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 Rf8 win in 3 half-moves
3 Re8 win in 9 half-moves
4 Ka7 draw
5 Kd4 draw
6 Kd5 draw
7 Kd6 draw
8 Ke4 draw
9 Ke6 draw
10 Kf4 draw
11 Kf5 draw
12 Kf6 draw
13 Ra7 draw
14 Rc8 draw
15 Rg8 draw
16 Rh8 draw
17 Ka5 loss in 2 half-moves
18 Kb5 loss in 2 half-moves
19 Kb6 loss in 2 half-moves
20 Kb7 loss in 2 half-moves
21 Rb8 loss in 2 half-moves