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 Rb8 win in 3 half-moves
3 Rc8 win in 3 half-moves
4 Rd8 draw
5 Re8 draw
6 Rf8 draw
7 Rg2 draw
8 Rg3 draw
9 Rg4 draw
10 Rg7 draw
11 Ka1 loss in 2 half-moves
12 Ka4 loss in 2 half-moves
13 Kaa3 loss in 2 half-moves
14 Kab2 loss in 2 half-moves
15 Kb1 loss in 2 half-moves
16 Kb4 loss in 2 half-moves
17 Kba3 loss in 2 half-moves
18 Kbb2 loss in 2 half-moves
19 Kc2 loss in 2 half-moves
20 Kc3 loss in 2 half-moves
21 Kc4 loss in 2 half-moves
22 Rg1 loss in 2 half-moves
23 Rg5 loss in 2 half-moves
24 Rg6 loss in 2 half-moves
25 Rh8 loss in 2 half-moves