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 Ra8 draw
3 Rc8 draw
4 Rd8 draw
5 Re8 draw
6 Rh1 draw
7 Rh2 draw
8 Rh3 draw
9 Rh4 draw
10 K3b3 loss in 2 half-moves
11 K3b4 loss in 2 half-moves
12 K4b3 loss in 2 half-moves
13 K4b4 loss in 2 half-moves
14 Ka2 loss in 2 half-moves
15 Ka5 loss in 2 half-moves
16 Kb2 loss in 2 half-moves
17 Kb5 loss in 2 half-moves
18 Rf8 loss in 2 half-moves
19 Rg8 loss in 2 half-moves
20 Rh5 loss in 2 half-moves
21 Rh6 loss in 2 half-moves
22 Rh7 loss in 2 half-moves