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