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

Book: ∞ / 0

# move proof disproof
1 Nf6 0
2 e5 0
3 e6 0
4 Rg8 0
5 Bg7 0
6 Ke8 0
7 Kc7 0
8 Na6 0
9 Bh6 0
10 Ng5 0
11 Bb7 0
12 Kd8 0
13 Kd6 0
14 Kc6 0
15 Ba6 0
16 Ke6 0
17 Nc6 0
18 a6 0
19 a5 0