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

Book: 58 / 253

# move proof disproof
1 Nc6 1 58
2 Ng4 115 59
3 Kd6 1 59
4 e5 1 59
5 e6 1 59
6 g5 3 60
7 Rg8 3 60
8 Kc6 1 60
9 Ke8 1 60
10 f5 1 60
11 Ke6 1 60
12 Ba6 1 60
13 Nf5 1 62
14 a5 1 81
15 c5 1 82
16 Ng8 21 83
17 Qe8 1 83
18 g6 1 83
19 Nf7 25 84
20 Bb7 1 86
21 Na6 24 316
22 c6 26 416
23 a6 21 543