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

Book: ∞ / 0

# move proof disproof
1 Rd8 0
2 f6 0
3 e6 0
4 e5 0
5 h5 0
6 Nb6 0
7 Nd6 0
8 Bg7 0
9 Na7 0