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

EGTB: win in 2 half-moves

# move score
1 Ra2 win in 1 half-moves
2 Kb7 draw
3 Kb8 loss in 2 half-moves
4 Ra1 loss in 2 half-moves
5 Ra3 loss in 2 half-moves
6 Ra4 loss in 2 half-moves
7 Ra5 loss in 2 half-moves
8 Ra6 loss in 2 half-moves
9 Rb7 loss in 2 half-moves
10 Rc7 loss in 2 half-moves
11 Rg7 loss in 2 half-moves
12 Rh7 loss in 2 half-moves
13 Rd7 loss in 1 half-moves
14 Re7 loss in 1 half-moves
15 Rf7 loss in 1 half-moves