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

EGTB: loss in 3 half-moves

# move score
1 Kc7 loss in 2 half-moves
2 Kc8 loss in 2 half-moves
3 Ke7 loss in 2 half-moves
4 Ke8 loss in 2 half-moves
5 b5 loss in 1 half-moves
6 Kd7 loss in 1 half-moves