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 Rd4 draw
7 Re4 draw
8 Rf4 draw
9 Rg4 draw
10 Kc7 loss in 2 half-moves
11 Kc8 loss in 2 half-moves
12 Kdd7 loss in 2 half-moves
13 Kde7 loss in 2 half-moves
14 Ked7 loss in 2 half-moves
15 Kee7 loss in 2 half-moves
16 Kf7 loss in 2 half-moves
17 Kf8 loss in 2 half-moves
18 Ra2 loss in 2 half-moves
19 Ra3 loss in 2 half-moves
20 Rb4 loss in 2 half-moves
21 Rc4 loss in 2 half-moves
22 Rh4 loss in 2 half-moves