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

Book: ∞ / 0

# move proof disproof
1 a6 0
2 a5 0
3 c6 0
4 e6 0
5 Qf8 0
6 e5 0
7 Qg8 0
8 Qf7 0
9 Qg6 0
10 Bb7 0
11 Qh8 0
12 Ke6 0
13 Nc6 0
14 c5 0
15 Qh5 0
16 Ba6 0
17 Qd8 0
18 Na6 0
19 Kc6 0
20 Kd6 0
21 Kd8 0