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

EGTB: win in 2 half-moves

# move score
1 a3 win in 1 half-moves
2 Kd6 win in 1 half-moves
3 Ke8 loss in 4 half-moves
4 Kf7 loss in 4 half-moves
5 Kf8 loss in 4 half-moves
6 Kd7 loss in 2 half-moves
7 Kd8 loss in 2 half-moves
8 Ke6 loss in 2 half-moves
9 Kf6 loss in 2 half-moves