [ECO "A05"] [Opening "Reti: 1...Nf6"] 1. Nf3 Nf6 2. c4 e6 3. Nc3 d5 4. d4 c6 5. cxd5 exd5 6. Qc2 Bd6 7. Bg5 { The White bishop pins the knight.} 7... O-O 8. e3 Bg4 9. Ne5 {The White knight takes up a powerful post in the center. While, at the same time threatening to win a piece.} 9... Bh5 10. f4 {10. f4 is a multipurpose move which reinforces the White knight and gains space on the king side.} 10... Qa5 11. Bd3 { 11. Bxf6 gxf6 ,doubling the Black f-pawns, is also playable. However, 11.Bd3 developing another piece into the kingside attack is better. White is now threatening to win a pawn.} 11... h6 12. Bxf6 { 12. Bxf6 breaks open the Black's king position.} 12... gxf6 13. g4 {13.g4 is a beautiful way to continue the kingside attack. Although, at a first glance it appears that White has forgotten about his knight.} 13... fxe5 14. fxe5 Be7 15. O-O-O Bg5 {15...Bg6 16.Bxg6 fxg6 17.Qxg6+ Kh8 18.Qxh6+ Kg8 19.Qe6+ Rf7 20.Rhf1 would win the Black rook.} 16. gxh5 Kh8 17. Qf2 f5 18. h4 Be7 19. Qf4 { Faced with a mating attack Black resigned.} 1-0