Nº26 Pavel Arestov & Alexey Gasparyan

Publicado el 30/12/2022 a 242 × 242 en 19th International Internet Tournament UAPA-2022

Win

Section B.1.

Pavel Arestov & Alexey Gasparyan (Russia-Armenia)

wKc7,d5,Nc4,d7,Be2,Pa6,c6/bKc8,Nb8,Rd8,Pa7,e3,e7

1.Nd6+!
1.Nb6+? Kc7! 2.Na8+ Kc8 =.

1…exd6
1…Kc7 2.Nb5+ Kc8 3.Nxa7+ Kc7 4.Nb5+ +-.

2.Nb6+! Kc7!
2…axb6 3.a7 +-.

3.Na8+ Kc8 4.Bg4+ Rd7!
4…Nd7 5.Kxd6 +-.

5.cxd7+ Nxd7 6.Kc6!!
6.Kxd6? Kb8 7.Kxd7 e2! 8.Bxe2 Kxa8 9.Kc7(Kc8) – stalemate;
6.Nb6+? Kc7 7.Nxd7 e2! 8.Bxe2 Kxd7 =.

6…e2!
6…Kd8 7.Kxd6! (7.Be2? Kc8 8.Nc7 Ne5+! =) 7..Nf6 8.Bf3! Nd7 9.Be2(Nc7)! +-.

7.Bxe2 Nb8+!
7…Ne5+ 8.Kxd6 Kb8 9.Nb6! +-, (but not 9.Nc7? Nf7+ =)

8.Kd5!! switchback
8.Kxd6? Nxa6! 9.Bxa6+ Kb8 10.Nc7 – stalemate.

8…Nxa6!?
8…Nd7 9.Kxd6 +-.

9.Bxa6+ Kb8 10.Kc6! switchback
10.Kxd6? Kxa8 11.Kc7 – stalemate.

10…Kxa8 11.Kc7! d5 12.Bb7# – mate A. Troitzkiy.

Correction of study 15th UAPA №17 section B2.