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

EGTB: win in 4 half-moves

# move score
1 Kab8 win in 3 half-moves
2 Kb6 win in 3 half-moves
3 Rb8 win in 3 half-moves
4 Kd8 win in 9 half-moves
5 Ka6 win in 19 half-moves
6 Kab7 draw
7 Kcb8 draw
8 Kc7 loss in 2 half-moves
9 Kcb7 loss in 2 half-moves
10 Kd7 loss in 2 half-moves