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 Rb7 win in 7 half-moves
4 Rb8 win in 7 half-moves
5 Rb1 draw
6 Rd4 draw
7 Re4 draw
8 Rf4 draw
9 Rg4 draw
10 K6b7 loss in 2 half-moves
11 K6c7 loss in 2 half-moves
12 K6d7 loss in 2 half-moves
13 K8b7 loss in 2 half-moves
14 K8c7 loss in 2 half-moves
15 K8d7 loss in 2 half-moves
16 Kb5 loss in 2 half-moves
17 Kb6 loss in 2 half-moves
18 Kb8 loss in 2 half-moves
19 Kc5 loss in 2 half-moves
20 Kd5 loss in 2 half-moves
21 Kd6 loss in 2 half-moves
22 Kd8 loss in 2 half-moves
23 Ra4 loss in 2 half-moves
24 Rb2 loss in 2 half-moves
25 Rb3 loss in 2 half-moves
26 Rc4 loss in 2 half-moves
27 Rh4 loss in 2 half-moves