Nº28 Michael Gromov & Oleg Pervakov

Win

Michael Gromov & Oleg Pervakov (Russia)

wKh5,Nh8,Pe6,f5/bKf6,Pa5,c7,d6,g5,h7

1.Nf7
Main A 1…g4 2.Kxg4 a4 3.Nh6!
Try 3.Ng5? a3 4.Ne4+ Ke7 5.Nc3 c6! 6.Kg5 d5 7.Na2 d4 8.Nb4 (8.Kf4 Kd6!=) 8…d3=

3…a3 4.Ng8+ Kg7 5.e7 Kf7 6.f6 a2 7.Nh6+ Ke8 8.Nf5! a1Q 9.Ng7+ Kf7 10.e8Q+ Kxf6 11.Nh5# Model mate. Change tries and solutions (Ng5, Nh6) in A and B.

Main B 1…a4 2.Nxg5!
Try 2.Nh6? a3 3.Ng8+ Kxf5 4.e7 a2 5.e8Q a1Q 6.Nh6+ Kf4=)

2…a3 3.Ne4+ Kxf5
3…Ke7 4.Nc3 c6 5.Kh6+-

4.e7 a2 5.Ng3+! Kf4
5…Kf6 6.e8Q a1Q 7.Qh8++

6.Ne2+! Kf5
6…Kf3 7.Nd4+ Kg2 8.Nc2 (b3)+-

7.Nd4+ Kf6 8.e8Q+-