This puzzle is Copyright © 2007 by James Dow Allen

Nurikabe #4


 
 
  2 4          
5        12     
   1      5    
     2         
  1            
         9  3  
 1   6     5   
               
   4           
    1 2       2
 6 1      8    
  4  2      4  
           5   
      1     1 2
2    1    3    

 
 
Rules:
  1. Paint some unnumbered cells black to form one continuous black chain.
  2. Remaining cells form white chains, each containing one numbered cell, and exactly as many cells in total as that number.
  3. Diagonal connections do not link chains.
  4. No 2x2 square may be entirely black.

 
 

Here is the puzzle in a format you may find more convenient:
 
  

   .  .  2  .  4  .  .  .  .  .  .  .  .  .  . 
   5  .  .  .  .  .  .  .  . 12  .  .  .  .  . 
   .  .  .  1  .  .  .  .  .  .  5  .  .  .  . 
   .  .  .  .  .  2  .  .  .  .  .  .  .  .  . 
   .  .  1  .  .  .  .  .  .  .  .  .  .  .  . 
   .  .  .  .  .  .  .  .  .  9  .  .  3  .  . 
   .  1  .  .  .  6  .  .  .  .  .  5  .  .  . 
   .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 
   .  .  .  4  .  .  .  .  .  .  .  .  .  .  . 
   .  .  .  .  1  .  2  .  .  .  .  .  .  .  2 
   .  6  .  1  .  .  .  .  .  .  8  .  .  .  . 
   .  .  4  .  .  2  .  .  .  .  .  .  4  .  . 
   .  .  .  .  .  .  .  .  .  .  .  5  .  .  . 
   .  .  .  .  .  .  1  .  .  .  .  .  1  .  2 
   2  .  .  .  .  1  .  .  .  .  3  .  .  .  .

 
 

This puzzle is Copyright © 2007 by James Dow Allen