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

EGTB: win in 4 half-moves

# move score
1 K4b5 win in 3 half-moves
2 K4a5 draw
3 K6a5 draw
4 K6b5 draw
5 Ka3 draw
6 Ka7 draw
7 Kb3 draw
8 Kb4 draw
9 Kb7 draw
10 Kb6 loss in 2 half-moves