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

EGTB: win in 4 half-moves

# move score
1 Kd4 win in 3 half-moves
2 Kf5 win in 5 half-moves
3 Kf6 win in 5 half-moves
4 Ke4 win in 7 half-moves
5 Kf4 win in 7 half-moves
6 Kd5 loss in 2 half-moves
7 Kd6 loss in 2 half-moves
8 Ke6 loss in 2 half-moves