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 Ra8 win in 3 half-moves
3 Kf7 draw
4 Kf8 draw
5 Kg7 draw
6 Kh7 draw
7 Kh8 draw
8 Ra5 draw
9 Ra6 draw
10 Rb4 draw
11 Rc4 draw
12 Ra1 loss in 2 half-moves
13 Ra2 loss in 2 half-moves
14 Ra3 loss in 2 half-moves
15 Rd4 loss in 2 half-moves
16 Re4 loss in 2 half-moves
17 Rf4 loss in 2 half-moves
18 Rg4 loss in 2 half-moves
19 Rh4 loss in 2 half-moves