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

EGTB: loss in 5 half-moves

# move score
1 Ke8 loss in 4 half-moves
2 a3 loss in 2 half-moves
3 Ke6 loss in 2 half-moves
4 Ke7 loss in 2 half-moves
5 Kf8 loss in 2 half-moves
6 Kg6 loss in 2 half-moves
7 Kg8 loss in 2 half-moves
8 Kf6 loss in 1 half-moves
9 Kg7 loss in 1 half-moves