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 K8a7 win in 7 half-moves
3 K8b7 win in 9 half-moves
4 Kb6 win in 9 half-moves
5 Kb5 win in 11 half-moves
6 K6a7 draw
7 K6b7 draw
8 Ka5 draw
9 Kb8 draw
10 Rc8 draw
11 Rg8 draw
12 Rh1 draw
13 Rh6 draw
14 Rh7 draw
15 Rd8 loss in 2 half-moves
16 Re8 loss in 2 half-moves
17 Rf8 loss in 2 half-moves
18 Rh2 loss in 2 half-moves
19 Rh3 loss in 2 half-moves
20 Rh4 loss in 2 half-moves
21 Rh5 loss in 2 half-moves