Nº 13 Mikhail Zinar (Ukraine)

Win
Sección A

Mikhail Zinar (Ukraine)

wKa6,Pa4,b5/bKb8,Pg7,h7

1.a5!
1.b6? g5! 2.b7 g4 3.Kb6 g3 4.a5 g2 5.a6 g1Q–+
1.Kb6? h5! 2.a5 h4 3.a6 h3 4.a7+ Ka8 5.Ka6 (5.Kc7 h2 6.b6 h1Q–+) 5…h2 6.b6 h1Q–+

With two lines:

A) 1…g5 2.Kb6 g4 3.a6 g3 4.a7+ Ka8 5.Ka6!
5.Kc7? g2 6.b6 g1Q 7.b7+ Kxa7 8.b8Q+ Ka6=

5…g2 6.b6 g1Q 7.b7#

B) 1…h5 2.b6! h4 3.b7 h3 4.Kb6 h2 5.a6 h1Q 6.a7#

Note: The author mentions a similar theme in some way, in a study of V. Kovalenko (Shakhmatnaja Kompozitsia–1996 (a6-a8)