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

EGTB: win in 4 half-moves

# move score
1 Ka7 win in 3 half-moves
2 Kb7 win in 3 half-moves
3 Kba5 win in 3 half-moves
4 Kc5 win in 3 half-moves
5 Kc7 win in 3 half-moves
6 Ra5 win in 3 half-moves
7 Ra7 win in 3 half-moves
8 Kc6 win in 13 half-moves
9 Ka3 win in 17 half-moves
10 Kaa5 draw
11 Kbb5 draw
12 Ra8 draw
13 Kab5 loss in 2 half-moves
14 Kb3 loss in 2 half-moves
15 Kb4 loss in 2 half-moves