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

EGTB: win in 2 half-moves

# move score
1 Rd8 win in 1 half-moves
2 Kg7 draw
3 Kg8 draw
4 Ra1 draw
5 Ra3 draw
6 Ra4 draw
7 Ra5 draw
8 Rb8 draw
9 Rc8 draw
10 Re8 draw
11 Ke7 loss in 2 half-moves
12 Ke8 loss in 2 half-moves
13 Kf7 loss in 2 half-moves
14 Ra2 loss in 2 half-moves
15 Ra6 loss in 2 half-moves
16 Ra7 loss in 2 half-moves