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 3 half-moves
3 Rb7 win in 3 half-moves
4 Kf5 draw
5 Kf6 draw
6 Kf7 draw
7 Kgg5 draw
8 Kgg7 draw
9 Kgh5 draw
10 Kgh7 draw
11 Khg5 draw
12 Khg7 draw
13 Khh5 draw
14 Khh7 draw
15 Ra3 draw
16 Rb4 draw
17 Rb8 draw
18 Rc3 draw
19 Rg3 draw
20 Rh3 draw
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