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

EGTB: win in 4 half-moves

# move score
1 Ra2 win in 3 half-moves
2 Ra3 draw
3 Ra7 draw
4 Ra8 draw
5 Rb4 draw
6 Rc4 draw
7 Rd4 draw
8 Rh4 draw
9 Ka2 loss in 2 half-moves
10 Kab1 loss in 2 half-moves
11 Kab2 loss in 2 half-moves
12 Kc2 loss in 2 half-moves
13 Kcb1 loss in 2 half-moves
14 Kcb2 loss in 2 half-moves
15 Kd1 loss in 2 half-moves
16 Kd2 loss in 2 half-moves
17 Ra5 loss in 2 half-moves
18 Ra6 loss in 2 half-moves
19 Re4 loss in 2 half-moves
20 Rf4 loss in 2 half-moves
21 Rg4 loss in 2 half-moves