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

Book: ∞ / 0

# move proof disproof
1 e5 0
2 c5 0
3 Na6 0
4 a5 0
5 Kd6 0
6 Ke6 0
7 Nc6 0
8 e6 0
9 Ba6 0
10 Kd8 0
11 Bh6 0
12 Qg6 0
13 a6 0
14 Kc6 0
15 Qd8 0
16 Bb7 0
17 c6 0
18 Qf7 0
19 Qh5 0
20 Bg7 0