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

EGTB: win in 4 half-moves

# move score
1 Kbb7 win in 3 half-moves
2 Kc7 win in 3 half-moves
3 Kaa7 draw
4 Kba7 draw
5 Kc8 draw
6 Ra7 draw
7 Ka5 loss in 2 half-moves
8 Kab7 loss in 2 half-moves
9 Kb5 loss in 2 half-moves
10 Kb6 loss in 2 half-moves