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

Book: 39 / 310

# move proof disproof
1 Ng4 207 39
2 Nf5 1 39
3 g4 40 40
4 Kc6 1 41
5 Ke6 1 41
6 Ke8 1 41
7 a6 1 44
8 c6 1 44
9 g6 1 44
10 a5 1 44
11 Na6 1 44
12 Rg8 1 44
13 Qe8 1 44
14 Kd6 2 45
15 Nc6 1 46
16 c5 1 46
17 Bb7 1 48
18 e6 1 49
19 e5 1 51
20 Ba6 1 51
21 Nf7 23 55
22 Ng8 21 56