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

EGTB: win in 2 half-moves

# move score
1 Kb4 win in 1 half-moves
2 Kb5 loss in 48 half-moves
3 Ka4 loss in 42 half-moves
4 Ka6 loss in 30 half-moves
5 Kb6 loss in 30 half-moves