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

EGTB: loss in 57 half-moves

# move score
1 Kb5 loss in 56 half-moves
2 Kc5 loss in 56 half-moves
3 Kd5 loss in 56 half-moves
4 Kb6 loss in 46 half-moves
5 Kd6 loss in 46 half-moves
6 Kc7 loss in 42 half-moves
7 Kd7 loss in 42 half-moves
8 Kb7 loss in 40 half-moves