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

Book: 63 / 248

# move proof disproof
1 Nc6 1 63
2 d5 1 63
3 e6 1 63
4 e5 1 63
5 g4 123 64
6 a5 20 64
7 h5 6 64
8 Bh6 2 64
9 f5 1 64
10 c5 19 65
11 d6 1 74
12 Bb7 1 76
13 f6 17 77
14 Nh6 17 78
15 Bg7 1 78
16 c6 19 80
17 h6 16 80
18 Nf6 1 84