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

EGTB: loss in 3 half-moves

# move score
1 Kc6 loss in 2 half-moves
2 Kc8 loss in 2 half-moves
3 Ke6 loss in 2 half-moves
4 Ke7 loss in 2 half-moves
5 Ke8 loss in 2 half-moves
6 a3 loss in 1 half-moves
7 Kc7 loss in 1 half-moves
8 Kd6 loss in 1 half-moves
9 Kd8 loss in 1 half-moves