# adjacent nodes for each node.

232
343
232

Board

...
.o.
...

Empty Connected Components

  0  0  0
  0  .  0
  0  0  0

White Connected Components

  .  .  .
  .  1  .
  .  .  .

Components and their adjacent components

Type: .  Number: 0
  Cells: (0,0) (1,0) (2,0) (2,1) (2,2) (1,2) (0,2) (0,1)
  Adjacent Components: 1
Type: o  Number: 1
  Cells: (1,1)
  Adjacent Components: 0
WC 1.  # UN = 0 :

...
.o.
...

Killable components: 1

...
...
...

1