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 5 half-moves
3 Rb8 win in 7 half-moves
4 Ka5 draw
5 Ka7 draw
6 Kb5 draw
7 Kb6 draw
8 Kb7 draw
9 Kc5 draw
10 Kc6 draw
11 Kd6 draw
12 Ke4 draw
13 Ke5 draw
14 Ke6 draw
15 Ra3 draw
16 Rb4 draw
17 Rb5 draw
18 Rf3 draw
19 Kc4 loss in 2 half-moves
20 Kd4 loss in 2 half-moves
21 Rb1 loss in 2 half-moves
22 Rb2 loss in 2 half-moves
23 Rc3 loss in 2 half-moves
24 Rd3 loss in 2 half-moves
25 Re3 loss in 2 half-moves
26 Rg3 loss in 2 half-moves
27 Rh3 loss in 2 half-moves