13
12
11
10
9
8
7
6
5
4
3
2
1
A
A
B
B
C
C
D
D
E
E
F
F
G
G
H
H
J
J
K
K
L
L
M
M
N
N
13
12
11
10
9
8
7
6
5
4
3
2
1
Removing stones
⌫
⇧
link
□