C13 Morozevich Alexander (RUS) - Korchnoi Viktor (SUI) Biel (Switzerland) 2003

[#]1.e4 e6 2.d4 d5 3.¤c3 ¤f6 4.¥g5 ¥e7 5.e5 ¤fd7 6.h4 c5 7.¥e7 ¢e7 8.dc £c7 9.f4 £c5 10.£d2 ¤c6 11.¤f3 ¤b6 12.a3! By threatening to capture the black queen, White forces the move 12...a5 which weakens the b5-square. 12...a5 13.h5 h6 14.O-O-O ¥d7 15.¢b1 a4 16.¦h3 ¦ac8 17.¤b5!?

17...¦hd8?

[Black would have not lose after 17...¤e5! as some commentators stated, since after 18.¤e5 (White can win an exchange for a pawn by 18.¤a7 , but then the outcome would have been unclear.) 18...¥b5 19.¦c3 ¥c4 20.¥c4 dc! 21.¦c4 Black survives: 21...¦hd8!!]

18.¤d6 ¦b8 19.¦g3 ¢f8 20.£d3! The black king has escaped from the center but he finds himself defenseless. Black cannot refute the threats of £h7 and ¤xf7, so he resigned. [1:0]

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