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

EGTB: win in 4 half-moves

# move score
1 Kf7 win in 3 half-moves
2 Kf8 win in 3 half-moves
3 Kd6 loss in 48 half-moves
4 Ke8 loss in 40 half-moves
5 Kd7 loss in 36 half-moves
6 Kd8 loss in 34 half-moves
7 Ke6 loss in 2 half-moves
8 Kf6 loss in 2 half-moves