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

EGTB: win in 2 half-moves

# move score
1 Ka2 win in 1 half-moves
2 Ka4 win in 1 half-moves
3 Kb4 draw
4 Kb3 loss in 26 half-moves
5 Kb2 loss in 16 half-moves