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 Rb4 draw
3 Rb5 draw
4 Rb6 draw
5 Rb7 draw
6 Ka5 loss in 2 half-moves
7 Ka7 loss in 2 half-moves
8 Kb5 loss in 2 half-moves
9 Kb6 loss in 2 half-moves
10 Kb7 loss in 2 half-moves
11 Ra3 loss in 2 half-moves
12 Rb1 loss in 2 half-moves
13 Rb2 loss in 2 half-moves
14 Rc3 loss in 2 half-moves
15 Rd3 loss in 1 half-moves
16 Re3 loss in 1 half-moves
17 Rf3 loss in 1 half-moves
18 Rg3 loss in 1 half-moves
19 Rh3 loss in 1 half-moves