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 loss in 2 half-moves
3 Ka8 loss in 2 half-moves
4 Kb7 loss in 2 half-moves
5 Kbc7 loss in 2 half-moves
6 Kbc8 loss in 2 half-moves
7 Kd7 loss in 2 half-moves
8 Kdc7 loss in 2 half-moves
9 Kdc8 loss in 2 half-moves
10 Ke7 loss in 2 half-moves
11 Ke8 loss in 2 half-moves