Sudoku Sudoku


Submit your own Pic! 21 Comments
Play this pic as a Jigsaw
or Sliding Puzzle
Previous / Next
Play sudoku on your site/blog

Choose a number, and place it in the grid above.
  1 2 3 4 5 6 7 8 9
This number is a possibility
Automatically remove Possibilities
Allow incorrect Moves
Clicking the playing grid places the current number
Highlight Current Square
Grey out Used Numbers
Possibilities in Grid Format
Check out the latest post in the Sudoku Forum

Welcome to the Sudoku Forums!

Submitted by: Gath

Indicate which comments you would like to be able to see

11/Jun/10 12:24 AM
 |  |
1) Start 23 UP 28 SSTS UP 29 SSTS
2) (1)g5 = (1-7)a5 = (7-2)a4 = (2)h4 => h4<>1; LC(1); UP 30
3) (3)f123 = [(8=3)g7 - f7 =* f4 - de6 = HP(36)gi6 - (12)g6 = NT(368)g679] - (8)g3 = (8-4)i3 = (4-1)a3 = (1)df3 - (1=3)e1 loop => d3<3, f1<>1, a3<>239, i3<>39; UP More...
11/Jun/10 12:51 AM
 |  |

Pretty in Pink, Sue!
11/Jun/10 1:37 AM
 |  |
Steve: I didn't realize something like:
(12)g6=NT(368)g679 (in your long step 3 inner chain) was kosher. Obviously valid now that I think about it. Also your isolated set (3)f7=(3)f4 in the inner chain is new to me (but this time not obvious - but again if the inner chain is not true/valid (what More...
11/Jun/10 1:43 AM
 |  |
Steve: I see it now - since the inner chain is valid as it stands when 3f7=3f4 that is the only pertinent way it could possibly be false as well.
11/Jun/10 1:51 AM
 |  |
Steve: isn't there a problem if (3)f1=(3)f4 is true - then both sides could be false and the reasoning incorrect??
11/Jun/10 1:58 AM
 |  |
if f7 contrives to make both false it fails ingloriously and one OR the other is still true - the light dawns!
11/Jun/10 2:11 AM
 |  |
At least one of (3)f12347 is true. I break that into three groups, as noted: f123,f4,f7.

If the inner chain is not "true", that can only happen if (3)f123 is true. In that case, since the macro chain is a continuous loop, all the stuff from the end of the chain is More...
11/Jun/10 2:15 AM
 |  |
Off Topic:
Steve, I just send you a Message...
Maybe, this is my last comment here

11/Jun/10 2:32 AM
 |  |
Tough. About an hour :-(. to you all from rainy Portland, Oregon.
11/Jun/10 2:32 AM
 |  |

Beautiful, Sue.
11/Jun/10 6:11 AM
 |  |

25:35, hi everyone.
11/Jun/10 7:42 AM
 |  |
notice: I just posted the Krakenese for the too tough Feb-16-10 (praxis).
11/Jun/10 8:47 AM
 |  |
Thanks for the pm. Hopefully you can find time to return here from time to time.
11/Jun/10 9:31 AM
 |  |
My compliments too, Steve, on a great solution. Here is my understanding of it, with a couple of questions:
Step 3): If e1=1,a4=1 and g5=1. When e1=3, both f7=3 or f4=3 leads to g5=1 ,and, also i3=8, making a3=4. So g5=1 and a3=14, creating a 124 triple in column a. On my grid,this already is More...
11/Jun/10 11:52 PM
 |  |
55:02 in order
12/Jun/10 5:47 AM
 |  |
Thanks Alfred. Indeed, I thought that I had caught that typo...... but I did not! e4<>1 is the correct conclusion at that point. Sometimes, I may count the UPs differently, if I do not include the execution of perhaps a couple of easy type steps - this is an old bad habit of mine.
12/Jun/10 11:13 AM
 |  |

10/Sep/10 9:56 PM
 |  |
1.SSTS to UP29
2.(1)g5=a5-(1=24)ab6-(2)g6=h4-(167')h489=(6)g9 > -1h4 -6g6, UP31
3.K column(3)f loop> -3g1d3e4 +14a3, UP36
4.(3=7)i4-h4=h9-(7=3) e9-e1=f13 > -3f4, UP81
22/Jan/11 1:53 PM
 |  |
similar to but not the same notes as Steve's looped kraken.
22/Jan/11 2:38 PM
 |  |
continuing theme of reducing krakens:


where SS means SkyScraper.
22/Jan/11 2:56 PM
 |  |
Please Log in to post a comment.

Not a member? Joining is quick and free.
As a member you get heaps of benefits.
Click Here to join.
You can also try the Chatroom (No one chatting right now - why not start something? )
Check out the Sudoku Blog     Subscribe
Or try the Kids Sudokus (4x4 & 6x6)
Printer Friendly versions:
Members Get Goodies!
Become a member and get heaps of stuff, including: stand-alone sudoku game, online solving tools, save your times, smilies and more!
Welcome our latest Members
daamsie from VIC
Max from Wodonga
Member's Birthdays Today
bluey from Port Kembla, Angry Ant from Canberra, Crocket from Tallangatta
Friends currently online
Want to see when your friends are online? Become a member for free.

Network Sites

I Want That Flight finds you cheap flights
Melbourne Bars Find the Hidden Bars of Melbourne
Free Crossword Puzzles Play online or print them out. 2 new crosswords daily.
Jigsaw Puzzles Play online jigsaw puzzles for free, with new pictures everyday
Sliding Puzzle Play online with your own photos
Flickr Sudoku Play sudoku with pictures from Flickr
Kakuro Play Kakuro online!
Wordoku Free Wordoku puzzles everyday.
Pumpkin Carving Pattern Free halloween pumpkin carving patterns.