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

EGTB: win in 4 half-moves

# move score
1 Kb4 win in 3 half-moves
2 Kb5 win in 3 half-moves
3 Ka7 win in 5 half-moves
4 Kb6 win in 5 half-moves
5 Kb7 win in 5 half-moves
6 Ra7 win in 5 half-moves
7 Ka4 draw
8 Ka6 draw
9 Kc7 loss in 2 half-moves
10 Kc8 loss in 2 half-moves
11 Ra6 loss in 2 half-moves