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

EGTB: win in 4 half-moves

# move score
1 Kb8 win in 3 half-moves
2 Kbb6 win in 3 half-moves
3 Kc8 win in 3 half-moves
4 Kab6 win in 5 half-moves
5 Kc6 win in 5 half-moves
6 Ka5 win in 9 half-moves
7 Kc7 win in 9 half-moves
8 Ka8 draw
9 Ra8 draw
10 Kb5 loss in 2 half-moves