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

EGTB: win in 4 half-moves

# move score
1 Kh6 win in 3 half-moves
2 Kg5 loss in 60 half-moves
3 Kg4 loss in 52 half-moves
4 Kh4 loss in 52 half-moves
5 Kg6 loss in 2 half-moves