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 Ra4 draw
3 Ra5 draw
4 Ra6 draw
5 Ra7 draw
6 Re1 draw
7 Rf1 draw
8 Rg1 draw
9 Rh1 draw
10 Kb6 loss in 2 half-moves
11 Kb7 loss in 2 half-moves
12 Kb8 loss in 2 half-moves
13 Kc6 loss in 2 half-moves
14 Kc8 loss in 2 half-moves
15 Kcd6 loss in 2 half-moves
16 Kcd7 loss in 2 half-moves
17 Kd5 loss in 2 half-moves
18 Kd8 loss in 2 half-moves
19 Ke5 loss in 2 half-moves
20 Ke7 loss in 2 half-moves
21 Ked6 loss in 2 half-moves
22 Ked7 loss in 2 half-moves
23 Kf5 loss in 2 half-moves
24 Kf6 loss in 2 half-moves
25 Kf7 loss in 2 half-moves
26 Ra2 loss in 2 half-moves
27 Ra3 loss in 2 half-moves
28 Rb1 loss in 2 half-moves
29 Rc1 loss in 2 half-moves
30 Rd1 loss in 2 half-moves