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 Kb6 loss in 2 half-moves
3 Kb7 loss in 2 half-moves
4 Kc5 loss in 2 half-moves
5 Kc7 loss in 2 half-moves
6 Kd5 loss in 2 half-moves
7 Kd6 loss in 2 half-moves
8 Kd7 loss in 2 half-moves
9 Na7 loss in 2 half-moves
10 Nb6 loss in 2 half-moves
11 Nd6 loss in 2 half-moves
12 Ne7 loss in 2 half-moves