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 Kc4 win in 1 half-moves
3 Kd4 win in 1 half-moves
4 Kb5 loss in 38 half-moves
5 Kb6 loss in 32 half-moves
6 Kc6 loss in 2 half-moves
7 Kd5 loss in 2 half-moves
8 Kd6 loss in 2 half-moves