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

Book: ∞ / 0

# move proof disproof
1 Rb7 0
2 Ra8 0
3 Re8 0
4 Rd8 0
5 a6 0
6 g5 0
7 Rc8 0
8 d6 0
9 Rh7 0
10 d5 0
11 h5 0
12 a5 0
13 f5 0
14 g6 0
15 e5 0
16 e6 0