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

EGTB: win in 4 half-moves

# move score
1 Rb5 win in 3 half-moves
2 Rc1 win in 3 half-moves
3 Rd1 win in 5 half-moves
4 Kc5 draw
5 Kc6 draw
6 Kc7 draw
7 Kd5 draw
8 Kd7 draw
9 Ra1 draw
10 Rb2 draw
11 Rb3 draw
12 Rb4 draw
13 Rb6 draw
14 Re1 draw
15 Rf1 draw
16 Ke5 loss in 2 half-moves
17 Ke6 loss in 2 half-moves
18 Ke7 loss in 2 half-moves
19 Rb7 loss in 2 half-moves
20 Rb8 loss in 2 half-moves
21 Rg1 loss in 2 half-moves
22 Rh1 loss in 2 half-moves