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

EGTB: loss in 4 half-moves

# move score
1 a2 loss in 3 half-moves
2 Kg5 loss in 1 half-moves
3 Kg6 loss in 1 half-moves
4 Kg7 loss in 1 half-moves
5 Kh5 loss in 1 half-moves
6 Kh7 loss in 1 half-moves