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

EGTB: win in 4 half-moves

# move score
1 Ke6 win in 3 half-moves
2 Ke7 loss in 30 half-moves
3 Ke8 loss in 22 half-moves
4 Kf8 loss in 20 half-moves
5 Kg7 loss in 20 half-moves
6 Kg8 loss in 18 half-moves
7 Kf6 loss in 2 half-moves
8 Kg6 loss in 2 half-moves