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

EGTB: win in 2 half-moves

# move score
1 Rb8 win in 1 half-moves
2 Kd7 draw
3 Kf7 draw
4 Kf8 draw
5 Ra6 draw
6 Rc8 draw
7 Re8 draw
8 Rf8 draw
9 Kf6 loss in 10 half-moves
10 Kd8 loss in 8 half-moves
11 Kd6 loss in 6 half-moves
12 Ke6 loss in 6 half-moves
13 Ke8 loss in 6 half-moves
14 Ra7 loss in 6 half-moves
15 Ra5 loss in 4 half-moves
16 Ra1 loss in 2 half-moves
17 Ra2 loss in 2 half-moves
18 Ra3 loss in 2 half-moves
19 Rd8 loss in 2 half-moves
20 Rg8 loss in 2 half-moves
21 Rh8 loss in 2 half-moves
22 Ra4 loss in 1 half-moves