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

EGTB: win in 2 half-moves

# move score
1 Rb7 win in 1 half-moves
2 Kc8 draw
3 Kd8 draw
4 Ke7 draw
5 Ke8 draw
6 Ra6 draw
7 Ra8 draw
8 Rc7 draw
9 Kc7 loss in 8 half-moves
10 Kc6 loss in 2 half-moves
11 Kd6 loss in 2 half-moves
12 Ke6 loss in 2 half-moves
13 Ra1 loss in 2 half-moves
14 Ra2 loss in 2 half-moves
15 Ra3 loss in 2 half-moves
16 Ra4 loss in 2 half-moves
17 Ra5 loss in 1 half-moves