[FEN ""]
1. d4 d6 2. d5 c5 3. dxc6 b5 ( 3. c4 e5 4. dxe6)

[FEN "4k3/6p1/8/8/6p1/8/7P/4K3 w - - 0 1"]

1. h4 gxh3 2. Ke2 h2 3. Ke1

[FEN "4k3/6p1/8/8/8/8/8/4K2P w - - 0 1"]

1. h2 Ke7 2. h3 Ke8 3. h4 Ke7 4. h5 g5 5. hxg6