dailysudoku.com

Marty R. · Posted: Fri Dec 17, 2010 10:11 pm Post subject: Probable stupid question

Have you ever seen an invalid puzzle published by a legitimate site?

daj95376 · Joined: 23 Aug 2008 Posts: 3854

I've seen numerous Windoku puzzles posted with Sudoku in the title. The only way I could tell the difference was the shading on the four additional "boxes" used in a Windoku puzzle. Many of these puzzles have been posted in the Help section of the Players' Forums. The airline magazines are notorious for making this mistake.

Marty R. · Posted: Sat Dec 18, 2010 1:01 am Post subject:

Thanks Danny. I was wondering about the sites that are commonly mentioned around here, like Brain Bashers, Menneske, Vanhegan and the like.

peterj · Joined: 26 Mar 2010 Posts: 974 Location: London, UK

Marty, I have never found an invalid one on these mainstream sites - and I usually use SimpleSudoku which checks...

Here is a famous one that was carved into a hill near the M4 (a major "freeway") in the UK...

... sadly it had 1,905 solutions, bit of a waste of an ancient chalk hillside Exclamation

Marty R. · Posted: Sun Dec 19, 2010 12:11 am Post subject:

That's certainly the first hillside one I've heard of. Laughing

keith · Posted: Wed Dec 22, 2010 9:01 pm Post subject:

Marty,

If you search on 'pseudo sudoku' you will find invalid puzzles: Those with many, or no, solutions.

Keith

PS: Currently spending a week in London, courtesy of BAA and BA. On the last flight to land at Heathrow before it was closed on Saturday.

keith · Posted: Sun Apr 03, 2011 9:00 pm Post subject:

Pat · Joined: 23 Feb 2010 Posts: 207

Sudokus of Shame