[Event "USSR Championship, Moscow"] [Site "https://lichess.org/study/ijassISF/6tV8Fu15"] [Date "1956.??.??"] [White "Spassky, B."] [Black "Taimanov, M."] [Result "*"] [Annotator "Johan Hellsten"] [FEN "1rbq1rk1/2p1bppp/p1n2n2/1p2p3/P2pP3/2PP1N2/1PBNQPPP/R1B2RK1 b - - 0 11"] [Variant "From Position"] [ECO "?"] [Opening "?"] [SetUp "1"] [Source "https://lichess.org/study/BDbiLftO/OCYumlmC"] [Orientation "black"] { In a Spanish battle Spassky has just played a2-a4, which is a typical move in this opening. However, on this occasion it lets Black carry out a favourable alteration of the pawn structure. } 11... dxc3! 12. bxc3 b4! { A strong pawn advance with the aim of softening up the d4-square for the black pieces. } 13. Nc4 { Now each side has "his" weakness, but as the further course of the game will show us, the central ones are usually worth more. } { [%csl Gc4][%cal Gf3e5] } (13. Bb2 { Black could consider } 13... Re8!? { , overprotecting e5; e.g. } 14. Nc4 Bg4! 15. h3 Bxf3 16. Qxf3 bxc3 17. Bxc3 Bc5! { , followed by Bd4 with a pleasant advantage. }) (13. cxb4 Nxb4 { [%csl Ge5] } 14. Bb1) 13... Bg4! { Enabling a timely ...Bxf3 to eliminate a defender of the d4-square. } { [%cal Gh2h3,Gg4f3] } (13... bxc3?! 14. Ncxe5 { with complications. }) 14. Bb2 Bc5 15. Rad1 (15. cxb4 Bxf3 16. Qxf3 Nxb4 17. Rac1 Bd4! { the d4-square also remains in Black's command. }) 15... bxc3 16. Bxc3 Nd4 (16... Bd4 { ; for example, } 17. Bd2 Nh5! { preparing 18...Nf4. Here } 18. h3? { fails to } 18... Ng3 { . }) 17. Bxd4 Bxd4 18. h3 Bxf3 19. Qxf3 Nd7! { Time to improve the knight, which is in fact the most suitable occupant of the d4-square. } { [%csl Gd4,Gb4,Gc5,Gc3] } 20. Rb1 Qg5! { Activating the queen and connecting the rooks. } 21. Kh1 g6 22. Ne3 Nc5 23. Nc4 (23. Nd5?! c6 { . }) 23... Kg7! { . Taimanov keeps slowly improving his position. The game continued } 24. Qe2 Ne6 25. g3 Bc5! 26. Rxb8 Rxb8 27. Kh2 Qf6 28. Kg2 h5 29. h4 Nd4 30. Qd1 Qe6 { with a clear advantage for Black, who went on to win the game. } 31. Qd2 Qf6 32. Bd1 Rb1 33. Be2 Rb4 34. Bd1 Rb1 35. Be2 Rxf1 *