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

Book: ∞ / 0

# move proof disproof
1 a5 0
2 Nf6 0
3 Qe8 0
4 e5 0
5 Na6 0
6 Nc6 0
7 Ke6 0
8 a6 0
9 Bh6 0
10 Ba6 0
11 c6 0
12 Ke8 0
13 Kd6 0
14 Kc6 0
15 e6 0
16 c5 0
17 Bg7 0
18 Bb7 0
19 Nh6 0