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

Book: 43 / 129

# move proof disproof
1 Ng4 49 43
2 e5 8 43
3 Kc6 1 43
4 Ke6 1 43
5 Ke8 1 43
6 c5 50 44
7 Nf5 1 44
8 g5 1 47
9 g6 1 49
10 Rg8 1 49
11 Qe8 1 49
12 f5 1 50
13 a6 1 50
14 c6 1 50
15 a5 2 51
16 Nf7 2 51
17 Ba6 1 51
18 Ng8 1 51
19 Kd6 1 52
20 Bb7 1 54
21 e6 1 54
22 Na6 1 54
23 Nc6 1 54