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

EGTB: win in 2 half-moves

# move score
1 Ra5 win in 1 half-moves
2 Ka2 draw
3 Ka4 draw
4 Kb4 draw
5 Ra4 draw
6 Ra6 draw
7 Ra7 draw
8 Re8 draw
9 Rf8 draw
10 Kb2 loss in 2 half-moves
11 Kb3 loss in 2 half-moves
12 Rb8 loss in 2 half-moves
13 Rc8 loss in 2 half-moves
14 Rd8 loss in 2 half-moves
15 Rg8 loss in 2 half-moves
16 Rh8 loss in 2 half-moves