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 Rd6 win in 1 half-moves
3 Ka2 win in 3 half-moves
4 Ka5 win in 3 half-moves
5 Ka6 win in 3 half-moves
6 Kaa4 win in 3 half-moves
7 Kb2 win in 3 half-moves
8 Kb3 win in 3 half-moves
9 Kba4 win in 3 half-moves
10 Kc4 win in 3 half-moves
11 Kc5 win in 3 half-moves
12 Kc6 win in 3 half-moves
13 Ra6 win in 3 half-moves
14 Rc6 win in 3 half-moves
15 Re6 win in 3 half-moves
16 Rf6 win in 3 half-moves
17 Kab4 win in 5 half-moves
18 Kbb4 win in 5 half-moves
19 Rb7 win in 5 half-moves
20 Rg6 loss in 2 half-moves
21 Rh6 loss in 2 half-moves