Click on the third or sixth rank to set the en passant target square.

EGTB: win in 2 half-moves

# move score
1 b4 win in 1 half-moves
2 K6c7 win in 1 half-moves
3 K6a6 loss in 1 half-moves
4 K6a7 loss in 1 half-moves
5 K6c6 loss in 1 half-moves
6 K7a6 loss in 1 half-moves
7 K7a7 loss in 1 half-moves
8 K7c6 loss in 1 half-moves
9 K7c7 loss in 1 half-moves
10 Ka5 loss in 1 half-moves
11 Ka8 loss in 1 half-moves
12 Kb8 loss in 1 half-moves
13 Kc5 loss in 1 half-moves
14 Kc8 loss in 1 half-moves