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 Rb8 win in 7 half-moves
3 Rb6 win in 9 half-moves
4 K6b7 draw
5 K6c7 draw
6 K6d7 draw
7 K8b7 draw
8 K8c7 draw
9 K8d7 draw
10 Kb5 draw
11 Kc5 draw
12 Kd5 draw
13 Kd6 draw
14 Kd8 draw
15 Ra3 draw
16 Rb4 draw
17 Rb7 draw
18 Rf3 draw
19 Rg3 draw
20 Rh3 draw
21 Kb6 loss in 2 half-moves
22 Kb8 loss in 2 half-moves
23 Rb1 loss in 2 half-moves
24 Rb2 loss in 2 half-moves
25 Rc3 loss in 2 half-moves
26 Rd3 loss in 2 half-moves
27 Re3 loss in 2 half-moves