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

EGTB: win in 4 half-moves

# move score
1 Ka3 win in 3 half-moves
2 Ka2 draw
3 Kb1 draw
4 Kb3 draw
5 Kc1 draw
6 Kc2 draw
7 Kc3 draw
8 Ka1 loss in 26 half-moves