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

EGTB: win in 6 half-moves

# move score
1 Kb5 win in 5 half-moves
2 Kc5 loss in 58 half-moves
3 Kd5 loss in 58 half-moves
4 Kc3 loss in 52 half-moves
5 Kd3 loss in 52 half-moves
6 Kd4 loss in 52 half-moves
7 Kb3 loss in 50 half-moves
8 Kb4 loss in 50 half-moves