R

N

A

I

W

H

N

R

C

E

W

A

C

W

T

A

C

E

H

R

I

N

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: Challenging

Here is a print-friendly version of this puzzle.

Please send responses to

Thanks,
Steve