Nº24 Vladimir Neistadt & Sergey Osintsev

Publicado el 29/12/2023 a 242 × 242 en 22th INTERNATIONAL INTERNET TOURNAMENT (UAPA) – 2023

Draw

Section B.2.

Vladimir Neistadt & Sergey Osintsev (Russia)

wKb1,Na5,b7,Bc8,Rc2,Pa6,d2/bKe8,Ba1,Ra4,h8,Pb2,b4,d3,d4,g4,h4,h6

1.Rc7
Try 1.Rc5? 0–0! 2.Be6+ Kg7! 3.Rc7+ Kg6 (no 3…Kf6? 4.Bxg4 Re8 5.Rc6+ Kg5 6.Re6 Rf8 7.Bh3=) 4.Rf7 Re8–+
1.Nd6+? Ke7! 2.Rc7+ Kxd6–+

1…0–0! 2.Be6+ Kh8 3.Rc8
3.Rf7? Re8!–+

3…Rxc8 4.Bxc8 Ra3! 5.Bxg4!
Thematic try 5.Be6? Rc3! 6.Nb3 Rc6 (no 6…g3? 7.a7 Rc8 8.Bxc8 g2 9.Nxa1 bxa1Q+ 10.Kxa1 g1Q+ 11.Kb2 Qd1 12.a8Q Qc2+ 13.Ka1 Qc1+ 14.Ka2= Black gives perpetual check) 7.N7c5 (7.a7 Ra6–+) 7…Rc7 8.Bxg4 Rg7 9.a7 Position A1 with bRg7 9…Rxa7–+

5…Rc3! 6.Nb3!
6.dxc3? bxc3! (no 6…dxc3? 7.Bd1 c2+ 8.Bxc2 dxc2+ 9.Kxc2 Position B1 with b4-pawn 9…b1Q+ 10.Kxb1 Bd4 11.Nd6=) 7.Bd1 c2+ 8.Bxc2 dxc2+ 9.Kxc2 Position B with d4-pawn 9…d3+–+

6…Rxb3
6…Rc6 7.N7c5 Rg6 8.a7 Position A with bRg6 8…Rg8=

7.Bd1!
7.Bd7? Rc3!–+
7.a7? Ra3–+
7.Nc5? Ra3–+

7…Ra3
7…Rc3?? 8.dxc3+-

8.Ba4! Rxa4
8…h3 9.a7 Rxa4 10.Na5 Rxa5 11.a8Q+ Rxa8= stalemate

9.Na5! Rxa5 10.a7 Rg5!
10…Rxa7= stalemate

11.a8Q+ Rg8 12.Qh1! Rc8! 13.Qa8!
Try 13.Ka2? b3+! 14.Ka3 b1Q! 15.Qxb1 b2!–+ (no 15…Ra8+? 16.Kb4 b2 17.Kc5! Rc8+ 18.Kd6! Rc1 19.Qa2 Rg1 (or 19…b1Q 20.Qa8+ Kg7 21.Qg2+ Kh8 22.Qa8+ Kh7 23.Qe4+= perpetual check) 20.Qa8+ Kh7 21.Qb7+ Kg6 22.Qe4+= perpetual check)

13…Rg8
13…Rxa8= stalemate

14.Qh1= positional draw