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

EGTB: win in 4 half-moves

# move score
1 Kc6 win in 3 half-moves
2 Kd6 win in 3 half-moves
3 Kc4 loss in 10 half-moves
4 Kd4 loss in 10 half-moves
5 Kc5 loss in 8 half-moves
6 Ke4 loss in 2 half-moves
7 Ke5 loss in 2 half-moves
8 Ke6 loss in 2 half-moves