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

Book: ∞ / 0

# move proof disproof
1 a6 0
2 Ba6 0
3 e6 0
4 Bb7 0
5 e5 0
6 Rh8 0
7 Kc6 0
8 Kd6 0
9 Kc7 0
10 Kd8 0
11 Ke8 0
12 Ke6 0
13 g6 0
14 Na6 0
15 Nc6 0
16 Nf6 0
17 g4 0
18 a5 0