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

EGTB: win in 4 half-moves

# move score
1 Rb6 win in 3 half-moves
2 Rb7 win in 3 half-moves
3 Rb8 win in 3 half-moves
4 Ka7 draw
5 Kb4 draw
6 Kb5 draw
7 Kb6 draw
8 Kb7 draw
9 Kb8 draw
10 Kc6 draw
11 Kd5 draw
12 Kd6 draw
13 Ra3 draw
14 Rb4 draw
15 Rb5 draw
16 Rf3 draw
17 Kc4 loss in 2 half-moves
18 Kd4 loss in 2 half-moves
19 Rb1 loss in 2 half-moves
20 Rb2 loss in 2 half-moves
21 Rc3 loss in 2 half-moves
22 Rd3 loss in 2 half-moves
23 Re3 loss in 2 half-moves
24 Rg3 loss in 2 half-moves
25 Rh3 loss in 2 half-moves