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

EGTB: loss in 4 half-moves

# move score
1 f7 loss in 3 half-moves
2 Na1 loss in 2 half-moves
3 Na5 loss in 2 half-moves
4 Nc1 loss in 2 half-moves
5 Nc5 loss in 2 half-moves
6 Nd2 loss in 2 half-moves
7 Nd4 loss in 2 half-moves