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

EGTB: win in 4 half-moves

# move score
1 Rb8 win in 3 half-moves
2 K8b7 win in 7 half-moves
3 Kb6 win in 9 half-moves
4 K7b7 draw
5 K7b8 draw
6 K8b8 draw
7 Ka6 draw
8 Rc8 draw
9 Rg8 draw
10 Rh1 draw
11 Rh5 draw
12 Rh6 draw
13 Rh7 draw
14 Rd8 loss in 2 half-moves
15 Re8 loss in 2 half-moves
16 Rf8 loss in 2 half-moves
17 Rh2 loss in 2 half-moves
18 Rh3 loss in 2 half-moves
19 Rh4 loss in 2 half-moves