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

EGTB: win in 2 half-moves

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