[Event "Moscow"] [Site "?"] [Round "0"] [White "Zvetkov"] [Black "Smyslov"] [Result "0-1"] [FEN "2b2rk1/p3q2p/1p1p2p1/2pP1r2/2B5/6QP/PPP2RP1/5RK1 b - - 0 1"] {The bad Bishop inside the pawn chain, and with no support-point The White Bishop is inferior to the Black one because of the blocked pawn on d5. The inferiority is not yet decisive, since only one pawn is fixed on the wrong colour. We shall now see how Black strives to increase his advantage.} 1... Rxf2 2. Rxf2 Qe1+ 3. Bf1 Rxf2 4. Qxf2 Qe5 {The intention of the text is plain: Black hopes to force Pc5 and make the White Bishop less effective} ({By exchang ing Queens at this point, Black could already have brought about a pure Bishop ending, but his advantage would have been too slight to lead to a win} 4... Qxf2+ 5. Kxf2 Kf7 6. Ke3 Kf6 7. g3 Ke5 8. c4 Bf5 9. h4 $11 { And white can hold out}) 5. Qe2 Qd4+ (5... Qxd5 $4 6. Qe8+ $18) 6. Kh2 Kf8 7. c4 $2 {Such pawn moves should be made only if no other possibility remains.} ( 7. Qf3+ Kg7 8. c3 Qe5+ 9. Kg1 Bb7 10. Bc4) 7... Bf5 8. g4 $2 { Another pawn on the wrong colout!} (8. g3 {giving White the opportunity to chase the Black bishop with offers to exchange by Bh3 and Bg2. After the text move Black's advantage is of decisive signifance}) 8... Bb1 9. a3 (9. b3 Qe5+ 10. Qxe5 dxe5 $17 11. a3 Bc2 12. b4 cxb4 13. axb4 a5 14. bxa5 bxa5 15. c5 a4 16. Bc4 Bb3 $1 $19) 9... Be4 $1 10. Kg3 (10. Bg2 Bd3 11. Qe6 Qe5+ 12. Qxe5 dxe5 13. b3 Ke7) 10... Qe5+ 11. Kf2 Qf4+ 12. Ke1 Kg7 13. Qd2 Qe5 14. Qc3 {A common o ccurence in such positions. White's bad bishop keeps him on the defensive, and to put an ent to the continual threats he seizes the opportunity of exchanging Queens. But thereby he only jumps from the frying-pan into the fire, for the endgame is lost.} (14. Qe3 g5 15. Kd1 Qd4+ 16. Qxd4+ cxd4 17. b4 Kf6 $19) 14... Qxc3+ 15. bxc3 {Afull treatment of this ending would be out of place in a work on the middlegame, but we give the moves to show that the handicap of the bad bishop really is decisive.} 15... g5 $1 { fixing the white pawns on white squares} 16. Kf2 Kf6 17. Ke3 Ke5 18. Be2 Bc2 19. Kd2 Bb1 20. Ke3 h6 21. Bf3 Bc2 22. Be2 a6 $1 23. Kd2 Ba4 24. Ke3 b5 25. cxb5 axb5 26. Bf3 Bb3 27. Be2 Bc4 28. Bxc4 bxc4 29. a4 Kxd5 30. a5 Kc6 31. Ke4 d5+ 32. Ke5 d4 33. cxd4 c3 34. d5+ Kd7 35. a6 c2 36. a7 c1=Q 37. a8=Q Qf4# 0-1