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

Book: ∞ / 0

# move proof disproof
1 f3 0
2 Ke6 0
3 a5 0
4 Rh7 0
5 c6 0
6 c5 0
7 Qe8 0
8 a6 0
9 Nd5 0
10 Nec6 0
11 Ng6 0
12 Bg7 0
13 Ng8 0
14 Ba6 0
15 Bb7 0
16 Nbc6 0
17 Na6 0
18 h5 0
19 Nf5 0
20 Ke8 0
21 Kc6 0
22 Rg8 0
23 Kd6 0