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

EGTB: win in 2 half-moves

# move score
1 Kb2 win in 1 half-moves
2 Kb3 win in 1 half-moves
3 Kb5 win in 1 half-moves
4 Kb6 win in 1 half-moves
5 K3a4 loss in 2 half-moves
6 K5a4 loss in 2 half-moves
7 Ka2 loss in 2 half-moves
8 Ka6 loss in 2 half-moves
9 K3b4 loss in 1 half-moves
10 K5b4 loss in 1 half-moves