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

EGTB: win in 2 half-moves

# move score
1 Kb4 win in 1 half-moves
2 Kb5 win in 1 half-moves
3 Kb6 win in 1 half-moves
4 Kc4 loss in 48 half-moves
5 Kd4 loss in 48 half-moves
6 Kc6 loss in 46 half-moves
7 Kd5 loss in 46 half-moves
8 Kd6 loss in 46 half-moves