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

EGTB: draw

# move score
1 K4b4 draw
2 K4b5 draw
3 K5b5 draw
4 K5b4 loss in 2 half-moves
5 Ka6 loss in 2 half-moves
6 Kb6 loss in 2 half-moves
7 Ka3 loss in 1 half-moves
8 Kb3 loss in 1 half-moves