Kuich,G (1910) - Castagna,R (2175) [A24]
Bieler Meisterschaften, MT 4.Runde, 1998
[Fritz 5.00 / Ph. Corbat]

1.c4 Sf6 2.Sf3 g6 3.g3 Lg7 4.Lg2 0–0 5.0–0 d6 6.Sc3 e5 7.d3 Te8 8.Sd2 c6 9.Sde4 Sxe4 10.Sxe4?!N

[10.dxe4 a6 11.a4 a5 12.Le3 Sa6 13.Dd2 Le6 14.b3 Sc5 15.Tab1 Dc7 16.Tfd1 Tad8 17.Dc2 Lc8 18.Lg5 Td7 19.Ld2 h5 20.h3 Lf6 21.Sa2 Db6 22.Le3 Dd8 23.Dc3 Se6 24.Ld2 h4 25.Dxa5 hxg3 26.fxg3 De7 27.Dc3 Tdd8 28.Tf1 d5 29.cxd5 cxd5 30.exd5 Sd4 31.Kh2 e4 32.Dc4 Lf5 33.Le3 Tc8 34.Db4 Sxe2 35.Dxe7 Txe7 36.Tf2 Sxg3 37.Kxg3 Le5+ 38.Lf4 e3 39.Te1 exf2 Skembris,S-Yurtaev,L/Moscow olm GRE-KGZ 1994/EXP 44/½–½ (72)]

10...h6 Prevents intrusion on g5 11.Sc3 Le6 12.e4 Sd7 13.Le3 Sf6 14.h3 Covers g4 14...Dd7 15.Kh2 d5 16.exd5 cxd5 17.Sxd5 Sxd5 18.cxd5 Lxd5 19.Lxd5 Dxd5 20.Dd2 Kh7 21.f4 exf4 22.Lxf4 Tad8 Attacking the isolated pawn on d3 * 23.Tfd1?

[23.Tac1 Dxd3 24.Dxd3 Txd3 25.Tc2-/+]

23...Df3 24.Te1 Only move 24...Ld4?

[24...Txd3 25.Dg2 Dxg2+ 26.Kxg2 Lxb2 27.Txe8 Lxa1 28.Te7 Kg7 29.a4 Ta3 30.Txb7 Txa4–+]

[25.Lxh6?? a poisoned pawn 25...Lf2 26.Df4 Dxf4 27.Lxf4 Lxe1–+; 25.Tab1!? g5 26.Lc7 Tc8 27.Ld6-/+]

[25...Lf6-/+]

[26.Lc7?? gxh4 27.gxh4 Lg1+ 28.Txg1 Txd3 0–1]

[27...Le5! 28.Dg2 (28.Txe5? Txe5 29.Lxd8 Te2+ 30.Dxe2 Dxe2+ 31.Kh3 Dxb2–+; 28.Lh4?? Td4 29.Txe5 Txe5 30.Te1 Th5 31.Kg1 Tdxh4 32.gxh4 Txh4 33.Dg2 Tg4 0–1; 28.Te3? Dh5+–+; 28.Lf4?? Kg6 0–1) 28...Dh5+ (28...Txd3?! 29.Dxf3 Txf3 30.Lf4 Lxb2 31.Txe8 Lxa1 32.Le3-/+) 29.Dh3 Lxg3+ 30.Kg2 Dxh3+ 31.Kxh3 Txe1 32.Txe1 Txd3-/+ (32...Lxe1? 33.Lxd8=) ]

28.Lh4 Lf2!? Exerts pressure on the isolated pawn * 29.Dd1 Df5

[=29...Dxd1 30.Texd1 Te2=]

[31...Dh5! 32.Dg2 Te3 33.Dxb7+ Kh6 34.Kg2=]

32.Dh3! securing the lead 32...Dxd3?

[better is 32...Dh5 33.Tf1 Te2 34.Dd7+ Kg6 35.Kh3 Df3±]

38.Dg2?? overlooking an easy win

[38.Df3! +- and White wins 38...Dc2+ (38...Lg1+ 39.Kg2 Dxf3+ 40.Kxf3+-) 39.Dg2+-]

38...Kg5! seul coup amenant la nulle 39.Tf1 Dh7+ 40.Dh3 The mate threat is Qxh7 40...Dc2+ ½–½