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

Book: ∞ / 0

# move proof disproof
1 c4 0
2 Qa5 0
3 g5 0
4 Qc7 0
5 Ke6 0
6 h5 0
7 Kc6 0
8 Nh6 0
9 Rb8 0
10 Qe8 0
11 Nb8 0
12 g6 0
13 h6 0
14 Qb6 0
15 f5 0
16 Nc7 0
17 Nb4 0
18 e6 0
19 Kc7 0
20 Ke8 0
21 Kd6 0
22 e5 0
23 Bb7 0