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

EGTB: win in 2 half-moves

# move score
1 Rb1 win in 1 half-moves
2 Kb7 win in 3 half-moves
3 Kb8 win in 3 half-moves
4 Kc8 win in 3 half-moves
5 Kd6 win in 3 half-moves
6 Rb2 win in 3 half-moves
7 Rb3 win in 3 half-moves
8 Rb7 win in 3 half-moves
9 Rb8 win in 3 half-moves
10 Kb6 win in 5 half-moves
11 Kc6 win in 5 half-moves
12 Kd7 win in 5 half-moves
13 Kd8 win in 5 half-moves
14 Ra4 win in 5 half-moves
15 Kb3 loss in 2 half-moves
16 Kb5 loss in 2 half-moves
17 Kc3 loss in 2 half-moves
18 Kc5 loss in 2 half-moves
19 Kd3 loss in 2 half-moves
20 Kd4 loss in 2 half-moves
21 Kd5 loss in 2 half-moves
22 Rb5 loss in 2 half-moves
23 Rb6 loss in 2 half-moves