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

EGTB: win in 4 half-moves

# move score
1 Rd8 win in 3 half-moves
2 Kb7 draw
3 Kc7 draw
4 Kd7 draw
5 Kh5 draw
6 Re8 draw
7 Rf8 draw
8 Rh7 draw
9 Kb8 loss in 2 half-moves
10 Kd8 loss in 2 half-moves
11 Kg5 loss in 2 half-moves
12 Kg6 loss in 2 half-moves
13 Rg8 loss in 2 half-moves
14 Kg7 loss in 1 half-moves
15 Kh7 loss in 1 half-moves