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

EGTB: win in 2 half-moves

# move score
1 Kb5 win in 1 half-moves
2 Kc5 win in 1 half-moves
3 Kd5 win in 1 half-moves
4 Kd4 draw
5 Kc3 loss in 50 half-moves
6 Kd3 loss in 50 half-moves
7 Kb4 loss in 42 half-moves
8 Kb3 loss in 40 half-moves