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

EGTB: win in 4 half-moves

# move score
1 Kb5 win in 3 half-moves
2 Kb7 win in 7 half-moves
3 Kc7 win in 7 half-moves
4 Ra7 win in 7 half-moves
5 Ka7 win in 9 half-moves
6 Ka3 draw
7 Ka5 draw
8 Kb3 draw
9 Kb4 draw
10 Kc8 draw
11 Ra5 draw
12 Ra6 draw