Nº7 Oleg Pervakov

Draw

Oleg Pervakov (Russia)

wKe8,Qa6,Ne4,Bc4,Rg4,Pc5/bKh1,Qc7,Rc8,Pb2,d7,f7

1.Ke7!
After 1.Kxf7? only 1…d5+! (not 1…d6+? 2.Kg6+-) 2.Ke6 dxe4 3.Bd5 Re8+–+

1…d6+!
1…d5+ 2.Kf6 dxe4 (2…Qd8+ 3.Kf5 b1Q 4.Qh6+!+-) 3.Bd5! Qd8+ 4.Ke5=
1…Qd8+ 2.Kxf7 Qf8+ 3.Kg6 b1Q (3…Rc6+ 4.Qxc6 dxc6 5.Ba2=) 4.Rh4+ Kg1 5.Rg4+=

2.Kf6 Qd8+! 3.Kf5 b1Q
3…Rxc5+ 4.Nxc5 b1Q+ 5.Bd3=

4.Bd5!
4.Kf4? Rxc5! 5.Be2 Kh2!–+

4…Rxc5
4…Qh8 5.Qxd6 Qd3 6.Rg3! Qh5+ 7.Kf4 Qh4+ 8.Kf5 Qh7+ 9.Kf4!=
4…Qe7? 5.cxd6+-

5.Rh4+!
Thematic try 5.Qa2? Rxd5+! (5…Qxa2? 6.Nf2+ Kh2 7.Rg2#! Model mate) 6.Qxd5 Qf1+ 7.Nf2+ Kh2 8.Rh4+!? Qxh4 And no model mirror stalemate with pin after 9.Qg2+ Qxg2!–+ (9…Kxg2?=)

5…Kg1 6.Rg4+ Kh1 7.Rh4+ Qxh4 8.Qf1+!! Qxf1+
8…Kh2 9.Qg2+ (or 9.Qe2+= ) 9…Kxg2=

9.Nf2+ Kh2 Model mirror stalemate with two pins