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

EGTB: loss in 1 half-moves

# move score
1 Rxb4 loss in 4 half-moves
2 gxf4 loss in 2 half-moves
3 Nxb4 loss in 2 half-moves
4 Rxf4 loss in 2 half-moves