Nº29 Sergey Osintsev

Draw

Sergey Osintsev (Russia)

wKa6,Nd6,Bf1,Rg6,h3,Pf5/bKc7,Rc5,Pa3,b2,f6,f7

1.Ne8+!
Try: 1.Nb5+? Rxb5 2.Rc3+ Kd6! 3.Rxf6+ Ke5! 4.Rxa3 b1Q 5.Bxb5 Kxf6–+
1.Rxa3? b1Q 2.Nb5+ Rxb5! 3.Bxb5 fxg6 4.fxg6 Qxg6–+

1…Kd8
1…Kc8 2.Rg8 b1Q 3.Nxf6+ Kc7 4.Ne8+! Kc6! (4…Kd7 5.Rd3+ Ke7 6.Re3+ Kd7 7.Rd3+= perpetual check) 5.Bg2+ Kd7 6.Rxa3! (6.Nf6+? Ke7! 7.Nd5+ Rxd5 8.Re3+ Re5!! 9.Rxe5+ Kf6 10.Ra5 a2 11.Bd5 a1Q 12.Rxa1 Qxa1+–+) 6…Rxf5 7.Ka7!=

2.Rd3+ Ke7 3.Re3+ Re5 4.Rxe5+
4.Rb3?! fxg6 5.Bc4 Re4 6.Rb7+ Kxe8 7.Bf7+ Kd8 8.Ba2 gxf5! 9.Ka5 f4! 10.Rb3 Re3 11.Rb4 f3 12.Rf4 Re1 13.Ka4 b1Q 14.Bxb1 Rxb1 15.Kxa3 Ke7 16.Rxf3 Ke6–+

4…fxe5 5.f6+!
5.Rb6? a2 6.f6+ Kf8! 7.Bd3 a1Q+ 8.Kb7 Kxe8–+

5…Kxe8
5…Kf8?? 6.Rh6 Kg8 7.Bc4! b1Q 8.Nd6!+-

6.Bb5+!
Try: 6.Rh6? Kd7! 7.Rh1 a2! 8.Kb6 b1Q+ 9.Bb5+ Kd6–+
6.Rg1? a2! 7.Bb5+ Kf8! 8.Rh1 a1Q+–+
6.Rg8+? Kd7 7.Bh3+ Kd6 8.Rd8+ Kc5 9.Rd1 a2–+

6…Kf8
6…Kd8?? 7.Rg1! a2 8.Kb6 (8.Kb7) 8…b1Q 9.Rg8#

7.Rh6!
7.Rg1? a2–+

7…Kg8 8.Bd3
8.Rh1? a2 9.Bd3 a1Q+–+

8…a2 9.Bh7+ Kf8 10.Bb1!! a1Q+
10…axb1Q?? 11.Rh8#

11.Kb6!
Try: 11.Kb5? Ke8 12.Rh8+ Kd7 13.Bf5+ Kc7! (13…Kd6? 14.Rd8+ Kc7 15.Rd7+ Kb8 16.Rd8+ Ka7 17.Rd7+=) 14.Rc8+ Kb7!–+
11.Kb7? Ke8 12.Rh8+ Kd7 13.Bf5+ Kd6 14.Rd8+ Kc5–+

11…Kg8 The result of the exact choice of the white King,
no 11…Ke8?? 12.Rh8+ Kd7 13.Bf5+ Kd6 14.Rd8#

12.Bh7+ Kf8 13.Bb1= positional draw.