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

EGTB: win in 1 half-moves

# move score
1 Bxb6 win in 3 half-moves
2 Bxa3 loss in 2 half-moves
3 Nxb6 loss in 2 half-moves
4 Rxb6 loss in 2 half-moves