H  R I        T
     R  E        N  
   C        A    W N
            H  R    
 C        W    T    
 R   A      C       
               W   I

Code-Doku Joke

How do you prevent a summer cold?

Place each of the letters of A RICH NEWT exactly once in each row, column and 3×3 box. When you have completed the puzzle, the shaded squares will form the punch line of the joke read left to right, then top to bottom.

Difficulty: Easy

Here is a print-friendly version of this puzzle.

Other difficulties:
All of these can be solved using the sudoku placement rules alone, and they all have the same hidden message. Choose a puzzle difficulty that fits your interest, or solve the easy puzzle then try a harder one after you know the message.


Please send responses to my email address is mathrec at this domain