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Earl
Joined: 30 May 2007
Posts: 677
Location: Victoria, KS
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 Posted: Sat Apr 18, 2009 1:52 am Post subject: April 18 VH |
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Two obvious single-step solutions. Take your pick.
Solutions: UR 48 or UR 29
Early Earl |
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tlanglet
Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
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| Posted: Sat Apr 18, 2009 2:19 am Post subject: |
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A less obvious one stepper is | Quote: | a Kraken x-wing <9>.
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Ted |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Sat Apr 18, 2009 4:16 am Post subject: |
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| I tried a non-UR solution. An X-Wing on 4 set up a puzzle-ending W-Wing on 89. |
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Clement
Joined: 24 Apr 2006
Posts: 1113
Location: Dar es Salaam Tanzania
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| Posted: Sat Apr 18, 2009 6:58 am Post subject: Daily Sudoku: Sat 18-Apr-2009 VH |
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| A UR<48> solves the puzzle. |
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cgordon
Joined: 04 May 2007
Posts: 769
Location: ontario, canada
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| Posted: Sat Apr 18, 2009 12:05 pm Post subject: |
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| This should be saved for VH Sudokus 101. There are two Type 1 UR's, x-wings on 4, colouring on 8, an ER on 9 and a Skyscraper on 9. |
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gindaani
Joined: 06 Mar 2009
Posts: 79
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| Posted: Sat Apr 18, 2009 5:47 pm Post subject: |
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| All I needed was a 498 xy-wing to solve this one. |
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storm_norm
Joined: 18 Oct 2007
Posts: 1741
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| Posted: Sat Apr 18, 2009 10:38 pm Post subject: |
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hmm
my BUG+2 reasoning wasn't correct.
Last edited by storm_norm on Sun Apr 19, 2009 1:43 am; edited 1 time in total |
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daj95376
Joined: 23 Aug 2008
Posts: 3854
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| Posted: Sun Apr 19, 2009 1:34 am Post subject: |
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[Withdrawn]
Last edited by daj95376 on Sun Apr 19, 2009 1:52 am; edited 2 times in total |
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storm_norm
Joined: 18 Oct 2007
Posts: 1741
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| Posted: Sun Apr 19, 2009 1:45 am Post subject: |
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| daj95376 wrote: | Norm: There are four cells with three candidates. I don't think you can do a BUG+2 here.
| Code: | +-----------------------------------------------------+
| 2 68 7 | 5 1 46 | 48 9 3 |
| 4 69 3 | 29 8 26+9 | 7 1 5 |
| 1 5 89 | 3 49 7 | 2 6 48 |
|-----------------+-----------------+-----------------|
| 35 4 59 | 8 2 39 | 6 7 1 |
| 7 1 2 | 6 49 5 | 89+4 3 48 |
| 38 89 6 | 1 7 34+9 | 49 5 2 |
|-----------------+-----------------+-----------------|
| 9 7 1 | 4 3 8 | 5 2 6 |
| 58 3 45+8 | 29 6 29 | 1 48 7 |
| 6 2 48 | 7 5 1 | 3 48 9 |
+-----------------------------------------------------+
# 30 eliminations remain
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is it just me, or do you gun for me the most?
if you love me, just say it. |
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daj95376
Joined: 23 Aug 2008
Posts: 3854
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| Posted: Sun Apr 19, 2009 1:50 am Post subject: |
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| storm_norm wrote: | is it just me, or do you gun for me the most?
if you love me, just say it. |
I'm not gunning for you, but I do promise not to comment further on your posts. |
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storm_norm
Joined: 18 Oct 2007
Posts: 1741
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| Posted: Sun Apr 19, 2009 2:02 am Post subject: |
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| daj95376 wrote: | | storm_norm wrote: | is it just me, or do you gun for me the most?
if you love me, just say it. |
I'm not gunning for you, but I do promise not to comment further on your posts. |
oh boy.
it was a joke, Danny. |
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swando
Joined: 09 Mar 2009
Posts: 22
Location: Surrey, BC. Canada
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| Posted: Sun Apr 19, 2009 8:39 am Post subject: |
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| I found this one very tricky...I can spot and solve x wings, xy's and xyz but I don't know what you call the 29,29,29, 296. I figured it out but not sure what it is called. |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Sun Apr 19, 2009 3:30 pm Post subject: |
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Swando,
It's called a Type 1 Unique Rectangle (UR). You can read more about URs here:
http://www.sudoku.com/boards/viewtopic.php?p=29105#29105
| Code: |
+------------+-----------+-----------+
| 2 68 7 | 5 1 46 | 48 9 3 |
| 4 69 3 | 29 8 269 | 7 1 5 |
| 1 589 589 | 3 49 7 | 2 6 48 |
+------------+-----------+-----------+
| 35 4 59 | 8 2 39 | 6 7 1 |
| 7 1 2 | 6 49 5 | 489 3 48 |
| 38 89 6 | 1 7 349 | 49 5 2 |
+------------+-----------+-----------+
| 9 7 1 | 4 3 8 | 5 2 6 |
| 58 3 458 | 29 6 29 | 1 48 7 |
| 6 2 48 | 7 5 1 | 3 48 9 |
+------------+-----------+-----------+
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Play this puzzle online at the Daily Sudoku site |
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