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

EGTB: win in 2 half-moves

# move score
1 Kb8 win in 1 half-moves
2 Kd8 win in 1 half-moves
3 Kc7 loss in 42 half-moves
4 Kd7 loss in 42 half-moves
5 Kb7 loss in 28 half-moves