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

EGTB: win in 4 half-moves

# move score
1 Kd6 win in 3 half-moves
2 Kc6 loss in 16 half-moves
3 Kc7 loss in 16 half-moves
4 Kd8 loss in 12 half-moves
5 Kc8 loss in 8 half-moves
6 Ke8 loss in 8 half-moves
7 Ke6 loss in 2 half-moves
8 Ke7 loss in 2 half-moves