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 Kb6 loss in 8 half-moves
3 Kb7 loss in 8 half-moves
4 Kb8 loss in 8 half-moves
5 Ka6 loss in 4 half-moves
6 Ka8 loss in 4 half-moves
7 Rb3 loss in 4 half-moves
8 Rc3 loss in 4 half-moves
9 Ra1 loss in 2 half-moves
10 Ra2 loss in 2 half-moves
11 Ra4 loss in 2 half-moves
12 Ra6 loss in 2 half-moves
13 Rd3 loss in 2 half-moves
14 Re3 loss in 2 half-moves
15 Rf3 loss in 2 half-moves
16 Rg3 loss in 1 half-moves
17 Rh3 loss in 1 half-moves