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 Kb2 win in 1 half-moves
3 Kb3 win in 1 half-moves
4 Kc1 loss in 30 half-moves
5 Kd1 loss in 30 half-moves
6 Kd2 loss in 30 half-moves
7 Kc3 loss in 2 half-moves
8 Kd3 loss in 2 half-moves