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

EGTB: win in 2 half-moves

# move score
1 Kb4 win in 1 half-moves
2 Kc5 win in 1 half-moves
3 Kc7 win in 1 half-moves
4 Kab5 win in 3 half-moves
5 Kb7 win in 3 half-moves
6 Ra7 win in 3 half-moves
7 Ra8 win in 3 half-moves
8 Ka7 win in 5 half-moves
9 Kc6 draw
10 Kbb5 loss in 2 half-moves
11 Ka4 loss in 1 half-moves