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

EGTB: win in 4 half-moves

# move score
1 Rb7 win in 3 half-moves
2 Rb8 win in 3 half-moves
3 Kc7 win in 5 half-moves
4 Kb5 draw
5 Kb7 draw
6 Kc5 draw
7 Kd5 draw
8 Kd6 draw
9 Kd7 draw
10 Kg7 draw
11 Kg8 draw
12 Kh7 draw
13 Ra3 draw
14 Rb4 draw
15 Rb5 draw
16 Rb6 draw
17 Rc3 draw
18 Rg3 draw
19 Rh3 draw
20 Kb6 loss in 2 half-moves
21 Rb1 loss in 2 half-moves
22 Rb2 loss in 2 half-moves
23 Rd3 loss in 2 half-moves
24 Re3 loss in 2 half-moves
25 Rf3 loss in 2 half-moves