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

EGTB: win in 2 half-moves

# move score
1 Ra8 win in 1 half-moves
2 Kb6 draw
3 Re6 draw
4 Rf6 draw
5 Ka4 loss in 2 half-moves
6 Kb4 loss in 2 half-moves
7 Kb5 loss in 2 half-moves
8 Ra7 loss in 2 half-moves
9 Rb6 loss in 2 half-moves
10 Rc6 loss in 2 half-moves
11 Rd6 loss in 2 half-moves
12 Rh6 loss in 2 half-moves
13 Rg6 loss in 1 half-moves