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

EGTB: win in 2 half-moves

# move score
1 Rb4 win in 1 half-moves
2 Ra2 draw
3 Ra6 draw
4 Rc4 draw
5 Ra1 loss in 8 half-moves
6 Kc3 loss in 2 half-moves
7 Kc4 loss in 2 half-moves
8 Kc5 loss in 2 half-moves
9 Kd3 loss in 2 half-moves
10 Kd5 loss in 2 half-moves
11 Ke3 loss in 2 half-moves
12 Ke4 loss in 2 half-moves
13 Ke5 loss in 2 half-moves
14 Ra3 loss in 2 half-moves
15 Ra5 loss in 2 half-moves
16 Ra7 loss in 2 half-moves
17 Ra8 loss in 2 half-moves