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 Kd6 draw
4 Ke6 draw
5 Ke7 draw
6 Ke8 draw
7 Ra7 draw
8 Rc8 draw
9 Rd8 draw
10 Re8 draw
11 Kc7 loss in 26 half-moves
12 Kd8 loss in 14 half-moves
13 Kc8 loss in 8 half-moves
14 Ra1 loss in 2 half-moves
15 Ra2 loss in 2 half-moves
16 Ra3 loss in 2 half-moves
17 Ra5 loss in 2 half-moves
18 Ra6 loss in 2 half-moves
19 Rf8 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