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

EGTB: win in 1 half-moves

# move score
1 Rxb6 win in 1 half-moves
2 Nxb6 loss in 2 half-moves
3 Bxc7 loss in 1 half-moves
4 Nxc7 loss in 1 half-moves