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

Book: ∞ / 0

# move proof disproof
1 a4 0
2 c6 0
3 Ra8 0
4 e5 0
5 Bb7 0
6 Qg8 0
7 e6 0
8 Na6 0
9 Ba6 0
10 Qf8 0
11 Qe8 0
12 Kc6 0
13 Ke6 0
14 Rb7 0
15 Kd6 0
16 Ke8 0
17 Qh8 0
18 Nc6 0
19 Ra6 0
20 c5 0