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

EGTB: win in 4 half-moves

# move score
1 Rg8 win in 3 half-moves
2 Ra3 win in 5 half-moves
3 Rb3 win in 5 half-moves
4 Rg6 win in 5 half-moves
5 K7b7 draw
6 K7b8 draw
7 K8b7 draw
8 K8b8 draw
9 Ka6 draw
10 Kb6 draw
11 Rc3 draw
12 Rg4 draw
13 Rg5 draw
14 Rg7 draw
15 Rh3 draw
16 Rd3 loss in 2 half-moves
17 Re3 loss in 2 half-moves
18 Rf3 loss in 2 half-moves
19 Rg1 loss in 2 half-moves
20 Rg2 loss in 2 half-moves