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 Rc5 win in 5 half-moves
3 Kc5 win in 7 half-moves
4 Rb8 win in 15 half-moves
5 Kc4 draw
6 Kc6 draw
7 Kd4 draw
8 Kd6 draw
9 Ke6 draw
10 Kf7 draw
11 Kf8 draw
12 Kh7 draw
13 Kh8 draw
14 Ra5 draw
15 Rb1 draw
16 Rb6 draw
17 Ke4 loss in 2 half-moves
18 Ke5 loss in 2 half-moves
19 Kg7 loss in 2 half-moves
20 Rb2 loss in 2 half-moves
21 Rb3 loss in 2 half-moves
22 Rb4 loss in 2 half-moves