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

EGTB: win in 4 half-moves

# move score
1 Rb5 win in 3 half-moves
2 Rb6 win in 7 half-moves
3 Rb8 win in 7 half-moves
4 Rb4 win in 11 half-moves
5 K6b7 draw
6 K8b7 draw
7 Rb7 draw
8 Rd1 draw
9 Re1 draw
10 Rf1 draw
11 Rh1 draw
12 Kb5 loss in 2 half-moves
13 Kb6 loss in 2 half-moves
14 Kb8 loss in 2 half-moves
15 Kc5 loss in 2 half-moves
16 Kd5 loss in 2 half-moves
17 Kd6 loss in 2 half-moves
18 Kd8 loss in 2 half-moves
19 Ra1 loss in 2 half-moves
20 Rb2 loss in 2 half-moves
21 Rb3 loss in 2 half-moves
22 Rc1 loss in 2 half-moves
23 Rg1 loss in 2 half-moves
24 K6c7 loss in 1 half-moves
25 K6d7 loss in 1 half-moves
26 K8c7 loss in 1 half-moves
27 K8d7 loss in 1 half-moves