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

Book: 43 / 154

# move proof disproof
1 Nc6 1 43
2 Ng8 19 44
3 f5 1 61
4 c6 20 63
5 Qe8 3 66
6 Nf5 3 66
7 Bb7 3 66
8 Ke6 2 66
9 Ke8 2 66
10 Kc6 2 66
11 g6 1 66
12 Ng4 24 67
13 Nf7 23 67
14 a5 1 68
15 Kd6 1 69
16 Ba6 5 70
17 e5 1 80
18 e6 1 80
19 Rg8 1 81
20 g5 1 82
21 Na6 1 82
22 a6 17 84
23 c5 21 89