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

Book: 170 / 1375

# move proof disproof
1 g5 719 170
2 Ng4 198 170
3 Ng8 63 170
4 c6 55 170
5 Qe8 45 170
6 Nc6 18 170
7 c5 10 170
8 Na6 9 170
9 Nf5 8 170
10 Ke6 7 170
11 Ba6 6 170
12 Kd6 2 170
13 Ke8 2 170
14 Kc6 2 170
15 Bb7 1 170
16 f5 4 171
17 g6 23 173
18 e5 2 175
19 e6 2 175
20 a6 48 177
21 Rg8 45 184
22 a5 4 195
23 f6 102 3806