Timer
00:00:00
Sudoku Sudoku

Help

Submit your own Pic! 24 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

BREAKING NEWS

Submitted by: uno hu

Indicate which comments you would like to be able to see

Regardless, Mr. Cornstalk ... we appreciate the valiant effort!
22/May/10 12:12 AM
 |  |

A persistant strain of corn!
22/May/10 1:08 AM
 |  |
1) Start 22 UP 27
2a) LC(2)def9 => ghi9<>2
2b) XW(5)eg24 => e15g35<>5
2c) (6)c5= (6-8)a4 = e4 - (8=2)e5 => c5<>2
2d) (6)c5 = (6-8)a4 = (8-5)e4 = g4 - h5 = (5-6)h3 = (6)h5 loops => a4<>29, e4<>2; h3<>238; h5<>23
2e) LC(2)ac6 => efhi6<>2; UP 81

9 unique sis required + UPs
22/May/10 1:27 AM
 |  |
1. Basic techniques to UP = 27
2. (5): X-wing eg2|eg4 => e15, g35 <> 5
3. (2=798)ac6|b5 - (8=2)e5 - (2=9)d4 - (9=562)gi4|h5 => c5, h6 <> 2 ; UP = 81

Steve: Thanks for the comment on the May 16 page.
22/May/10 1:45 AM
 |  |
rwm very nice step 3! I would add hi6<>2
22/May/10 1:53 AM
 |  |
Have a great weekend, everyone!
22/May/10 1:56 AM
 |  |

1)Start at 22,basic techniques to UP=27
2)Loop:(5)e4=g4-g2=(5-6)e2=i2-i4=(6-8)a4=(8)e4
=>e15g35<>5,e2=56,i13<>6,a4=68 ,e4=58
3)(3)h6=(3-7)i6=g5-(7=8)b5-(8=2)e5-c5=(2)ac6,=>h6<>2.UP=81
22/May/10 2:12 AM
 |  |

26:39
22/May/10 3:11 AM
 |  |
maen all! nice drip strip...the week we put our corn in it froze, flooded, and then the wind blew for a week...its ankle high already and doing fine...luckily it was still underground through the bad stuff...we still won't get any sweet until august the earliest.
22/May/10 3:13 AM
 |  |
a little different twist: at rwm's step 3:
3. (8=279)agi7-(2)h7=(2)h6-(2)a6=(*256)a431, => a431<>8 UP=81.
22/May/10 3:35 AM
 |  |
rwm: I just read your May-16 note (to see Steve's input). Clearly you misunderstood my note of May-17. That was a reversal of my May-16 first impression and an affirmation of the idea (with the reservations about where deductions are pulled when using what I now call K-Sets.).
22/May/10 4:27 AM
 |  |
1. Unique possibilities to 27.
2. If a4=8=c7,b5=7,(pair 29 at ac6),h6=3,h8=1;column c is devoid of 1.So e4=8.UP81.
22/May/10 7:06 AM
 |  |

35:26, too long but at least I finished it. all.
22/May/10 7:17 AM
 |  |
Alfred - a very nice step you found. I especially like that you can execute your step without using any other techniques except singles before and after. Congrats on reducing this puzzle to a one trick pony! I know that you do not prefer AIC's or other terminology. I hope that you are not More...
22/May/10 9:15 AM
 |  |
There's always next season!!
22/May/10 9:29 AM
 |  |
Thanks Steve.You are welcome to "translate" my step to Eureka notation. Because I am not so familiar with that notation, to me, it looks much more complicated.

Regards, Alfred.
22/May/10 9:48 AM
 |  |
one trick? you still have to make hidden and locked set eliminations after (8)e4 to get UP 81.
The chain I used doesn't require the (5)XWing step and proves (8)e4 inter alia. (uses 3 strong sets). So:

1. basic techniques UP=27.
2. (8=279)agi7-(2)h7=(2)h6-(2)a6=(*256)a431, => ~(8)a431 UP=81.
22/May/10 10:29 AM
 |  |
Hi farpointer. After e4=8,g4=5=h3,all the rest seem to be UPs.

Regards, Alfred.
22/May/10 11:24 AM
 |  |
Alfred: that wasn't my point. Are you (and Steve) really claiming - hmm.. I see this naked triple sitting here .. oh well, I will just ignore it and look for some complicated ten link chain leading to a contradiction instead! - I don't buy it.
22/May/10 2:07 PM
 |  |
farpointer: To go from the original puzzle (UP22) to UP27, every new cell has only one possibility. Any other possibilities lead to an immediate contradiction. After e4=8, the same applies from UP27 to UP81. I have just checked on that again.
There is a 56 pair at h35 in this puzzle, but it did not have to be invoked here.
Regards, Alfred.
22/May/10 4:30 PM
 |  |
Farpointer,
I merely wished to comment that Alred's step did not require any of the simple steps except singles to execute, and that it did not require any steps but singles after execution.
I would think that it is rare that one would not execute, or at least note, the simple steps that More...
22/May/10 6:53 PM
 |  |

21:39
22/May/10 11:11 PM
 |  |
25:23 in order
26/May/10 2:15 AM
 |  |

SE=7.2
10/Sep/10 9:47 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
EasyMediumHardTough
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
DownOnTheFarm from Nyora VIC
gerald christie from NORTHAMPTON
The_Vat from Brisbane
Member's Birthdays Today
Susan from SoCal
Friends currently online
Want to see when your friends are online? Become a member for free.

Network Sites

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.
Purely Facts Test your General Knowledge.
Pumpkin Carving Pattern Free halloween pumpkin carving patterns.