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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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 Posted: Fri Oct 06, 2017 5:08 am Post subject: Oct. 6 VH |
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| Code: |
+-----------+---------+-------------+
| 8 9 46 | 3 7 2 | 1 5 46 |
| 5 46 3 | 9 8 1 | 67 47 2 |
| 7 2 1 | 4 6 5 | 9 8 3 |
+-----------+---------+-------------+
| 6 3 7 | 1 2 48 | 58 49 459 |
| 9 1 48 | 6 5 3 | 28 24 7 |
| 2 45 458 | 7 9 48 | 3 6 1 |
+-----------+---------+-------------+
| 3 567 2 | 8 4 9 | 567 1 56 |
| 1 57 59 | 25 3 6 | 4 279 8 |
| 4 8 569 | 25 1 7 | 256 3 569 |
+-----------+---------+-------------+
|
Play this puzzle online at the Daily Sudoku site
1) XY-Wing Chain (45-46-46-46-56)b1349=> -5r7c2
2) XYZ-Wing (57-6), hinged r7c7=> -6r9c7 |
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ZeroAssoluto
Joined: 05 Feb 2017
Posts: 940
Location: Rimini, Italy
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| Posted: Fri Oct 06, 2017 7:39 am Post subject: |
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Hi everyone,
| Code: |
+-----------+---------+-------------+
| 8 9 46 | 3 7 2 | 1 5 46 |
| 5 46 3 | 9 8 1 | 67 47 2 |
| 7 2 1 | 4 6 5 | 9 8 3 |
+-----------+---------+-------------+
| 6 3 7 | 1 2 48 | 58 49 459 |
| 9 1 48 | 6 5 3 | 28 24 7 |
| 2 45 458 | 7 9 48 | 3 6 1 |
+-----------+---------+-------------+
| 3 567 2 | 8 4 9 | 567 1 56 |
| 1 57 59 | 25 3 6 | 4 279 8 |
| 4 8 569 | 25 1 7 | 256 3 569 |
+-----------+---------+-------------+
|
Play this puzzle online at the Daily Sudoku site
| Quote: | Skyscraper with number 4 in r1c39,r5c38 and -4 in r2c8,r4c9
or
Skyscraper with number 4 in r2c28,r5c38 and -4 in r1c3,r6c2
or
Finned X-Wing with number 6 in r19c39 finned r9c7and -6 in r7c9
or
Simple Colors with number 6 in black=r1c3,r2c7,r7c2 withe=r1c9,r2c2,r9c3 and -6 in r7c9,r9c7 |
Ciao Gianni
P.S. @Marty
With the XYZ-Wing you can go to the end without using other techniques? |
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ZeroAssoluto
Joined: 05 Feb 2017
Posts: 940
Location: Rimini, Italy
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| Posted: Fri Oct 06, 2017 10:02 am Post subject: |
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@Marty,
excuse me, another question
XY-Wing Chain is the same or different from XY-Chain?
Thanks Gianni |
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Ajò Dimonios
Joined: 01 May 2017
Posts: 339
Location: Sassari Italy
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| Posted: Fri Oct 06, 2017 10:22 am Post subject: |
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Hi everyone
skyscraper ( 4 finned fishes x-wing)
4(Line 1 and line 5, fin R5C8=4)=>-4R4C9=>stte
or
4(Line 1 and line 5, fin R1C9=4)=>-4R2C8=>stte
Ciao a Tutti
Paolo |
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George Woods
Joined: 28 Mar 2006
Posts: 304
Location: Dorset UK
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| Posted: Fri Oct 06, 2017 1:22 pm Post subject: Is this the same as a skyscraper? |
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| A 4 in r1c3 immediately leads to a 4 in r2c8 which leaves row 5 destitute of 4s! so r1c3 cannot be 4 ...ste |
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hughwill
Joined: 05 Apr 2010
Posts: 424
Location: Birmingham UK
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| Posted: Fri Oct 06, 2017 6:02 pm Post subject: Re: Oct. 6 VH |
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| Marty R. wrote: |
Play this puzzle online at the Daily Sudoku site
1) XY-Wing Chain (45-46-46-46-56)b1349=> -5r7c2
2) XYZ-Wing (57-6), hinged r7c7=> -6r9c7 |
After the XYZ wing: | Code: |
+-----------+---------+------------+
| 8 9 46 | 3 7 2 | 1 5 46 |
| 5 46 3 | 9 8 1 | 67 47 2 |
| 7 2 1 | 4 6 5 | 9 8 3 |
+-----------+---------+------------+
| 6 3 7 | 1 2 48 | 58 49 459 |
| 9 1 48 | 6 5 3 | 28 24 7 |
| 2 45 458 | 7 9 48 | 3 6 1 |
+-----------+---------+------------+
| 3 567 2 | 8 4 9 | 67 1 56 |
| 1 57 59 | 25 3 6 | 4 279 8 |
| 4 8 69 | 25 1 7 | 25 3 69 |
+-----------+---------+------------+
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Play this puzzle online at the Daily Sudoku site
Marty, Don't we need a X wing on 6 r19 (r7c9<>6) to put this to bed?
Hugh |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Fri Oct 06, 2017 6:04 pm Post subject: |
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| ZeroAssoluto wrote: | @Marty,
excuse me, another question
XY-Wing Chain is the same or different from XY-Chain?
Thanks Gianni |
Gianni,
An XY-Chain is an AIC consisting only of bivalue cells. An XY-Wing is the shortest possible XY-Chain.
An XY-Wing Chain is where three remote pairs can serve as the XY cell of an XY-Wing as long as the first and third remote pairs see the XZ and YZ cells. In this case I saw no 46-5 XY-Wing, but but the three 46 cells serve as the XY cell and work with a 45 and 65 cell as an XY-Wing.
| Quote: | P.S. @Marty
With the XYZ-Wing you can go to the end without using other techniques? |
Yes, not by itself, but as a second move. |
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ZeroAssoluto
Joined: 05 Feb 2017
Posts: 940
Location: Rimini, Italy
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| Posted: Fri Oct 06, 2017 9:51 pm Post subject: |
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| Thanks Marty |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Sat Oct 07, 2017 3:17 am Post subject: |
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| Quote: | | Marty, Don't we need a X wing on 6 r19 (r7c9<>6) to put this to bed? |
Hugh, we need something; I can't see any additional basics. |
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ZeroAssoluto
Joined: 05 Feb 2017
Posts: 940
Location: Rimini, Italy
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| Posted: Sat Oct 07, 2017 7:16 am Post subject: |
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Hi Marty,
if I can help, I think the problem is that, as in my case, I thought that to solve the scheme you would use XY-Wing Chain OR XYZ-Wing, not both.
That's why I asked you if you use other techniques after XYZ-Wing.
Maybe that's the misunderstanding with me and Hugh.
Ciao Gianni |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Sat Oct 07, 2017 6:23 pm Post subject: |
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| ZeroAssoluto wrote: | Hi Marty,
if I can help, I think the problem is that, as in my case, I thought that to solve the scheme you would use XY-Wing Chain OR XYZ-Wing, not both.
That's why I asked you if you use other techniques after XYZ-Wing.
Maybe that's the misunderstanding with me and Hugh.
Ciao Gianni |
Could be. I do most of my puzzles with pencil and paper and, unfortunately, I'm prone to mechanical errors. I thought that neither the XY-Wing chain nor the XYZ-Wing was a one-stepper, so I played the chain first followed by the wing. I do not get upset when someone points out my errors and I urge you to let me know if you see something I did wrong. |
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keith
Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
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| Posted: Mon Oct 30, 2017 7:41 am Post subject: |
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| Code: |
+-------+-------+-------+
| . 9 . | . 7 . | . 5 . |
| 5 . 3 | 9 . . | . . 2 |
| . . . | 4 6 . | 9 . . |
+-------+-------+-------+
| 6 . 7 | . 2 . | . . . |
| 9 . . | 6 . 3 | . . 7 |
| . . . | . 9 . | 3 . 1 |
+-------+-------+-------+
| . . 2 | . 4 9 | . . . |
| 1 . . | . . 6 | 4 . 8 |
| . 8 . | . 1 . | . 3 . |
+-------+-------+-------+
|
Play this puzzle online at the Daily Sudoku site
After basics:
| Code: | +-------------+-------------+-------------+
| 8 9 46 | 3 7 2 | 1 5 46 |
| 5 46 3 | 9 8 1 | 67 47 2 |
| 7 2 1 | 4 6 5 | 9 8 3 |
+-------------+-------------+-------------+
| 6 3 7 | 1 2 48 | 58 49 459 |
| 9 1 48 | 6 5 3 | 28 24 7 |
| 2 45 458 | 7 9 48 | 3 6 1 |
+-------------+-------------+-------------+
| 3 567 2 | 8 4 9 | 567 1 56 |
| 1 57 59 | 25 3 6 | 4 279 8 |
| 4 8 569 | 25 1 7 | 256 3 569 |
+-------------+-------------+-------------+ |
There are two XYZ-wings:
2-56 in R9C9
5-67 in R9C7
After the second you still need an x-wing.
HSH points out a number of other interesting possibilities:
| Code: |
+-----------+-----------+-----------+
| 8 9 . | 3 7 2 | 1 5 . |
| 5 . 3 | 9 8 1 | . . 2 |
| 7 2 1 | 4 6 5 | 9 8 3 |
+-----------+-----------+-----------+
| 6 3 7 | 1 2 . | . . . |
| 9 1 . | 6 5 3 | . . 7 |
| 2 . . | 7 9 . | 3 6 1 |
+-----------+-----------+-----------+
| 3 . 2 | 8 4 9 | . 1 . |
| 1 . . | . 3 6 | 4 . 8 |
| 4 8 . | . 1 7 | . 3 . |
+-----------+-----------+-----------+
+--------------------------+--------------------------+--------------------------+
| 8 9 46 | 3 7 2 | 1 5 46 |
| 5 46 3 | 9 8 1 | 67 47 2 |
| 7 2 1 | 4 6 5 | 9 8 3 |
+--------------------------+--------------------------+--------------------------+
| 6 3 7 | 1 2 48 | 58 49 459 |
| 9 1 48 | 6 5 3 | 28 24 7 |
| 2 45 458 | 7 9 48 | 3 6 1 |
+--------------------------+--------------------------+--------------------------+
| 3 567 2 | 8 4 9 | 567 1 56 |
| 1 57 59 | 25 3 6 | 4 279 8 |
| 4 8 569 | 25 1 7 | 256 3 569 |
+--------------------------+--------------------------+--------------------------+
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[url=http://sudoku.saueregger.at/HSH/HSF.htm?p=*EN*HSF3:39:42 AM*6*10/30/2017*8:9:46:3:7:2:1:5:46:5:46:3:9:8:1:67:47:2:7:2:1:4:6:5:9:8:3:6:3:7:1:2:48:58:49:459:9:1:48:6:5:3:28:24:7:2:45:458:7:9:48:3:6:1:3:567:2:8:4:9:567:1:56:1:57:59:25:3:6:4:279:8:4:8:569:25:1:7:256:3:569:*]Print (PDF) using Helmut's Sudoku Formatter[/url]
Keith |
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