## Saturday July 16 puzzle in the Washington Post

All about puzzles in newspapers, magazines, and books

### Saturday July 16 puzzle in the Washington Post

Can anyone offer a solution to this puzzle using logic? After I filled in every square that could only be one #, I was left with many squares that could be at least 2 numbers. The only way I could complete the puzzle was to take a guess on one of the 2-choice squares and continue until I hit a road block, which I didn't. I don't like guessing and would rather use logic. The puzzle begins with 5-8-9-8-3.
Diane

Posts: 2
Joined: 21 July 2005

can you post the original puzzle, and perhaps how far you got?
Last edited by simes on Sun Dec 11, 2011 9:27 am, edited 2 times in total.
simes

Posts: 324
Joined: 11 March 2005
Location: UK

Here is the puzzle. Difficulty level hard. It is impossible to remember how far I got before guessing, because the whole thing is filled in now.

--5|---|8-9
8--|---|3-2
---|3-6|---

--1|92-|--7
-9-|---|-5-
4--|-63|9--

---|4-1|---
6-8|---|--1
1-3|---|5--
Diane

Posts: 2
Joined: 21 July 2005

Sorry, but I can only think that you made an error or missed something. The puzzle doesn't require guessing, and doesn't need any technique beyond "sole candidate" and "unique candidate".
simes

Posts: 324
Joined: 11 March 2005
Location: UK