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: 9 / 597

# move proof disproof
1 b5 527 9
2 g4 49 15
3 a6 3 25
4 Na6 1 25
5 h5 1 26
6 Bg7 1 29
7 Bh6 1 29
8 Nh6 1 29
9 Nf6 1 29
10 Nc6 1 29
11 f5 1 29
12 e5 1 29
13 d5 1 29
14 c5 1 29
15 a5 1 29
16 h6 1 29
17 f6 1 29
18 e6 1 29
19 d6 1 29
20 c6 1 29
21 b6 1 29