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 Kb2 win in 7 half-moves
3 Rc1 draw
4 Ka2 loss in 2 half-moves
5 Ka4 loss in 2 half-moves
6 Kb3 loss in 2 half-moves
7 Kb4 loss in 2 half-moves
8 Kd2 loss in 2 half-moves
9 Kd3 loss in 2 half-moves
10 Kd4 loss in 2 half-moves
11 Ke2 loss in 2 half-moves
12 Ke4 loss in 2 half-moves
13 Kf2 loss in 2 half-moves
14 Kf3 loss in 2 half-moves
15 Kf4 loss in 2 half-moves
16 Ra1 loss in 2 half-moves
17 Rb2 loss in 2 half-moves
18 Rb3 loss in 2 half-moves
19 Rb4 loss in 2 half-moves
20 Rb5 loss in 2 half-moves
21 Rb6 loss in 2 half-moves
22 Rb7 loss in 2 half-moves
23 Rd1 loss in 2 half-moves
24 Re1 loss in 2 half-moves
25 Rf1 loss in 2 half-moves
26 Rg1 loss in 2 half-moves
27 Rh1 loss in 2 half-moves