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

EGTB: win in 4 half-moves

# move score
1 Kd5 win in 3 half-moves
2 Ke5 win in 3 half-moves
3 Kc5 draw
4 Ke6 loss in 38 half-moves
5 Kc7 loss in 32 half-moves
6 Ke7 loss in 32 half-moves
7 Kc6 loss in 30 half-moves
8 Kd7 loss in 30 half-moves