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

EGTB: win in 4 half-moves

# move score
1 Rb4 win in 3 half-moves
2 Rb6 win in 3 half-moves
3 Rb7 win in 3 half-moves
4 Rb8 win in 11 half-moves
5 Kb4 draw
6 Kb5 draw
7 Kb6 draw
8 Kc6 draw
9 Kd5 draw
10 Kd6 draw
11 Kd7 draw
12 Kd8 draw
13 Ke7 draw
14 Kf7 draw
15 Kf8 draw
16 Ra3 draw
17 Rb5 draw
18 Rh3 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 Rf3 loss in 2 half-moves
27 Rg3 loss in 2 half-moves