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 Ka7 win in 1 half-moves
3 Kb7 win in 1 half-moves
4 Kbc7 win in 1 half-moves
5 Ka5 loss in 1 half-moves
6 Ka6 loss in 1 half-moves
7 Kc5 loss in 1 half-moves
8 Kc6 loss in 1 half-moves
9 Kc8 loss in 1 half-moves
10 Kd7 loss in 1 half-moves
11 Kdc7 loss in 1 half-moves
12 Ke7 loss in 1 half-moves
13 Ke8 loss in 1 half-moves