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

EGTB: win in 12 half-moves

# move score
1 K2b3 win in 11 half-moves
2 Kb5 win in 11 half-moves
3 K2a3 win in 13 half-moves
4 K4a3 win in 13 half-moves
5 K4b3 win in 13 half-moves
6 Ka5 win in 13 half-moves
7 Kb1 win in 13 half-moves
8 Kb2 win in 13 half-moves
9 Kb4 win in 13 half-moves
10 Ka1 win in 15 half-moves