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

Book: 56 / 191

# move proof disproof
1 Ke6 1 56
2 Ng4 60 57
3 Ke8 2 57
4 f5 1 57
5 Nf5 1 57
6 e5 1 58
7 e6 1 58
8 Kc6 2 59
9 Qe8 1 73
10 Rg8 1 73
11 g6 1 73
12 Kd6 1 75
13 g5 22 76
14 Bb7 1 77
15 Nf7 24 78
16 Ng8 20 78
17 a5 1 79
18 Ba6 1 79
19 c5 1 81
20 Nc6 1 85
21 Na6 1 85
22 c6 25 178
23 a6 21 198