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

EGTB: loss in 5 half-moves

# move score
1 a3 loss in 4 half-moves
2 Ke6 loss in 4 half-moves
3 Ke7 loss in 4 half-moves
4 Kf5 loss in 4 half-moves
5 Kg5 loss in 4 half-moves
6 Kg6 loss in 4 half-moves
7 Kf7 loss in 3 half-moves
8 Kg7 loss in 3 half-moves
9 Ke5 loss in 2 half-moves