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

Book: ∞ / 0

# move proof disproof
1 a5 0
2 d5 0
3 g5 0
4 d6 0
5 e5 0
6 f5 0
7 e6 0
8 a6 0
9 Ng4 0
10 Kd8 0
11 Rh8 0
12 g6 0
13 f6 0
14 Ng8 0
15 Nf5 0
16 b6 0
17 Nc6 0
18 Na6 0