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

EGTB: win in 2 half-moves

# move score
1 Rb5 win in 1 half-moves
2 Kc4 draw
3 Kc5 draw
4 Kd4 draw
5 Kd6 draw
6 Ke5 draw
7 Ke6 draw
8 Ra4 draw
9 Ra6 draw
10 Ra8 draw
11 Kc6 loss in 2 half-moves
12 Ke4 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 Rc5 loss in 2 half-moves
17 Ra7 loss in 1 half-moves