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