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

EGTB: win in 4 half-moves

# move score
1 Rh8 win in 3 half-moves
2 Rh1 draw
3 Rh4 draw
4 g8=B loss in 2 half-moves
5 g8=K loss in 2 half-moves
6 g8=N loss in 2 half-moves
7 g8=Q loss in 2 half-moves
8 g8=R loss in 2 half-moves
9 Rh2 loss in 2 half-moves
10 Rh3 loss in 2 half-moves
11 Rh5 loss in 2 half-moves
12 Rh6 loss in 2 half-moves