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 Ka2 win in 3 half-moves
4 Kbb2 win in 3 half-moves
5 Kbc2 win in 3 half-moves
6 Kc1 win in 3 half-moves
7 Kc4 win in 3 half-moves
8 Kcb2 win in 3 half-moves
9 Kcc2 win in 3 half-moves
10 Kd2 win in 3 half-moves
11 Kd3 win in 3 half-moves
12 Kd4 win in 3 half-moves
13 Ra3 win in 3 half-moves
14 Rb2 win in 3 half-moves
15 Kb4 win in 7 half-moves
16 Rb4 loss in 2 half-moves
17 Rb5 loss in 2 half-moves
18 Rb6 loss in 2 half-moves
19 Rb7 loss in 2 half-moves