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

Book: 158 / 46

# move proof disproof
1 d5 1 158
2 Nb4 17 159
3 Rb8 3 159
4 b5 1 160
5 e6 1 160
6 Nb8 1 160
7 c5 1 160
8 f6 1 161
9 e5 1 161
10 Bg7 3 162
11 b6 2 162
12 Nh6 1 162
13 f5 1 163
14 h6 1 163
15 d6 1 163
16 g4 1 165
17 Nc5 4 167
18 Nf6 1 167
19 c6 2 170
20 Bh6 1 171
21 h5 1 173