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

EGTB: win in 4 half-moves

# move score
1 Ra5 win in 3 half-moves
2 Kc5 win in 5 half-moves
3 Ra6 win in 5 half-moves
4 Kc4 win in 7 half-moves
5 Kaa5 draw
6 Kba5 draw
7 Kbb5 draw
8 Ra7 draw
9 Rb8 draw
10 Rh8 draw
11 Kaa3 loss in 2 half-moves
12 Kab3 loss in 2 half-moves
13 Kab5 loss in 2 half-moves
14 Kba3 loss in 2 half-moves
15 Kbb3 loss in 2 half-moves
16 Kc3 loss in 2 half-moves
17 Rc8 loss in 2 half-moves
18 Rd8 loss in 2 half-moves
19 Re8 loss in 2 half-moves
20 Rf8 loss in 2 half-moves
21 Rg8 loss in 2 half-moves