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BENKO'S BRAIN TWISTERS
Problem Nine
 
 

Our ninth problem was very complex and would likely stump the strongest of grandmasters. So don't feel bad if you couldn't come close to solving it!

09 benko problem
WHITE TO MOVE AND WIN

ENDGAME: White to move and win.

Sakkelet 1990. Special prize.

1.Nf3 gxh5! 1...bxc6 2.Nxh2 Kxh2 3.hxg6 Bd4 4.b4 g1=Q 5.Rxg1 Kxg1 6.Kd6 or 1...Qh3+ 2.Ke7 Qxf3 3.Bxf3 gxh5 4.Bxh5 Kh2 5.Rxg1 Kxg1 6.Bf3. 2.Kd5!! Other moves don't do the trick: 2.Bxb7? Qh3+ 3.Kf6 Qxf3+! 4.Bxf3 h4 5.Kg5 h3 6.Kg4 h2 7.Bd1 Bf2! (7...Bc5? 8.Kh3 g1=N+ 9.Kg3) 8.Kf4 (8.Kh3 g1=N+ =) 8...Bg3+! 9.Kg4 Bf2 10.Kf5 Bb6 11.Ke4 Kg1 =; 2.Be4? Qh3+ 3.Kf6 Qxf3+ 4.Bxf3 Kh2! 5.Bxg2 Kxg2 6.Kg5 Be3+ 7.Kxh5 Kf3 8.Kg6 Ke4 9.Rd1 Bd4 10.b3 Kd5 11.Rc1 b5 12.Kf7 Kd6! 13.Ke8 Bf6 =. 2...bxc6+ 3.Ke4!! c5 3...h4 4.b4!. 4.Kd5!! c4 5.Kc6 h4 6.Kb7 h3 7.Ka8! c3 8.bxc3 Qb8+ 9.Rxb8 h2 10.Rh8, 1-0.