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 Ka8 draw
3 Kb8 draw
4 Kc7 draw
5 Kc8 draw
6 Ra1 draw
7 Ra6 draw
8 Ra8 draw
9 Ka6 loss in 2 half-moves
10 Kb6 loss in 2 half-moves
11 Kc6 loss in 2 half-moves
12 Ra2 loss in 2 half-moves
13 Ra3 loss in 2 half-moves
14 Ra4 loss in 2 half-moves