8
7
6
5
4
3
2
a
1
b
c
d
e
f
g
h
Click on the third or sixth rank to set the en passant target square.

Book: 31 / 466

# move proof disproof
1 b5 327 31
2 g4 81 32
3 a6 20 32
4 Na6 17 32
5 h5 1 32
6 d6 1 33
7 d5 1 33
8 b6 2 57
9 c6 2 57
10 f6 2 57
11 h6 2 57
12 Nh6 1 57
13 Bh6 1 59
14 f5 1 60
15 Nf6 1 60
16 Bg7 1 60
17 a5 1 60
18 e6 1 61
19 c5 1 61
20 e5 1 61
21 Nc6 1 61