Sudoku Puzzles

easiest 'tough' i have done, i normally get stuck on these ones, but hard are too easy

love the website

I love this game...=)

Finally a tough one that you could solve without guessing (well, there was another last week).
These are my favourites, I don't like guessing anymore, but go through logical deduction.

27.58

8.54

This one was easy.
Beatriz : all tough I tried were solvable without guessing (but some were hard to solve this way). See comments on 09/12/2005 (my favorite at this time).

Love the tough ones by logic, time bit slow 13:45

12.03 not bad

23.02 no cheating no help I like them tough, I get bored without the challenge

18.43 Am I becoming smart??? My brain still working well at the age 46! Wow!!!!

erg verslavend

this game is the best can't wait till tomorrow!!!

55:02, good for second time

8.53 haven't we had pyramids before - still a great brain teaser though. Has anyone tried loop the loop or bridges - still think sudoku is the best

Bit tricky but i stuck with it. Will they soon be setting up a Sudoku anon. for people who can't stop doing them?

20:00 Back to the Pyramids

Hi, i need some help.
Remind a sudoku is solved when you have proved there's ONLY ONE solution.
To call 'easy' a tough sudoku, I think one should solve it like Rosa said, no cheating, no help, no 'saving, trying a dead end till impossibility and reloading'.
continued...
For this one, I

Takes 30 min. I am too slow. I wish I knew how to do them faster.

For this one, i came easily straight to this position
23, 0, 0, 0, 0, 0, 234, 24, 0
267, 67, 0, 0, 57, 0, 0, 256, 0
367, 0, 0, 58, 0, 78, 36, 569, 39
0, 67, 34, 358, 457, 278, 268, 269, 29
0, 0, 0, 0, 0, 0, 0, 0, 0
367, 0, 34, 38, 47, 278, 268, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, More...

sorry grid is
0, 0, 0, 0, 0, 0, 24, 24, 0
0, 67, 0, 0, 57, 0, 0, 56, 0
67, 0, 0, 58, 0, 78, 36, 569, 39
0, 67, 34, 358, 457, 278, 268, 69, 29
0, 0, 0, 0, 0, 0, 0, 0, 0
67, 0, 34, 38, 47, 278, 268, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 234, 24, 23
0, 0, 0, 0, 0, More...

In both cases ,[1,7]=7, after which i'm easily done.
Is there anyone to help me finding an easier way to conclude?

finally a good time...6:08!...about time...lol :)

i did hard suduku, but i'm not able to do 'tough'one. Please help be, S.O.S.

If only I could post my proof with diagrams...

hi, lj.
Did you succeed filling the 51 first cells? If not, follow this ((grid numbered More...

Tough in 4:39 today. I agree with most of the posts... this one was an easy one today. I am usually in the 6 - 7 minute range on tough. Still love em though.

gb de France, peux-tu me dire que signifient les deux chiffres entre les crochets? rangée? colonne????
merci à l'avance

1er chiffre = colonne (1 à gauche).
2me chiffre = ligne (1 en bas).
bon courage

to cowardly to time - used 'check moves' - trying not to use helps.

I am starting to get the tough ones! Yipee!

à gb de France
J'avais déjà ces chiffres, mais après.... je suis devant un cul-de-sac

dans c8 24 sont forcément en [8,2] et [8,9], donc plus de 2 possible en [8,8] donc seul 2 possible dans l8 est en [1,8].
Bon courage

15:06 got to go back to work

6:21, no cheats

4.31. No guessing at all today. Easy one.

To gb from France
23, 0, 0, 0, 0, 0, 234, 24, 0
267, 67, 0, 0, 57, 0, 0, 256, 0
367, 0, 0, 58, 0, 78, 36, 569, 39
0, 67, 34, 358, 457, 278, 268, 269, 29
0, 0, 0, 0, 0, 0, 0, 0, 0
367, 0, 34, 38, 47, 278, 268, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 234, 24, 23
0, More...

... (accidentally cut off)
Thus [7,2] = 3.

To NJ
I'm not sure your argument is correct.
1) It may happen that a sudoku has not unique solution, (wrongly chosen by creator).
2)There are other 2s and 4s on the grid that may interfere sooner or later (eg here in [7,4]).

lets go to cairo immed!