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

EGTB: win in 2 half-moves

# move score
1 Ra6 win in 1 half-moves
2 Rc8 win in 1 half-moves
3 Kb4 win in 3 half-moves
4 Kb5 win in 3 half-moves
5 Kb6 win in 3 half-moves
6 Kcc4 win in 3 half-moves
7 Kcd4 win in 3 half-moves
8 Kcd6 win in 3 half-moves
9 Kdc4 win in 3 half-moves
10 Kdd4 win in 3 half-moves
11 Kdd6 win in 3 half-moves
12 Ke4 win in 3 half-moves
13 Ke5 win in 3 half-moves
14 Ke6 win in 3 half-moves
15 Rb6 win in 3 half-moves
16 Rd6 win in 3 half-moves
17 Rh6 win in 3 half-moves
18 Rc7 win in 5 half-moves
19 Re6 loss in 2 half-moves
20 Rf6 loss in 2 half-moves
21 Rg6 loss in 2 half-moves