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

EGTB: win in 4 half-moves

# move score
1 Kb6 win in 3 half-moves
2 Kb7 draw
3 Kd7 draw
4 Kd8 draw
5 Kc8 loss in 24 half-moves
6 Kb8 loss in 14 half-moves
7 Kc6 loss in 2 half-moves
8 Kd6 loss in 2 half-moves