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

EGTB: win in 4 half-moves

# move score
1 Ka6 win in 3 half-moves
2 Kb6 win in 3 half-moves
3 Ra5 win in 3 half-moves
4 Rb5 win in 3 half-moves
5 Rg8 win in 3 half-moves
6 Rg6 win in 5 half-moves
7 K7b7 draw
8 K7b8 draw
9 K8b7 draw
10 K8b8 draw
11 Rc5 draw
12 Rg3 draw
13 Rg4 draw
14 Rg7 draw
15 Rh5 draw
16 Rd5 loss in 2 half-moves
17 Re5 loss in 2 half-moves
18 Rf5 loss in 2 half-moves
19 Rg1 loss in 2 half-moves
20 Rg2 loss in 2 half-moves