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

EGTB: loss in 31 half-moves

# move score
1 Kb5 loss in 30 half-moves
2 Kc6 loss in 30 half-moves
3 Kd5 loss in 30 half-moves
4 Kd6 loss in 28 half-moves
5 Kc4 loss in 22 half-moves
6 Kb4 loss in 16 half-moves
7 Kb6 loss in 2 half-moves
8 Kd4 loss in 2 half-moves