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 Kf7 win in 5 half-moves
5 Kf8 win in 5 half-moves
6 Kg7 win in 5 half-moves
7 Rb6 win in 5 half-moves
8 Kb5 draw
9 Kb7 draw
10 Kc5 draw
11 Kd5 draw
12 Kd6 draw
13 Kd7 draw
14 Kh7 draw
15 Kh8 draw
16 Ra1 draw
17 Rb5 draw
18 Rc1 draw
19 Rd1 draw
20 Re1 draw
21 Rf1 draw
22 Kb6 loss in 2 half-moves
23 Rb2 loss in 2 half-moves
24 Rb3 loss in 2 half-moves
25 Rb4 loss in 2 half-moves
26 Rg1 loss in 2 half-moves
27 Rh1 loss in 2 half-moves