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

EGTB: win in 4 half-moves

# move score
1 Kc5 win in 3 half-moves
2 Kc6 draw
3 Kd6 draw
4 Ke4 draw
5 Ke6 draw
6 Ke5 loss in 52 half-moves
7 Kc4 loss in 2 half-moves
8 Kd4 loss in 2 half-moves