dailysudoku.com

zigzagpython · Joined: 27 Sep 2005 Posts: 4

xxx x28 xxx
xxx xxx 3x8
xxx 9xx x65

xxx xx7 x83
x47 x3x 65x
69x 5xx xxx

21x xx9 xxx
4x5 xxx xxx
xxx 74x xxx

I am stuck in as follows, would any one help me with explanation?
xxx x28 xxx
xxx xxx 3x8
x84 9xx 265

xxx 697 483
847 x3x 659
693 584 xxx

21x xx9 xxx
475 xxx xxx
xxx 74x xxx

someone_somewhere · Joined: 07 Aug 2005 Posts: 275 Location: Munich

Hi,

You could continue like this:

5 not in r2c1, it is in r1c1 or r1c2 (Row on 3x3 Block interaction)
5 not in r2c2, it is in r1c1 or r1c2 (Row on 3x3 Block interaction)
6 not in r2c2, it is in r1c2 or r1c3 (Row on 3x3 Block interaction)
6 not in r2c3, it is in r1c2 or r1c3 (Row on 3x3 Block interaction)
9 not in r9c7, it is in r8c7 or r8c8 (Row on 3x3 Block interaction)
9 not in r9c8, it is in r8c7 or r8c8 (Row on 3x3 Block interaction)
2 in r2c2 - Sole Candidate
...

from here, you can try to swim alone.

see u,

Guest · Posted: Fri Sep 30, 2005 5:44 pm Post subject:

lovely instruction and tips.
thx very much it's the first time I solved the level four puzzle posted in Head Line Daily of Hong Kong.
Great! Wink

someone_somewhere · Joined: 07 Aug 2005 Posts: 275 Location: Munich

Hi,

Is there a Internet page of it, where we can find the Sudoku?
Or did you take it from a news-"paper"?

see u,

Guest · Posted: Sat Oct 01, 2005 5:25 pm Post subject:

it's from one of the free news paper in Hong Kong.
Usually, Monday the puzzle is Level 1, Tuesday and Wednesday are Level 2, Thursday is Level 3, and lastly Friday is the level 4.

I never solve Level 4 puzzles until yesterday you told me some skills. and finally I did it.

I am quite happy but I am stuck in today's very hard puzzle again
(from zigzagpython)

someone_somewhere · Joined: 07 Aug 2005 Posts: 275 Location: Munich

Hi,

There are no "very hard" Sudoku's, only week solver ;-)

Help a friend when he is in need, and he will remember you next time he has a problem.

Maybe I can help ...

see u,

Guest · Posted: Mon Oct 03, 2005 2:10 pm Post subject:

I recognize you as my sudoku master.
with your help and skill teaching I can solve some higher level puzzles.

I don't really get help from you any more Laughing

cos I really want to do it myself.
of course, my dear Master, whenever I am stuck in any puzzles again, I need your help Razz

Guest · Posted: Mon Oct 03, 2005 2:33 pm Post subject:

Hi,

There is always someone, better than me!

see u,

P.S. I solved about 40% of the 99 most difficult Sudoku positions and now I am am working on the rest (60%). Whenever you are ready, I can send you the 99 by email. One by one ... if you prefer ...

Guest · Posted: Tue Oct 04, 2005 3:18 pm Post subject:

my gal friend will kill me if I still fix my eyes on difficult puzzle.

but I would like to at least have a look at your 99 most difficult puzzles.

pls send to my e-mail, address is zigzagpython@yahoo.com.hk

thx