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  Topic: "too hard" Mauricio (2008.Mar.14)
SudoQ

Replies: 5
Views: 7177

PostForum: Other puzzles   Posted: Thu Dec 13, 2012 1:16 am   Subject: "too hard" Mauricio (2008.Mar.14)
r7c5<>2
r8c3<>7
r5c4<>5

or

r9c5<>2 !

/SudoQ
  Topic: Menneske 4668662
SudoQ

Replies: 5
Views: 9075

PostForum: Other puzzles   Posted: Wed Dec 05, 2012 3:26 pm   Subject: Menneske 4668662
A 8 cell solution:|---------------|-------------|----------------|
| 125 267 8 |(12) 45 3 | 9 1247 (1)6|
| 4 237 9 | 8 12 6 | 37 127 5 |
| 125 236 16 ...
  Topic: Menneske6905337
SudoQ

Replies: 14
Views: 18412

PostForum: Other puzzles   Posted: Tue Nov 13, 2012 10:43 pm   Subject: Menneske6905337
What I'm seeing superficially is that r5c4=1 -> a 268 triple in r5.
Since r5c1<>8, r5c9=8 -> a 26 pair in r5c12./SudoQ
  Topic: Menneske6905337
SudoQ

Replies: 14
Views: 18412

PostForum: Other puzzles   Posted: Tue Nov 13, 2012 10:15 am   Subject: Menneske6905337
r2c1=8 -> r2c6=1 -> r5c4=1 -> r5c9=8 ->
-> -> r6c4=8 -> r6c23=7 => r2c1<>8/SudoQ
  Topic: Vanhegan fiendish October 15, 2012
SudoQ

Replies: 5
Views: 6415

PostForum: Other puzzles   Posted: Mon Oct 15, 2012 4:18 pm   Subject: Vanhegan fiendish October 15, 2012
A similar pattern as arkietech posted:|-------------|--------------|------------|
| 3 (67) 19 |(67) 4 8 | 19 5 2 |
| 8 2 1-6 | 3 9 5 |1(6) 7 4 |
| 7 ...
  Topic: Free Press October 5, 2012
SudoQ

Replies: 4
Views: 6692

PostForum: Other puzzles   Posted: Sat Oct 06, 2012 6:38 am   Subject: Free Press October 5, 2012
A contradiction networks without BUGs and URs:
r1c1=8 -> r1c2=9 -> r8c1=9 -> r5c1=1 -> r5c7=7, r6c1=5 -> r7c8=7 -> r4c3=7 -> r4c9=59 => r1c1<>8/SudoQ
  Topic: Vanhegan fiendish September 19, 2012
SudoQ

Replies: 3
Views: 5238

PostForum: Other puzzles   Posted: Wed Sep 19, 2012 8:35 pm   Subject: Vanhegan fiendish September 19, 2012
Q8 and C5:

|---------------|
| 1 |
| (9)-8 |
| 4 |
|---------------|
| 7 |
| 238 |
| 6 |
|---------------|
|(2 ...
  Topic: AU Tough September 17, 2012
SudoQ

Replies: 7
Views: 8606

PostForum: Other puzzles   Posted: Wed Sep 19, 2012 3:08 am   Subject: AU Tough September 17, 2012
The HoDoKu XY-Chain:
http://i45.tinypic.com/ipxkbk.jpg
/SudoQ
  Topic: AU Tough September 17, 2012
SudoQ

Replies: 7
Views: 8606

PostForum: Other puzzles   Posted: Tue Sep 18, 2012 3:38 pm   Subject: AU Tough September 17, 2012
Hi,

can I include a picture, without a http address?

/SudoQ
  Topic: AU Tough September 17, 2012
SudoQ

Replies: 7
Views: 8606

PostForum: Other puzzles   Posted: Tue Sep 18, 2012 3:15 pm   Subject: AU Tough September 17, 2012
A pure bi-value chain:
|------------|----------|----------------|
| 8 5 3 | 2 1 6 | 9 7 4 |
| 12 7 4 | 3 8 9 | 56 12 56 |
| 9 (12) 6 | 5 4 7 | 123 8 ...
  Topic: AU Tough September 17, 2012
SudoQ

Replies: 7
Views: 8606

PostForum: Other puzzles   Posted: Tue Sep 18, 2012 1:10 pm   Subject: AU Tough September 17, 2012
If you let the HoDoKu program solve this puzzle, you get the following one-stepper:XY-Chain: 2 2- r2c8 -1- r2c1 -2- r8c1 -5- r8c9 -3- r3c9 -2- r7c9 -9- r7c4 -8- r7c2 -4- r5c2 -1- r3c2 -2 => r2c ...
  Topic: AU tough September 6, 2012
SudoQ

Replies: 6
Views: 6040

PostForum: Other puzzles   Posted: Sat Sep 08, 2012 4:04 pm   Subject: AU tough September 6, 2012
Maybe not as elegant as "Sue de Coq", but easier to understand!? Very Happy
|-----------|------------------|--------------|
| 7 8 4 | 9 56 56 | 1 23 23 |
| 9 3 2 | 1 7 ...
  Topic: AU Tough September 1, 2012
SudoQ

Replies: 8
Views: 8115

PostForum: Other puzzles   Posted: Tue Sep 04, 2012 2:52 pm   Subject: AU Tough September 1, 2012
I do not understand this step.
I think that it is an M-Ring, similar to the one daj showed.
|--------------------|--------------------|--------------|
| 4 35789 135689 | 68 16789 1678 | 57 ...
  Topic: AU Tough September 1, 2012
SudoQ

Replies: 8
Views: 8115

PostForum: Other puzzles   Posted: Sun Sep 02, 2012 2:30 pm   Subject: AU Tough September 1, 2012
r9c4=r4c5 (r789c6<>35)

/SudoQ
  Topic: Collection August 23, 2012
SudoQ

Replies: 12
Views: 11058

PostForum: Other puzzles   Posted: Thu Aug 23, 2012 12:59 pm   Subject: Collection August 23, 2012
Interesting Confused
Have the APES evolved? Very Happy|---------------|-------------|---------------|
| 8 1 3 | 56 7 2 | 56 4 9 |
| 7 (94)xz 5 | 68 3 49 | 2 68 1 |
| ...
  Topic: Collection August 23, 2012
SudoQ

Replies: 12
Views: 11058

PostForum: Other puzzles   Posted: Thu Aug 23, 2012 11:34 am   Subject: Collection August 23, 2012
A new method.

Isn't this a XYZ-wing?

/SudoQ
  Topic: Collection August 23, 2012
SudoQ

Replies: 12
Views: 11058

PostForum: Other puzzles   Posted: Thu Aug 23, 2012 8:55 am   Subject: Collection August 23, 2012
There are simpler steps, but this one has an additional value:|---------------|------------------|--------------------|
| 8 1 3 | 56 7 29 | 2569 4 69 |
| 7 469 5 | 46 ...
  Topic: Vanhegan extreme August 22, 2012
SudoQ

Replies: 4
Views: 5244

PostForum: Other puzzles   Posted: Wed Aug 22, 2012 3:13 pm   Subject: Vanhegan extreme August 22, 2012
If r1c7 is not a 3 then r7c9 is a 3
A similar solution:|--------------|---------------|-----------------|
|(24) 9 5 | 6 8 1 |(23) 7 24-3 |
| 6 1 7 | 3 2 ...
  Topic: Vanhegan Fiendish August 21, 2012
SudoQ

Replies: 8
Views: 6818

PostForum: Other puzzles   Posted: Tue Aug 21, 2012 2:05 pm   Subject: Vanhegan Fiendish August 21, 2012
I spotted the w-wing and quit. Embarassed
What's wrong with that!?

/SudoQ
  Topic: LA Times Diabolical Fri, 20-Jul-2012
SudoQ

Replies: 5
Views: 6016

PostForum: Other puzzles   Posted: Wed Aug 15, 2012 1:04 pm   Subject: Re: LA Times Diabolical Fri, 20-Jul-2012

The link doesn't work!
http://www.dailysudoku.com/sudoku/play.shtml?p=2:9:5:4:8:6:3:9:2:6:4:8:7:7:9:7:6:8:3:1:4&# ...
 
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