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Wednesday, June 1, 2011

Middlegame Themes.

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Middlegame Themes.




Black to Play











12...Bxf2+! This immediate bishop sacrifice is necessary and has occurred in several games. 13.Kxf2 Qf6+ 14.Rf3?! White has a better defence in 14.Kg3 when Black can repeat the position if he likes with 14...Qe5+ 15.Kf2 and now 15...Qf6+. But it looks like he can also play for more with 15...Qf4+; for example, 16.Rf3 exf3 17.Nxd3 Qxh2 18.Bxc6+ bxc6 19.Qxf3 Ne7 gives Black a rook and pawn for the two minor pieces plus ongoing attacking chances. Two other games featured the move 14.Nf3 at this point, but Black then recovers all of his material with much the better game. For example, 14...Nge7 (14...exf3 15.Bxc6+ bxc6 16.Qxf3 Qxf3+ 17.Rxf3 Bg6 was just a bit better for Black in Kreie,G-Cygon,J, Detmold 1976.) 15.Na3 0–0 16.Nc2 Ne5 17.Nce1 exf3 18.gxf3 N7g6 19.Qb3+ Kh8 20.Qxb7 Nf4 and Black had a winning attack in Voitsekhovsky,S-Yandemirov,V, Moscow 1996. 14...exf3 15.Bxc6+ bxc6 16.Nxd3 fxg2+ 17.Kg1 17.Kxg2 Qg6+ 18.Kf2 Qxd3 leaves Black the exchange up for nothing. 17...Ne7 18.Qe2 0–0 19.Qxg2 Qf5 20.Qe2 20.Nf2 Nd5 21.d4 Rae8 would also leave White defenceless. 20...Ng6 0–1