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

Book: 36 / 507

# move proof disproof
1 Ke6 1 36
2 Bb7 1 47
3 g6 1 49
4 Ng8 21 50
5 f5 1 50
6 a5 1 50
7 c5 1 50
8 Na6 1 50
9 Nc6 1 50
10 Nf7 25 51
11 e5 1 52
12 e6 1 52
13 Qe8 1 55
14 Ng4 177 69
15 Ba6 53 100
16 g5 43 107
17 Rg8 60 113
18 c6 45 122
19 a6 21 203
20 Kc6 9 391
21 Ke8 21 448
22 Nf5 21 595
23 Kd6 0