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

EGTB: win in 6 half-moves

# move score
1 Rb8 win in 5 half-moves
2 Rh3 draw
3 Rh4 draw
4 Rh5 draw
5 Ka5 loss in 2 half-moves
6 Ka6 loss in 2 half-moves
7 Kaa7 loss in 2 half-moves
8 Kab7 loss in 2 half-moves
9 Kb5 loss in 2 half-moves
10 Kb8 loss in 2 half-moves
11 Kba7 loss in 2 half-moves
12 Kbb7 loss in 2 half-moves
13 Kc5 loss in 2 half-moves
14 Kc6 loss in 2 half-moves
15 Kc7 loss in 2 half-moves
16 Rc8 loss in 2 half-moves
17 Rd8 loss in 2 half-moves
18 Re8 loss in 2 half-moves
19 Rf8 loss in 2 half-moves
20 Rg8 loss in 2 half-moves
21 Rh1 loss in 2 half-moves
22 Rh2 loss in 2 half-moves
23 Rh6 loss in 2 half-moves
24 Rh7 loss in 2 half-moves