Nº 7 Oleg Pervakov

Win

Section A

Oleg Pervakov (Russia)

wKe7,Ne8,Rc4,Pb5,f4,f5/bKh8,Qg4,Pa4,a6,b6,c3,e4,g5

1.Nf6!
1.f6? Qxf4 2.f7 Qe5+ 3.Kd7 Qf5+=

1…Qxf5
1…Qxf4 2.Rc8+ Kg7 3.Rg8+ Kh6 4.Rg6#

2.Kf7 axb5 3.Rc7!
3.Rxc3? gxf4 zz 4.Rc7 (4.Rc1 Qh3! 5.Rg1 Qb3+ 6.Kf8 Qb4+ 7.Kf7 Qb3+=) 4…Qh3! 5.Re7 Qb3+ 6.Ke8 Qh3 7.Kf7 Qb3+ Positional draw 1
3.Rd4? Qc8 4.fxg5 c2 5.g6 Qc7+ 6.Rd7 Qc4+ 7.Rd5 Qc7+ 8.Nd7 Qf4+ 9.Nf6 Qc7+ Positional draw 2
3.Rc6? g4!=

3…gxf4
3…g4 4.Re7 Qc8 5.Kg6!+-

4.Rxc3 zz
4.Ra7? Qxf6+ 5.Kxf6 Kg8=

4…b4
Main: 4…a3 5.Rxa3 Qc8 6.Kg6! e3 7.Ra2! e2 8.Rxe2+-
Main: 4…f3 5.Rc1! Qh3 6.Rd1+- (6.Rg1? Qg2–+)

5.Rc1! Qxf6+
Main: 5…Qh3 6.Rg1! Qb3+ 7.Kf8+-

6.Kxf6 Kg8 7.Rc8+
7.Kf5? b3 8.Kxe4 b2=

7…Kh7 8.Rc7+! Kh6
8…Kg8 9.Rg7+ Kf8 10.Ra7!+-

9.Rc4! f3
Main: 9…a3 10.Rxb4! a2 11.Ra4 e3 12.Rxa2 Kh5 13.Kf5+-
Main: 9…e3 10.Rxf4! Kh5 11.Rxb4 a3 12.Kf5! a2 13.Rb2!+-
Main:9…b3 10.Rxa4! f3 11.Ra1+-;or 9…Kh5 10.Kf5+-

10.Rxe4! Kh5 11.Rxb4 a3
11…f2 12.Rf4+-

12.Kf5 a2 13.Rb2! Kh4 14.Kf4 f2 15.Rxf2 a1Q 16.Rh2#