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

EGTB: win in 2 half-moves

# move score
1 Kb3 win in 1 half-moves
2 Ka4 loss in 24 half-moves
3 Kb4 loss in 24 half-moves
4 Kb2 loss in 20 half-moves
5 Ka2 loss in 16 half-moves