Click on the third or sixth rank to set the en passant target square.

EGTB: win in 4 half-moves

# move score
1 Rb2 win in 3 half-moves
2 Rb4 win in 3 half-moves
3 Rb5 win in 3 half-moves
4 Rb3 win in 7 half-moves
5 Rb6 win in 7 half-moves
6 Ra8 draw
7 Rb1 draw
8 Rf8 draw
9 Rg8 draw
10 Rh8 draw
11 Kb5 loss in 2 half-moves
12 Kb6 loss in 2 half-moves
13 Kb7 loss in 2 half-moves
14 Kc5 loss in 2 half-moves
15 Kc7 loss in 2 half-moves
16 Kd2 loss in 2 half-moves
17 Kd3 loss in 2 half-moves
18 Kd4 loss in 2 half-moves
19 Kd5 loss in 2 half-moves
20 Kd6 loss in 2 half-moves
21 Kd7 loss in 2 half-moves
22 Ke2 loss in 2 half-moves
23 Ke4 loss in 2 half-moves
24 Kf2 loss in 2 half-moves
25 Kf3 loss in 2 half-moves
26 Kf4 loss in 2 half-moves
27 Rb7 loss in 2 half-moves
28 Rc8 loss in 2 half-moves
29 Rd8 loss in 2 half-moves
30 Re8 loss in 2 half-moves