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

EGTB: win in 16 half-moves

# move score
1 b4 win in 15 half-moves
2 Kc6 win in 15 half-moves
3 Kb6 win in 17 half-moves
4 Kb7 win in 17 half-moves
5 Nb6 win in 17 half-moves
6 Kb8 loss in 4 half-moves
7 Kcc8 loss in 4 half-moves
8 Kcd7 loss in 4 half-moves
9 Kd6 loss in 4 half-moves
10 Kdd7 loss in 4 half-moves
11 Ke7 loss in 4 half-moves
12 Ke8 loss in 4 half-moves
13 Kdc8 loss in 3 half-moves