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 Ka1 win in 3 half-moves
3 Ka3 win in 3 half-moves
4 Kb1 win in 3 half-moves
5 Kb2 win in 3 half-moves
6 Ra4 win in 3 half-moves
7 Rb1 win in 3 half-moves
8 Rb2 win in 3 half-moves
9 Rb3 win in 3 half-moves
10 Kab3 draw
11 Rb7 draw
12 Kb5 loss in 2 half-moves
13 Kc3 loss in 2 half-moves
14 Kc5 loss in 2 half-moves
15 Kcb3 loss in 2 half-moves
16 Kd3 loss in 2 half-moves
17 Kd4 loss in 2 half-moves
18 Kd5 loss in 2 half-moves
19 Rb5 loss in 2 half-moves
20 Rb6 loss in 2 half-moves