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

EGTB: win in 4 half-moves

# move score
1 Ke5 win in 3 half-moves
2 Ke6 win in 3 half-moves
3 Ke7 win in 3 half-moves
4 Kd5 loss in 46 half-moves
5 Kc5 loss in 44 half-moves
6 Kd7 loss in 36 half-moves
7 Kc6 loss in 34 half-moves
8 Kc7 loss in 34 half-moves