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

EGTB: win in 2 half-moves

# move score
1 Ra7 win in 1 half-moves
2 Ka1 draw
3 Kb1 draw
4 Kb3 draw
5 Kc3 draw
6 Ra1 draw
7 Ra3 draw
8 Ka3 loss in 6 half-moves
9 Kc1 loss in 4 half-moves
10 Kc2 loss in 4 half-moves
11 Ra4 loss in 2 half-moves
12 Ra5 loss in 2 half-moves
13 Ra6 loss in 2 half-moves
14 Ra8 loss in 2 half-moves