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

EGTB: win in 4 half-moves

# move score
1 Ra8 win in 3 half-moves
2 Re8 win in 3 half-moves
3 Rb8 draw
4 Rc8 draw
5 Rf8 draw
6 Rg8 draw
7 Rh8 draw
8 Ka6 loss in 2 half-moves
9 Ka7 loss in 2 half-moves
10 Ka8 loss in 2 half-moves
11 Kb6 loss in 2 half-moves
12 Kb8 loss in 2 half-moves
13 Kd6 loss in 2 half-moves
14 Ke6 loss in 2 half-moves
15 Ke7 loss in 2 half-moves
16 Ke8 loss in 2 half-moves
17 Kbc6 loss in 1 half-moves
18 Kbc7 loss in 1 half-moves
19 Kbc8 loss in 1 half-moves
20 Kdc6 loss in 1 half-moves
21 Kdc7 loss in 1 half-moves
22 Kdc8 loss in 1 half-moves