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

Book: ∞ / 0

# move proof disproof
1 Rb7 0
2 e4 0
3 a5 0
4 Ra8 0
5 Nf6 0
6 h5 0
7 h6 0
8 Ne7 0
9 Nh6 0
10 Rc7 0
11 g6 0
12 g5 0
13 d5 0
14 d6 0
15 Bb7 0