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

Book: ∞ / 0

# move proof disproof
1 Nc4 0
2 d5 0
3 Kf7 0
4 Ra6 0
5 Ra8 0
6 h6 0
7 g6 0
8 Rb7 0
9 Kd8 0
10 f5 0
11 e5 0
12 Ba6 0
13 g5 0
14 Nb7 0
15 Nc6 0
16 Rc7 0
17 Nh6 0
18 e6 0
19 Nb3 0
20 d6 0
21 Bb7 0