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

EGTB: win in 2 half-moves

# move score
1 Kb3 win in 1 half-moves
2 Kc3 win in 1 half-moves
3 Kd3 win in 1 half-moves
4 Kb2 loss in 34 half-moves
5 Kd2 loss in 34 half-moves
6 Kb1 loss in 30 half-moves
7 Kc1 loss in 30 half-moves
8 Kd1 loss in 18 half-moves