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

EGTB: win in 4 half-moves

# move score
1 Rb5 win in 3 half-moves
2 Kba3 win in 5 half-moves
3 Kba5 win in 5 half-moves
4 Kc5 win in 5 half-moves
5 Kaa3 win in 7 half-moves
6 Kaa5 win in 7 half-moves
7 Kab3 win in 7 half-moves
8 Kab5 win in 7 half-moves
9 Kbb5 win in 9 half-moves
10 Ra7 win in 9 half-moves
11 Kbb3 draw
12 Rb6 draw
13 Rb8 draw
14 Rc7 draw
15 Rg7 draw
16 Rh7 draw
17 Kc3 loss in 2 half-moves
18 Kc4 loss in 2 half-moves
19 Rd7 loss in 2 half-moves
20 Re7 loss in 2 half-moves
21 Rf7 loss in 2 half-moves