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 Rb4 draw
3 Rb6 draw
4 Rb7 draw
5 Rb8 draw
6 Re3 draw
7 Rf3 draw
8 Rg3 draw
9 Rh3 draw
10 K6c7 loss in 2 half-moves
11 K6d7 loss in 2 half-moves
12 K6e7 loss in 2 half-moves
13 K8c7 loss in 2 half-moves
14 K8d7 loss in 2 half-moves
15 K8e7 loss in 2 half-moves
16 Kc5 loss in 2 half-moves
17 Kc6 loss in 2 half-moves
18 Kc8 loss in 2 half-moves
19 Kd5 loss in 2 half-moves
20 Ke5 loss in 2 half-moves
21 Ke6 loss in 2 half-moves
22 Ke8 loss in 2 half-moves
23 Ra3 loss in 2 half-moves
24 Rb1 loss in 2 half-moves
25 Rb2 loss in 2 half-moves
26 Rc3 loss in 2 half-moves
27 Rd3 loss in 2 half-moves