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daj95376
Joined: 23 Aug 2008
Posts: 3854
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 Posted: Wed Apr 22, 2009 11:04 am Post subject: Set T_03 Puzzle 125 -- Advanced |
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| Code: | +-----------------------+
| 2 . . | . . . | 5 3 . |
| . 5 . | . . . | . . . |
| . . 1 | 7 . . | 4 . 2 |
|-------+-------+-------|
| . . 2 | 5 . . | 1 . 6 |
| . . . | . 2 . | . . 5 |
| . . . | . . . | 7 2 . |
|-------+-------+-------|
| 7 . 5 | 8 . 2 | . 4 . |
| 4 . . | . . 1 | 8 . . |
| . . 8 | 6 5 . | . . 7 |
+-----------------------+
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Play this puzzle online at the Daily Sudoku site |
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tlanglet
Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
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| Posted: Thu Apr 23, 2009 3:14 am Post subject: |
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I found some odds and ends but nothing really useful. Then I found a two stepper. | Quote: | Finned x-wing 3 r26c36 deletes 3 r6c45,
A Type 2 UR 39 r39c12 deletes 8 r3c5.
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Ted  |
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wapati
Joined: 10 Jun 2008
Posts: 472
Location: Brampton, Ontario, Canada.
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| Posted: Thu Apr 23, 2009 3:22 am Post subject: |
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VH+, unless the rules have changed.
Danny, could you put the rules in a sticky please?
UR2 sky ER xy-wing, in some order.
I just checked and the rules may have changed?
| Quote: | daj95376
Joined: 23 Aug 2008
Posts: 863
PostPosted: Fri Feb 20, 2009 4:43 am Post subject: Set NNP_2 Puzzle 21 -- Advanced Reply with quote
Code:
+-----------------------+
| 4 . . | 1 . . | . . . |
| . 8 1 | 3 . 9 | . . 6 |
| . 6 3 | 4 8 . | . . . |
|-------+-------+-------|
| 6 2 8 | 7 3 . | 9 . . |
| . . 4 | 8 . . | 3 . . |
| . 9 . | . . 4 | 6 . . |
|-------+-------+-------|
| . . . | 2 4 8 | 5 . . |
| . . . | . . . | . 6 . |
| . 1 . | . . . | . . 2 |
+-----------------------+
Play this puzzle online at the Daily Sudoku site
===== ===== ===== ===== ===== ===== ===== ===== ===== Ratings are Accumulative
Basics: Naked/Hidden Single, Naked Pair/Triple, Locked Candidate 1/2
Basics+: Naked Quad, Hidden Pair/Triple/Quad
VH: BUG+1, UR Type 1, X-Wing, XY-Wing, XYZ-Wing
VH+: 2-String Kite, Empty Rectangle, Remote Pair, Skyscraper, Colors, UR Type 2, finned/Sashimi X-Wing
Advanced: Multiple Colors, Swordfish, M-Wing, W-Wing, XY-Chain
Extreme: Jellyfish, (but mostly) Chain |
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daj95376
Joined: 23 Aug 2008
Posts: 3854
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| Posted: Thu Apr 23, 2009 4:00 am Post subject: |
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| wapati wrote: | VH+, unless the rules have changed.
Danny, could you put the rules in a sticky please?
UR2 sky ER xy-wing, in some order.
I just checked and the rules may have changed?
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On April 13th, I added a new entry to the Sticky for this sub-forum. It contains an updated rating order.
| Code: | ===== ===== ===== ===== ===== ===== ===== ===== ===== Ratings are Accumulative
Basics: Naked/Hidden Single, Naked Pair/Triple, Locked Candidate 1/2
Basics+: Naked Quad, Hidden Pair/Triple/Quad
VH: BUG+1, UR Type 1, X-Wing, XY-Wing
VH+: 2-String Kite, Empty Rectangle, Remote Pair, Skyscraper, finned X-Wing, UR Type 2
Advanced: M-Wing, W-Wing, XYZ-Wing, XY-Chain, other URs
Extreme: Chain, Loop, SIN (Single Inference Network)
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wapati
Joined: 10 Jun 2008
Posts: 472
Location: Brampton, Ontario, Canada.
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| Posted: Thu Apr 23, 2009 4:43 am Post subject: |
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| OK, why is this an advanced? |
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storm_norm
Joined: 18 Oct 2007
Posts: 1741
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| Posted: Thu Apr 23, 2009 6:14 am Post subject: |
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Ted,
nice solution. I was in the middle of a 5 step process til I saw your post.
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tlanglet
Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
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| Posted: Thu Apr 23, 2009 12:47 pm Post subject: |
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Thanks Norm.
As previously mentioned, I had found several deletions that did not seem productive; for example, deleting a digit when all three of it's houses had numerous occurrences. Then I spotted the finned x-wing that made a real impact including creating a bivalue cell at r3c5. I had previously seen but not used the UR and realized that that move could make further progress; I was surprised when it broke the puzzle open. It is always fun to be lucky 
Ted |
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daj95376
Joined: 23 Aug 2008
Posts: 3854
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| Posted: Thu Apr 23, 2009 6:13 pm Post subject: |
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| wapati wrote: | | OK, why is this an advanced? |
My initial solution started off with 2x XYZ-Wing and everything after that is only VH+ or less in difficulty. I just checked for alternate solutions and realize that it can be solved with VH+ steps only. I'm not perfect!!! That's why solutions are often posted that shortcut mine.
Addendum: My solutions for this and many other puzzles were originally generated when XYZ-Wing was rated as VH+. I'm (erroneously) using these older solutions with my curent rating system. What I need to do is generate new solutions based on the current rating hierarchy. I'm sorry for any inconvenience this may have caused you! |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Wed Apr 29, 2009 11:56 pm Post subject: |
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| I used an XYZ-Wing (389), Type 2 UR (39), XY-Wing (498) and simple coloring (3) to finish it off. |
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wapati
Joined: 10 Jun 2008
Posts: 472
Location: Brampton, Ontario, Canada.
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| Posted: Thu Apr 30, 2009 4:15 am Post subject: |
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| daj95376 wrote: |
I'm sorry for any inconvenience this may have caused you! |
I was just worried that I had solved it incorrectly. 
Thanks for the puzzles! |
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