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

EGTB: win in 4 half-moves

# move score
1 a2 win in 3 half-moves
2 Kf2 win in 5 half-moves
3 Kf3 win in 5 half-moves
4 Kf4 win in 5 half-moves
5 Kg2 win in 5 half-moves
6 Kg4 win in 5 half-moves
7 Kh2 win in 5 half-moves
8 Kh3 win in 5 half-moves
9 Kh4 win in 5 half-moves