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

EGTB: win in 4 half-moves

# move score
1 Rb8 win in 3 half-moves
2 Rd8 win in 3 half-moves
3 Kg7 win in 5 half-moves
4 Rc8 win in 5 half-moves
5 Kb5 draw
6 Kc5 draw
7 Kd5 draw
8 Ra8 draw
9 Re8 draw
10 Kb6 loss in 2 half-moves
11 Kb7 loss in 2 half-moves
12 Kc7 loss in 2 half-moves
13 Kd6 loss in 2 half-moves
14 Kd7 loss in 2 half-moves
15 Kf6 loss in 2 half-moves
16 Kf7 loss in 2 half-moves
17 Kh6 loss in 2 half-moves
18 Kh7 loss in 2 half-moves
19 Rf8 loss in 2 half-moves
20 Rg7 loss in 2 half-moves
21 Rh8 loss in 2 half-moves
22 Kf5 loss in 1 half-moves
23 Kg5 loss in 1 half-moves
24 Kh5 loss in 1 half-moves