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

EGTB: win in 2 half-moves

# move score
1 Kb1 win in 1 half-moves
2 Kc1 win in 1 half-moves
3 Kd1 win in 1 half-moves
4 Kb2 loss in 46 half-moves
5 Kb3 loss in 44 half-moves
6 Kc3 loss in 44 half-moves
7 Kd2 loss in 2 half-moves
8 Kd3 loss in 2 half-moves