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

Book: 49 / 231

# move proof disproof
1 Ng4 34 49
2 Nf7 26 49
3 Qe8 26 49
4 Ng8 23 49
5 a6 21 49
6 Nf5 13 49
7 e6 4 49
8 e5 3 49
9 a5 2 49
10 Rg8 2 49
11 Kd6 2 49
12 Kc6 2 49
13 g6 1 49
14 g5 1 49
15 Nc6 1 49
16 Ke8 4 51
17 Ba6 4 52
18 Ke6 6 54
19 Bb7 4 59
20 f5 20 63
21 Na6 3 64
22 c5 2 66
23 c6 27 532