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

Book: 66 / 151

# move proof disproof
1 Ng4 45 66
2 Bb7 4 66
3 Ke6 3 66
4 Ke8 3 66
5 g6 3 66
6 a5 3 66
7 Rg8 3 66
8 Qe8 3 66
9 c5 2 66
10 e5 2 66
11 Kd6 3 67
12 Ng8 3 67
13 Nf7 3 67
14 Kc6 2 67
15 Nc6 1 67
16 f5 3 68
17 Nf5 6 69
18 g5 3 69
19 Na6 1 76
20 Ba6 1 83
21 e6 2 84
22 c6 27 272
23 a6 25 598