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

EGTB: loss in 1 half-moves

# move score
1 Bxb4 loss in 2 half-moves
2 Nxb4 loss in 2 half-moves
3 Nxb6 loss in 2 half-moves
4 Rxb4 loss in 2 half-moves