Originally posted by crazyblueCertainly not 1.a4?? Kg3 ... 5.a8Q h2#.
[fen]8/2pp2pp/8/2PP1P2/1p5k/8/PP4p1/6K1 w - - 0 1[/fen]
Originally posted by BigDoggProblem8.a5 is not possible.
Certainly not 1.a4?? Kg3 ... 5.a8Q h2#.
Instead, [b]1.f6! gxf6 2.Kxg2 Kg5 3.a4 bxa3 4.bxa3 Kf5 5.a4 Ke5 6.d6! cxd6 7.c6! dxc6 8.a5 wins. The bK is nicely blocked out by his own pawns.
Another pitfall to avoid is 5.d6?? cxd6 6.a4 Ke6! and Black wins.[/b]
Originally posted by Mephisto28.a5 is possible. The pawn has been on a4 since move 5.
8.a5 is not possible.
It works without f6, using that extra tempo:
1.Kxg2 Kg5 2.a4 bxa3 3.bxa3 Kxf5 4.a4 Ke5 5.d6! cxd6 6.c6! dxc6 and now the a-pawn runs.