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 Kc5 draw
3 Kc6 draw
4 Ke5 draw
5 Kc7 loss in 50 half-moves
6 Kd7 loss in 50 half-moves
7 Ke6 loss in 46 half-moves
8 Ke7 loss in 46 half-moves