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

EGTB: win in 4 half-moves

# move score
1 g7 win in 3 half-moves
2 Kf5 draw
3 Kf6 draw
4 Kh5 draw
5 Kh6 draw
6 Kf4 loss in 2 half-moves
7 Kg4 loss in 2 half-moves
8 Kh4 loss in 2 half-moves