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

EGTB: win in 4 half-moves

# move score
1 Kb2 win in 3 half-moves
2 Kb4 loss in 20 half-moves
3 Kb3 loss in 18 half-moves
4 Ka4 loss in 12 half-moves
5 Ka2 loss in 10 half-moves