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 Kc6 draw
3 Kc7 draw
4 Kd6 draw
5 Ke6 draw
6 Ke7 draw
7 Ra2 draw
8 Ra3 draw
9 Ra7 draw
10 Rd8 draw
11 Rf8 draw
12 Kc8 loss in 8 half-moves
13 Kd8 loss in 6 half-moves
14 Ke8 loss in 6 half-moves
15 Ra1 loss in 4 half-moves
16 Ra4 loss in 2 half-moves
17 Ra5 loss in 2 half-moves
18 Ra6 loss in 2 half-moves
19 Rc8 loss in 2 half-moves
20 Re8 loss in 2 half-moves
21 Rg8 loss in 2 half-moves
22 Rh8 loss in 2 half-moves