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

EGTB: win in 4 half-moves

# move score
1 Kf5 win in 3 half-moves
2 Kf6 loss in 24 half-moves
3 Kd6 loss in 20 half-moves
4 Ke7 loss in 12 half-moves
5 Kd7 loss in 10 half-moves
6 Kf7 loss in 10 half-moves
7 Kd5 loss in 2 half-moves
8 Ke5 loss in 2 half-moves