Check out our other websites: Babble alt|meat GiftBox Epigroove

Difficulty: Hard Thursday, November 19, 2009

Not Completed Play This Puzzle

CHAT LOG for Thursday, November 19, 2009

12:17 am
trueheart11

go
12:30 am
terri1986

done w/greens
12:34 am
Ed-was_here

Go
12:43 am
trueheart11

done. no greens
12:48 am
WHB

Done
12:57 am
Ed-was_here

Done with greens
2:37 am
eyeman

Mission accomplished.
5:08 am
Doll414

begin
5:34 am
Doll414

done, no greens
6:00 am
kaosangel

Morning. Go.
6:11 am
kixx

go
6:13 am
GreyDragon

Go!
6:13 am
kaosangel

Done. No Greens. Kept getting distracted ...
6:27 am
GreyDragon

Done. Not too bad for a hard,...
6:40 am
kixx

done, with greens
7:48 am
birdiepeikko

start
8:01 am
smooth_pappa

good mrning! start!
8:12 am
smooth_pappa

done. a little tricky in the middle
9:46 am
Gretchen

Easy with greens - missed a naked pair without greens
9:47 am
tceicher

what's a naked pair?
10:06 am
gman

Several clever answers escape me right not but a naked pair is when you have only two possibilities in a row, box or column. I think in this case it was a pair in the last column. You can eliminate all other possibilities that 'see' or share the pair. Does this make sense?
10:37 am
drwho

Difficulty score 43. Got it without green thanks to Gman's hint I found that naked pair.
10:44 am
drwho

Don't worry tceicher, in the context of Sudoku there is nothing salacious about a naked pair. If you need more explanation than gman gave see:
10:44 am
drwho

http://www.pauls-pc-repair.com/sudoku/index.p
hp?page=Techniques#NakedPairs
10:47 am
PuttPutt

Dr Who, are you still there ?
10:51 am
PuttPutt

Yesterdays puzzle is not showing in the archives and i did not complete it ??
10:51 am
drwho

Yes, but not for too much longer
10:53 am
PuttPutt

ok thanks very much
10:54 am
drwho

I don't have anything to do with this website except as a player. However, you can get to yesterday's puzzle in the archives at:

http://www.ironsudoku.com/archives/1349/
10:55 am
PuttPutt

thanks again
11:40 am
Marc

Anyone out there, is this puzzle solveble?
12:54 pm
K M

finished ... no guesses ... definitely doable with greens
1:17 pm
hurshy

what kind of a question is that? of course it is solvable. there's no such thing as an unsolvable sudoku. they're made to be solved. whether YOU can solve it, of course is an entirely different question...
1:44 pm
Andy

This one is solvable but you must use irrational numbers. The third box in the second row is pi.
1:44 pm
Andy

That said, GO
1:46 pm
drwho

I used transcendental numbers too.
1:47 pm
Andy

Excellent choice. I find that if I pipe the grid through a 3D Mandelbrot Set process, I get pretty pictures. No solutions though.
1:47 pm
drwho

Try a Julia set sometime.
1:47 pm
Andy

Oohhh... good idea.
1:49 pm
drwho

I remember writing a Mandelbrot plotting program on a Univac 1100 mainframe back when the Scientific American article came out about the Mandelbrot set.
1:49 pm
Andy

That very same article (I still have my copy) led me to create a program on my Atari 800XL. Took 24 hours per plot.
1:50 pm
drwho

I have a framed plot done with 8 pen plotters hanging on my walls and my parents have 1 too.
1:50 pm
Andy

hehe. Awesome!
1:51 pm
drwho

The mainframe could do the math much quicker than my Atari 1040ST, but the plotter took about 6-8 hours to complete the picture.
1:52 pm
Andy

I gave that computer away when I left for college and got a MacPlus... wish I still had it.
1:53 pm
drwho

My Atari is in my basement, but I know the hard drive is dead and probably the rest is too.
1:55 pm
Andy

Too sad...
1:55 pm
Andy

done with greens. auto greens even. auto greens + reds to be entirely accurate.
1:55 pm
Andy

Off to a meeting. Have a great day!
1:55 pm
drwho

Ooooh, a meeting!
3:19 pm
ypsigirl

done... way easy
3:44 pm
sandbox74

commence
4:02 pm
sandbox74

*sigh* greening up
4:09 pm
sandbox74

night vision did reveal the undressed twosome easily
4:09 pm
sandbox74

terminate
4:41 pm
Marc

Has anyone solved this grid. if so can you give me some hints?
4:45 pm
Marc

Where did everyone go
5:17 pm
gman

Marc you still there
7:34 pm
Inge

this was an allday undertaking, but I beat it at last
7:52 pm
Marc

I am back?
7:54 pm
helenkeller

done
7:55 pm
Marc

me too it was a difficult one
8:49 pm
Fizzbut

go
11:54 pm
hokie carla

I didn't find this one any harder than a usual Medium. I had to go full green, but I didn't have to do any trial & error plugging.
11:57 pm
eyeman

Well, let's see what joy Friday's will bring.