dailysudoku.com Forum Index dailysudoku.com
Discussion of Daily Sudoku puzzles
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

Errors in columns

 
Post new topic   Reply to topic    dailysudoku.com Forum Index -> General discussion
View previous topic :: View next topic  
Author Message
David Bryant



Joined: 29 Jul 2005
Posts: 559
Location: Denver, Colorado

PostPosted: Fri Sep 30, 2005 2:10 pm    Post subject: Errors in columns Reply with quote

There have been several posts in this forum about multiple solutions to a well-formed Sudoku puzzle. Sometimes the poster managed to omit one or two numbers from the original puzzle. In other cases the second "solution" was erroneous.

I haven't gone back to verify this, but I think all the erroneous solutions had duplicate numerals in columns, but no duplicates in rows.

Anyway, this got me to thinking. I find it more difficult to review the columns in a completed Sudoku than to review the rows. In other words, I have a harder time focusing on details when I move my eyes up and down, and an easier time when my eyes move left and right. I suppose this is because of the way we write English. Someone who reads a language that's written in columns (like Japanese) might have an easier time inspecting the columns, and a harder time with the rows.

So I tried checking the columns in a completed puzzle by turning the paper sideways and it worked! The numerals were a little harder to recognize because they were lying on their sides, but I still found I could check for duplicates in a column much more quickly this way.

Has anyone else noticed this? dcb
Back to top
View user's profile Send private message Send e-mail Visit poster's website
pseudo coup



Joined: 21 Sep 2005
Posts: 1
Location: Chicago

PostPosted: Fri Sep 30, 2005 9:55 pm    Post subject: Columns and rows Reply with quote

I'm a bean counter and look at columns of numbers for a living. I haven't noticed any difference between horizontal and vertical error recognition. My only expereince with reading has been in English, with some French and Spanish as an adult.
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    dailysudoku.com Forum Index -> General discussion All times are GMT
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group