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

EGTB: win in 4 half-moves

# move score
1 Ra7 win in 3 half-moves
2 Ra1 draw
3 Ra5 draw
4 Ra6 draw
5 Ra8 draw
6 Rb4 draw
7 Rc4 draw
8 Rd4 draw
9 Rh4 draw
10 Ka7 loss in 2 half-moves
11 Ka8 loss in 2 half-moves
12 Kb7 loss in 2 half-moves
13 Kc7 loss in 2 half-moves
14 Kc8 loss in 2 half-moves
15 Kd5 loss in 2 half-moves
16 Kd6 loss in 2 half-moves
17 Kd7 loss in 2 half-moves
18 Ke5 loss in 2 half-moves
19 Ke7 loss in 2 half-moves
20 Kf5 loss in 2 half-moves
21 Kf6 loss in 2 half-moves
22 Kf7 loss in 2 half-moves
23 Ra2 loss in 2 half-moves
24 Ra3 loss in 2 half-moves
25 Re4 loss in 2 half-moves
26 Rf4 loss in 2 half-moves
27 Rg4 loss in 2 half-moves