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

EGTB: win in 4 half-moves

# move score
1 Kb5 win in 3 half-moves
2 Kb6 win in 3 half-moves
3 Kb4 draw
4 Ka6 loss in 36 half-moves
5 Ka4 loss in 12 half-moves