# Sudoku Difficulty

Hi guys

I am trying to develop a sudoku app in ruby.
I want to have the difficulty levels…say easy Medium and hard

What decides the level of difficulty.How should i place my numbers
depending upon the difficulty level selected

On Sat, 19 Sep 2009 03:28:10 -0500, Vipul K. wrote:

Hi guys

I am trying to develop a sudoku app in ruby. I want to have the
difficulty levels…say easy Medium and hard

What decides the level of difficulty.How should i place my numbers
depending upon the difficulty level selected

Not a Sudoku expert but is it just the number of numbers initially

cheers,

Mark:

On Sat, 19 Sep 2009 03:28:10 -0500, Vipul K. wrote:

I am trying to develop a sudoku app in ruby. I want to
have the difficulty levels…say easy Medium and hard

What decides the level of difficulty.How should i place
my numbers depending upon the difficulty level selected

Not a Sudoku expert but is it just the number of numbers initially

I donâ€™t think itâ€™s this simple â€“ a proper Sudoku should be always
solveable without taking a guess, and I think the hardest are
the ones that put the solver in a position where thereâ€™s only
one non-guessing move on the whole board (or, at least, as few
such moves as possible), and taking this move leads to another
such hard situation.

â€” Shot

-------- Original-Nachricht --------

Datum: Sat, 19 Sep 2009 17:28:10 +0900
Von: Vipul K. [email protected]
An: [email protected]
Betreff: Sudoku Difficulty

Hi guys

I am trying to develop a sudoku app in ruby.
I want to have the difficulty levels…say easy Medium and hard

## What decides the level of difficulty.How should i place my numbers depending upon the difficulty level selected

Posted via http://www.ruby-forum.com/.

Dear Vipul,

What decides the level of difficulty.How should i place my numbers
depending upon the difficulty level selected

I am not quite sure whether the computational effort of a particular
implementation in solving a problem can really be mapped to the
psychological difficulty a subject finds in solving it.
This caveat apart, I’d take your application, or this one, if you are