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

Book: ∞ / 0

# move proof disproof
1 cxb1=K 0 ∞
2 cxb1=Q 0 ∞
3 cxb1=B 0 ∞
4 cxb1=N 0 ∞
5 cxb1=R 0 ∞