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

EGTB: win in 2 half-moves

# move score
1 Rb8 win in 1 half-moves
2 Kc6 win in 3 half-moves
3 Kcc4 win in 3 half-moves
4 Kdc4 win in 3 half-moves
5 Ke4 win in 3 half-moves
6 Rb1 win in 3 half-moves
7 Rb2 win in 3 half-moves
8 Rb3 win in 3 half-moves
9 Rb5 win in 3 half-moves
10 Kb5 win in 7 half-moves
11 Kb6 win in 7 half-moves
12 Kcd5 win in 7 half-moves
13 Kd6 win in 7 half-moves
14 Ra4 win in 7 half-moves
15 Rc4 win in 7 half-moves
16 Kc3 loss in 2 half-moves
17 Kd3 loss in 2 half-moves
18 Kdd5 loss in 2 half-moves
19 Ke3 loss in 2 half-moves
20 Ke5 loss in 2 half-moves
21 Rb6 loss in 2 half-moves
22 Rb7 loss in 2 half-moves