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hughwill
Joined: 05 Apr 2010
Posts: 424
Location: Birmingham UK
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 Posted: Thu Nov 27, 2014 10:59 am Post subject: Nov 27 VH |
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After (very sparse) basics:
| Code: |
+----------------+----------------+--------------------+
| 3 8 6 | 9 2 1 | 4 7 5 |
| 9 47 147 | 58 34 58 | 2 6 13 |
| 24 5 124 | 7 34 6 | 138 138 9 |
+----------------+----------------+--------------------+
| 567 37 57 | 15 8 4 | 9 2 136 |
| 24568 234 245 | 125 157 9 | 135678 13458 13468 |
| 2458 1 9 | 3 6 257 | 578 458 48 |
+----------------+----------------+--------------------+
| 1 247 2457 | 2568 57 3 | 568 9 2468 |
| 2457 9 3 | 12568 157 2578 | 568 458 2468 |
| 25 6 8 | 4 9 25 | 13 13 7 |
+----------------+----------------+--------------------+
|
Play this puzzle online at the Daily Sudoku site
This one was a real cracker- very few basics and hard for me to see all the
way through (though I expect Dan or George will come up with a one-stepper).
(As always, 'select' in the white spaces to see solution).
First it needed a
| Quote: | | X wing on 2 (r69) setting r3c1 to 4 |
Then after more basics: | Code: |
+------------+---------------+----------------+
| 3 8 6 | 9 2 1 | 4 7 5 |
| 9 7 1 | 58 4 58 | 2 6 3 |
| 4 5 2 | 7 3 6 | 18 18 9 |
+------------+---------------+----------------+
| 567 3 57 | 15 8 4 | 9 2 16 |
| 568 24 45 | 125 157 9 | 35678 358 168 |
| 258 1 9 | 3 6 257 | 578 458 48 |
+------------+---------------+----------------+
| 1 24 457 | 2568 57 3 | 568 9 268 |
| 57 9 3 | 12568 157 578 | 568 458 2468 |
| 25 6 8 | 4 9 25 | 13 13 7 |
+------------+---------------+----------------+
|
Play this puzzle online at the Daily Sudoku site
| Quote: | | A 578 XYZ-Wing pivot r8c6 |
leaving basics only.
Took me ages- loved it!
Hugh |
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arkietech
Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA
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| Posted: Thu Nov 27, 2014 11:28 am Post subject: |
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| Code: | *-----------------------------------------------------------------------------*
| 3 8 6 | 9 2 1 | 4 7 5 |
| 9 47 147 | 58 34 58 | 2 6 13 |
| 24 5 124 | 7 34 6 | 138 138 9 |
|-------------------------+-------------------------+-------------------------|
| 567 37 57 | 15 8 4 | 9 2 136 |
| 24568 234 245 | 125 157 9 | 135678 13458 13468 |
| 2458 1 9 | 3 6 d57-2 | 578 458 48 |
|-------------------------+-------------------------+-------------------------|
| 1 247 2457 | 2568 b57 3 | 568 9 2468 |
| 2457 9 3 | 12568 157 c2578 | 568 458 2468 |
| 25 6 8 | 4 9 a25 | 13 13 7 |
*-----------------------------------------------------------------------------*
(2=5)r9c6-(5=7)r7c5-r8c6=7r6c6 => -2r6c6; ste
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This is called a Hybrid Wing (H-wing) 2/3rds xy-wing (ab) 1/3 extension (cd) |
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George Woods
Joined: 28 Mar 2006
Posts: 304
Location: Dorset UK
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| Posted: Thu Nov 27, 2014 6:31 pm Post subject: almost an xy wing and a hybrid |
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I solved it by what I call almost an xy wing- to wit if r6c6 is not 5 the an xy wing 257 pivoted at r9c6 leads to the aforesaid r6c6 becoming 7 so r6c6 is either 5 or 7 and not 2.
This gives the same result as the "hybrid xy wing" though it uses slightly different elements and in particular not r8c6 yet the two logics lead to the same conclusion! |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Thu Nov 27, 2014 8:53 pm Post subject: Re: Nov 27 VH |
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| hughwill wrote: | After (very sparse) basics:
| Code: |
+----------------+----------------+--------------------+
| 3 8 6 | 9 2 1 | 4 7 5 |
| 9 47 147 | 58 34 58 | 2 6 13 |
| 24 5 124 | 7 34 6 | 138 138 9 |
+----------------+----------------+--------------------+
| 567 37 57 | 15 8 4 | 9 2 136 |
| 24568 234 245 | 125 157 9 | 135678 13458 13468 |
| 2458 1 9 | 3 6 257 | 578 458 48 |
+----------------+----------------+--------------------+
| 1 247 2457 | 2568 57 3 | 568 9 2468 |
| 2457 9 3 | 12568 157 2578 | 568 458 2468 |
| 25 6 8 | 4 9 25 | 13 13 7 |
+----------------+----------------+--------------------+
|
Play this puzzle online at the Daily Sudoku site
This one was a real cracker- very few basics and hard for me to see all the
way through (though I expect Dan or George will come up with a one-stepper).
(As always, 'select' in the white spaces to see solution).
First it needed a
| Quote: | | X wing on 2 (r69) setting r3c1 to 4 |
Then after more basics: | Code: |
+------------+---------------+----------------+
| 3 8 6 | 9 2 1 | 4 7 5 |
| 9 7 1 | 58 4 58 | 2 6 3 |
| 4 5 2 | 7 3 6 | 18 18 9 |
+------------+---------------+----------------+
| 567 3 57 | 15 8 4 | 9 2 16 |
| 568 24 45 | 125 157 9 | 35678 358 168 |
| 258 1 9 | 3 6 257 | 578 458 48 |
+------------+---------------+----------------+
| 1 24 457 | 2568 57 3 | 568 9 268 |
| 57 9 3 | 12568 157 578 | 568 458 2468 |
| 25 6 8 | 4 9 25 | 13 13 7 |
+------------+---------------+----------------+
|
Play this puzzle online at the Daily Sudoku site
| Quote: | | A 578 XYZ-Wing pivot r8c6 |
leaving basics only.
Took me ages- loved it!
Hugh |
I'm not 100% sure, but I think the W-WING ON 57 does IT, although I haven't tested thoroughly. |
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George Woods
Joined: 28 Mar 2006
Posts: 304
Location: Dorset UK
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| Posted: Sat Nov 29, 2014 6:26 pm Post subject: |
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Marty wrote
Don;t know for sure.....
now that draw play is working again - the result of the W wing leads to a 7 in r7c5 and petting in that 7 and pressing "grade" gives the retult "easy" and that show s that the task is complete!! |
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RobertRattley
Joined: 24 Jun 2007
Posts: 118
Location: Australia
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| Posted: Sun Dec 07, 2014 7:56 pm Post subject: |
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I agree with hughwill's 2 stepper. It also took me a long time to solve this puzzle.
The x-wing makes the xyz wing available straight away before going ahead with a second round of basics. |
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lucygp
Joined: 29 Dec 2014
Posts: 3
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| Posted: Mon Dec 29, 2014 8:01 am Post subject: |
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pressing "grade" gives the retult "easy" and that show s
____________________________
Fifa 15 coins |
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