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

EGTB: win in 4 half-moves

# move score
1 Rg8 win in 3 half-moves
2 Kb6 win in 5 half-moves
3 Kb7 win in 5 half-moves
4 Kc7 win in 5 half-moves
5 Kd7 win in 5 half-moves
6 Ra8 win in 5 half-moves
7 Rb8 win in 5 half-moves
8 Rc7 win in 5 half-moves
9 Rd8 win in 5 half-moves
10 Kb5 loss in 4 half-moves
11 Kc5 loss in 4 half-moves
12 Kd5 loss in 2 half-moves
13 Kd6 loss in 2 half-moves
14 Re8 loss in 2 half-moves
15 Rf8 loss in 2 half-moves
16 Rh8 loss in 2 half-moves