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

EGTB: win in 2 half-moves

# move score
1 Ra6 win in 1 half-moves
2 Ka3 draw
3 Ka5 draw
4 Ra5 draw
5 Ra7 draw
6 Rb8 draw
7 Rc8 draw
8 Rd8 draw
9 Re8 draw
10 Kb3 loss in 2 half-moves
11 Kb4 loss in 2 half-moves
12 Kb5 loss in 2 half-moves
13 Rf8 loss in 2 half-moves
14 Rg8 loss in 2 half-moves
15 Rh8 loss in 2 half-moves