dailysudoku.com :: View topic - Vanhegan extreme August 22, 2012

dailysudoku.com
Discussion of Daily Sudoku puzzles

FAQ

Memberlist

Usergroups

Profile

Vanhegan extreme August 22, 2012

dailysudoku.com Forum Index -> Other puzzles

View previous topic :: View next topic

Author

Message

arkietech

Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA

Posted: Wed Aug 22, 2012 6:15 am Post subject: Vanhegan extreme August 22, 2012

Code:

*-----------*
|.9.|681|.7.|
|61.|3..|.58|
|...|.9.|...|
|---+---+---|
|1..|...|.25|
|5.4|...|7.9|
|97.|...|..6|
|---+---+---|
|...|.7.|...|
|38.|..6|.97|
|.5.|439|.8.|
*-----------*

Play/Print this puzzle online

tlanglet

Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills

Posted: Wed Aug 22, 2012 1:45 pm Post subject:

Code after basics:

Code:

*--------------------------------------------------*
| 24 9 5 | 6 8 1 | 23 7 234 |
| 6 1 7 | 3 2 4 | 9 5 8 |
| 8 234 23 | 7 9 5 | 126 16 124 |
|----------------+----------------+----------------|
| 1 36 368 | 9 4 7 | 38 2 5 |
| 5 23 4 | 128 6 238 | 7 13 9 |
| 9 7 238 | 125 15 23 | 138 4 6 |
|----------------+----------------+----------------|
| 24 246 9 | 128 7 28 | 5 136 123 |
| 3 8 12 | 125 15 6 | 4 9 7 |
| 7 5 126 | 4 3 9 | 126 8 12 |
*--------------------------------------------------*

I found this to be a fun, interesting puzzle. Several different techniques resulted in the same effective deletions but did not seem to directly contribute to a solution. But that endeavor led me to a long, somewhat messy chain.

2r1c1=2r7c1-(2=1)r8c3-r8c5=r6c5-r6c7=(1-3)r5c8=(3-6)r7c8=r9c7-r9c3=r7c2-(6=3)r4c2-(23=4)r53c2-(4=2)r1c1; 2r1c1

A shorter version of similar logic is
anp(6=24)r7c21-(2=1)r8c3-r8c5=r6c5-r6c7=(1-3)r5c8=(3-6)r7c8=r9c7; -6r7c8, r9c3

Ted

[Edited one time to add second version of solution]

arkietech

Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA

Posted: Wed Aug 22, 2012 2:23 pm Post subject:

Code:

*--------------------------------------------------*
|b24 9 5 | 6 8 1 |a23 7 24-3 |
| 6 1 7 | 3 2 4 | 9 5 8 |
| 8 234 23 | 7 9 5 | 126 16 124 |
|----------------+----------------+----------------|
| 1 36 368 | 9 4 7 | 38 2 5 |
| 5 23 4 | 128 6 238 | 7 13 9 |
| 9 7 238 | 125 15 23 | 138 4 6 |
|----------------+----------------+----------------|
|c24 246 9 |c128 7 c28 | 5 136 c123 |
| 3 8 12 | 125 15 6 | 4 9 7 |
| 7 5 126 | 4 3 9 | 126 8 12 |
*--------------------------------------------------*

(3=2)r1c7-(2=4)r1c1-(4=1283)r7c1469 => -3r1c9; stte

If r1c7 is not a 3 then r7c9 is a 3

Play/Print this puzzle online

SudoQ

Joined: 02 Aug 2011
Posts: 127

Posted: Wed Aug 22, 2012 3:13 pm Post subject:

arkietech wrote:

If r1c7 is not a 3 then r7c9 is a 3

A similar solution:

Code:

|--------------|---------------|-----------------|
|(24) 9 5 | 6 8 1 |(23) 7 24-3 |
| 6 1 7 | 3 2 4 | 9 5 8 |
| 8 234 23 | 7 9 5 | 1236 136 1234 |
|--------------|---------------|-----------------|
| 1 36 368 | 9 4 7 | 38 2 5 |
| 5 23 4 | 128 6 238 | 7 13 9 |
| 9 7 238 | 1258 15 238 | 138 4 6 |
|--------------|---------------|-----------------|
|(24) 2(46) 9 | 128 7 28 | 5 1(36) 12(3)|
| 3 8 12 | 125 15 6 | 4 9 7 |
| 7 5 126 | 4 3 9 | 126 8 12 |
|--------------|---------------|-----------------|

/SudoQ

Marty R.

Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA

Posted: Thu Aug 23, 2012 4:20 am Post subject:

Flightless M-Wing (12) in boxes 79 with long, convoluted pincer transport; r13c9<>2. W-Wing (16), SL 1 in c9; r1c7, r7c8<>6.

Display posts from previous:

	dailysudoku.com Forum Index -> Other puzzles	All times are GMT
Page 1 of 1

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum