- Code: Select all
*-----------*
|6..|...|..1|
|..2|.8.|5..|
|.5.|...|.2.|
|---+---+---|
|.83|.6.|74.|
|41.|2.3|.68|
|.69|.4.|15.|
|---+---+---|
|.2.|...|.8.|
|..8|.9.|2..|
|7..|...|..6|
*-----------*
Play/Print this puzzle online
Dan's Dulce January 8, 2014
8 posts
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Dan's Dulce January 8, 2014
by ArkieTech » Wed Jan 08, 2014 12:28 am
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dan
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ArkieTech - Posts: 3355
- Joined: 29 May 2006
- Location: NW Arkansas USA
Re: Dan's Dulce January 8, 2014
by SteveG48 » Wed Jan 08, 2014 1:15 am
- Code: Select all
*--------------------------------------------------------------------*
| 6 379 4 | 579 27 2579 | 8 379 1 |
| 9-3 379 2 | 16 8 16 | 5 379 4 |
| 8 5 1 | 3479 37 479 | 6 2 79 |
*----------------------+----------------------+----------------------|
| 5 8 3 | 19 6 19 | 7 4 2 |
| 4 1 7 | 2 5 3 | 9 6 8 |
| 2 6 9 | 78 4 78 | 1 5 3 |
*----------------------+----------------------+----------------------|
|be139 2 6 | 3457 137 457 | 34 8 cd579 |
| a13 34 8 | 34567 9 4567 | 2 b17 c57 |
| 7 349 5 | 348 123 248 | 34 19 6 |
*--------------------------------------------------------------------*
(3=1)r8c1 - r7c1|(1=7)r8c8 - r7c9|(7=5)r8c9 - (5=9)r7c9 - (9=3)r7c1 => -3 r2c1 ; stte
Steve
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SteveG48 - 2019 Supporter
- Posts: 4259
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- Location: Orlando, Florida
Re: Dan's Dulce January 8, 2014
by pjb » Wed Jan 08, 2014 3:51 am
- Code: Select all
6 379 4 | 579 27 2579 | 8 379 1
39 379 2 | 16 8 16 | 5 379 4
8 5 1 | 3479 37 479 | 6 2 79
---------------------+----------------------+---------------------
5 8 3 | 19 6 19 | 7 4 2
4 1 7 | 2 5 3 | 9 6 8
2 6 9 | 78 4 78 | 1 5 3
---------------------+----------------------+---------------------
b139 2 6 | 3457 137 457 | 34 8 c579
a13 34 8 | 34567 9 4567 | 2 7-1 57
7 349 5 | 348 123 248 | 34 d19 6
(1) r8c1 = (1-9) r7c1 = r7c9 - (9=1) r9c8 => -1 r8c8; stte
Phil
- pjb
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Re: Dan's Dulce January 8, 2014
by tlanglet » Wed Jan 08, 2014 4:00 am
- Code: Select all
*--------------------------------------------------------------------*
| 6 379 4 | 579 27 2579 | 8 379 1 |
|d9-3 379 2 | 16 8 16 | 5 *37=9 4 |
| 8 5 1 | 3479 37 479 | 6 2 a79 |
|----------------------+----------------------+----------------------|
| 5 8 3 | 19 6 19 | 7 4 2 |
| 4 1 7 | 2 5 3 | 9 6 8 |
| 2 6 9 | 78 4 78 | 1 5 3 |
|----------------------+----------------------+----------------------|
|c139 2 6 | 3457 137 457 | 34 8 b579 |
|*13 34 8 | 34567 9 4567 | 2 *17 57 |
| 7 349 5 | 348 123 248 | 34 19 6 |
*--------------------------------------------------------------------*
AXY-wing (17-3) with pivot (17)r8c8 and pincers (13)r8c1 & (73=9)r2c8 => r2c1<>3
[xy-wing(17-3) => r2c1<>3] = [9r2c8-r3c9=r7c9-r7c1=9r2c1 => r2c1<>3] => r2c1<>3
Another perspective of this logic is the combination of a skyscraper(9) and an xy-wing(17-3)
[skyscraper(9)r8c19 => r2c8<>9] = [xy-wing(17-3)r8c81,r2c8] => r2c1<>3
Ted
Last edited by tlanglet on Wed Jan 08, 2014 2:41 pm, edited 1 time in total.
- tlanglet
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Re: Dan's Dulce January 8, 2014
by SteveG48 » Wed Jan 08, 2014 4:13 am
tlanglet wrote:AXY-wing (17-3) with pivot (17)r8c8 and pincers (13)r8c1 & (73=9)r2c8 => r2c1<>3
[xy-wing(17-3) => r2c1<>3] = [9r2c8-r3c9=r7c9-r7c1=9r2c1 => r2c1<>3] => r2c1<>3
Another perspective of this logic is the combination of a skyscraper(9) and an xy-wing(17-3)
[skyscraper(9)r8c19 => r2c8<>9] = [xy-wing(17-3)r8c81,r2c8] => r2c1<>3
Ted
Ted, your logic says -3 (correctly) but your grid says -9.
Steve
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SteveG48 - 2019 Supporter
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Re: Dan's Dulce January 8, 2014
by ArkieTech » Wed Jan 08, 2014 11:53 am
- Code: Select all
*--------------------------------------------------------------------*
| 6 379 4 | 579 27 2579 | 8 379 1 |
| 39 379 2 | 16 8 16 | 5 379 4 |
| 8 5 1 | 3479 37 479 | 6 2 79 |
|----------------------+----------------------+----------------------|
| 5 8 3 | 19 6 19 | 7 4 2 |
| 4 1 7 | 2 5 3 | 9 6 8 |
| 2 6 9 | 78 4 78 | 1 5 3 |
|----------------------+----------------------+----------------------|
|e39-1 2 6 | 3457 a137 457 | 34 8 579 |
| 13 34 8 | 34567 9 4567 | 2 17 57 |
| 7 d349 5 | 348 b123 248 | 34 c19 6 |
*--------------------------------------------------------------------*
S-wing
1r7c5=r9c4-(1=9)r9c8-r9c2=9r9c1 => -1r9c7; ste
dan
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ArkieTech - Posts: 3355
- Joined: 29 May 2006
- Location: NW Arkansas USA
Re: Dan's Dulce January 8, 2014
by tlanglet » Wed Jan 08, 2014 2:43 pm
SteveG48 wrote:tlanglet wrote:AXY-wing (17-3) with pivot (17)r8c8 and pincers (13)r8c1 & (73=9)r2c8 => r2c1<>3
[xy-wing(17-3) => r2c1<>3] = [9r2c8-r3c9=r7c9-r7c1=9r2c1 => r2c1<>3] => r2c1<>3
Another perspective of this logic is the combination of a skyscraper(9) and an xy-wing(17-3)
[skyscraper(9)r8c19 => r2c8<>9] = [xy-wing(17-3)r8c81,r2c8] => r2c1<>3
Ted
Ted, your logic says -3 (correctly) but your grid says -9.
Steve, it appears that 2014 is not going to be a good year for me; you spotted the second typo thus far.
Ted
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Re: Dan's Dulce January 8, 2014
by Marty R. » Wed Jan 08, 2014 4:57 pm
- Code: Select all
+-----------+----------------+------------+
| 6 379 4 | 579 27 2579 | 8 379 1 |
| 39 379 2 | 16 8 16 | 5 379 4 |
| 8 5 1 | 3479 37 479 | 6 2 79 |
+-----------+----------------+------------+
| 5 8 3 | 19 6 19 | 7 4 2 |
| 4 1 7 | 2 5 3 | 9 6 8 |
| 2 6 9 | 78 4 78 | 1 5 3 |
+-----------+----------------+------------+
| 139 2 6 | 3457 137 457 | 34 8 579 |
| 13 34 8 | 34567 9 4567 | 2 17 57 |
| 7 349 5 | 348 123 248 | 34 19 6 |
+-----------+----------------+------------+
Play this puzzle online at the Daily Sudoku site
M-Wing (1=9)r9c8-r9c2=(9-1)r7c1=1r8c1=>r8c8<>1
- Marty R.
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8 posts
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