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