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

EGTB: win in 2 half-moves

# move score
1 Kb5 win in 1 half-moves
2 Kb7 loss in 2 half-moves
3 Kb8 loss in 2 half-moves
4 Kd7 loss in 2 half-moves
5 Kd8 loss in 2 half-moves
6 b5 loss in 1 half-moves
7 Ka4 loss in 1 half-moves
8 Ka6 loss in 1 half-moves
9 Kb4 loss in 1 half-moves
10 Kc7 loss in 1 half-moves
11 Nf1 loss in 1 half-moves
12 Nf3 loss in 1 half-moves
13 Ng4 loss in 1 half-moves