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 Kc6 win in 3 half-moves
4 Kc8 win in 3 half-moves
5 Ra8 win in 3 half-moves
6 Kab6 win in 7 half-moves
7 Kc7 win in 13 half-moves
8 Ka5 win in 15 half-moves
9 Ka8 draw
10 Kb5 loss in 2 half-moves