Sudoku Puzzles

1) First eliminations to 23 filled cells.
2) Look at only possibles 6 in Cc. Look at only possibles 9 in Cg. Remove some possibles.3) Look at only possibles 28 in b9g9. Then simple to 51 filled cells.
4) Looking at only possibles 8 in Cf, remove d1=2, d2=2, f2=2. Now easy to 54 filled cells.
5) Look at only possibles 2 in Be2. Remove some possibles. Now easy to unique solution.

17:23 Thanks gw fm gw - but it was an easy 'tough'. Happy monday everyone.

?

Sorry for the outage this morning :(

why so few comments?
my time was 4:53, this one was easy.......i hope we get a harder one soon!!

Hi Baz and esther,
For measuring the toughness of a proof I use the number of links I needed for non-easy steps. This one required me 11 links, so I don't rate it easy compared to some others. If you found an easier solution, I'd gladly hear of it.

Due to comments, I thought I was gonna' get this one without fcs. Then there I was stuck at 51 finished, just as gb said. Used his hint #4 to finish. Happy Sunday from US midwest (though can't see any sun here...)

Thanks Gath for your work:)

tks Gath.. was wondering what was going on earlier

28:22

Shameless ignorance: Can someone explain how you use links? I assume it's a logical step beyond simple reduction or basic elimination (i.e., I know there can only be '8's in the first column in the first box, so therefore there can only be '8's in the third column in the second box), but how do you use them? Thanks! (And thanks, Gath, for this site!)

I can't believe it - only one guess!
I love this game.
(Tonight anyway)

Semi-tough; like the pix - keeps me warm in this frozen land

15:44 - That's a surprise considering I had to back track on a bit of a bungle I made. Certainly didn't expect the time I got! Enjoy your day!

tough done pat pat on back

15:47
Tough but made uncharacteristicly correct (calculated) guess at 51 and worked out from there.
I am in awe of you working out any system of toughness gb(france). I just figure I can do it or not. Assume my brain is either fast or slow.

7:04

23:11...7:30 pm 12/10/05

Gath.... where's my picture???

27:26 Hmmm.

what!!!

too hard

spent 45 minutes on paper and most of it down the tube.

i give up.

i am going outside in the lovely sunshine, grabbing a few melanomas and a beer.

check out my rabbits, sheep, chooks, dog, and the vege garden.

see you tomorrow.

hopefully it will be a little more to my liking


gRRRRRRRRRRRRRRRR

cheers

why isn't talking moose here??

25:01 and just happy to finish. Pant. Pant.

1:05 sec, no mistakes. I closed my eyes and saw the solution but was talking on phone at same time so took a min to multitask...

Not so Tough and a 'puzzling' photo. Is it cooking the marshmallows? Hi all up here in Toughsville.

One man's guess is another man's trial and error is another man's proof. In the end it's just a question of degree...

13.39 not too bad not too good. have a lovely day night morning etc.

To:Anne from Vermont.

For an explanation of 'chains' & 'links', go to Google. Put in 'sudoku sandbox'.

08:52 i didnt even wink fearing i may loose the continuity.kinda tough really














































More...

Hi everyone! So how are you Elsie? lovely and hot was'nt it yesterday??

Hello Cathy
That's a pretty small ant hill in the photo.
I don't know why we are so isolated.

your web is cool

with one guess :(

Deste lado do mundo tambem se joga

15:47

18:50..07/16/06

Mar. 9, 2007.