Nº29 Sergey Osintsev

Win

Sergey Osintsev (Russia)

wKg1,Bc1,Ra3,h3,Pg5/bKg7,Qh7,Be4,Pa6,h6

1.g6!! Sacrifice for three captures!
1.Rxh6? Qf5! (1…Qg8? 2.Bb2+ Kf7 3.g6+! Bxg6 4.Rh8!+- domination) 2.Bb2+ Kg8 3.Rh8+ Kf7 4.Rh2=
1.gxh6+? Kf8! 2.Rag3 Qa7+=

1…Bxg6
1…Qxg6+ 2.Rg3+-
1…Kxg6? 2.Rxh6+ Qxh6 3.Rxa6+-

2.Rxa6 Bf7!
2…Qg8 3.Rg3! Qe8 (3…Qf7 4.Bb2+ Kh7 5.Ra8+-) 4.Bb2+ Kh7 5.Ra7+ Kg8 6.Rg7+ Kf8 7.Bc3! Qe4 8.R7xg6+-

3.Bxh6+
After 3.Bb2+? Kf8 4.Ba3+ Ke8! 5.Re3+ Kd8! 6.Rd6+ Kc7 7.Rc3+ Kb7!= the black King will move to the other flank.

3…Kh8 4.Ra8+ Bg8
White’s attack is stopped: 5.Rh2? Qb1(g6)+=
5.Rg3? Qb1+!=, but …

5.Ra7!! Under the capture with check!5…Qxa7+
Black has other checks, no capture: 5…Qb1+ 6.Kh2! (threat 7.Bg7#!) 6…Be6 7.Bg7+ Kg8 8.Rh8#
or 5…Qg6+ 6.Kh2! (6.Bg5+? Bh7 7.Ra8+ Kg7=) 6…Qc2+ 7.Bd2+! (7.Kg1? Qd1+! 8.Kf2 Qc2+ 9.Bd2+ Bh7=) 7…Bh7 8.Rd7 Qf5 9.Rg3! Qh5+ 10.Kg1 Qc5+ 11.Be3+-

6.Be3+ Qh7 7.Bd4#!