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

EGTB: win in 4 half-moves

# move score
1 Kd7 win in 3 half-moves
2 Kd6 draw
3 Ke7 draw
4 Kf6 draw
5 Kf7 draw
6 Kd5 loss in 2 half-moves
7 Ke5 loss in 2 half-moves
8 Kf5 loss in 2 half-moves