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

EGTB: draw

# move score
1 Kb6 draw
2 Kb7 draw
3 Kc5 draw
4 Kc7 draw
5 Kb5 loss in 36 half-moves
6 Kd5 loss in 32 half-moves
7 Kd7 loss in 26 half-moves
8 Kd6 loss in 24 half-moves