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

EGTB: win in 2 half-moves

# move score
1 Ke7 win in 1 half-moves
2 Kd7 loss in 50 half-moves
3 Kc7 loss in 40 half-moves
4 Kc8 loss in 36 half-moves
5 Ke8 loss in 2 half-moves