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daj95376
Joined: 23 Aug 2008
Posts: 3854
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 Posted: Sun Dec 20, 2009 3:07 pm Post subject: Puzzle NR 09/12/20 (B) |
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| Code: | +-----------------------+
| . 9 1 | 8 . . | . . . |
| 5 8 . | 7 . 9 | 1 . 6 |
| 6 . . | 1 . . | . . . |
|-------+-------+-------|
| 8 1 5 | 6 4 . | . 9 . |
| . . . | 9 1 . | . 8 . |
| . 3 . | . . 8 | . . . |
|-------+-------+-------|
| . 5 . | . . . | 9 . . |
| . . . | 5 9 . | . 3 2 |
| . 2 . | . . . | . 6 1 |
+-----------------------+
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Play this puzzle online at the Daily Sudoku site |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Tue Dec 22, 2009 4:44 pm Post subject: |
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| I was hoping to see some comments since I've done it three times and ended with an invalidity each time. Now going for four. |
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arkietech
Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA
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| Posted: Tue Dec 22, 2009 5:04 pm Post subject: |
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I needed | Quote: | w-wing74
kite 4
w-wing 24 |
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daj95376
Joined: 23 Aug 2008
Posts: 3854
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| Posted: Tue Dec 22, 2009 5:18 pm Post subject: |
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| Marty R. wrote: | | I was hoping to see some comments since I've done it three times and ended with an invalidity each time. Now going for four. |
Always glad to help if someone is stuck on a puzzle.
| Code: | after basics
+--------------------------------------------------------------+
| 247 9 1 | 8 256 246 | 347 2457 34 |
| 5 8 234 | 7 23 9 | 1 24 6 |
| 6 47 2347 | 1 235 24 | 8 2457 9 |
|--------------------+--------------------+--------------------|
| 8 1 5 | 6 4 3 | 2 9 7 |
| 247 467 2467 | 9 1 5 | 346 8 34 |
| 49 3 469 | 2 7 8 | 46 1 5 |
|--------------------+--------------------+--------------------|
| 1347 5 467 | 34 26 126 | 9 47 8 |
| 147 467 8 | 5 9 16 | 47 3 2 |
| 349 2 49 | 34 8 7 | 5 6 1 |
+--------------------------------------------------------------+
# 60 eliminations remain
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| Step 1 (extraneous) wrote: | 2-String Kite in r2c9 => r5c3<>4.
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| Step 2 (extraneous) wrote: | <34> UR Type 4 in r15c79 => r15c7<>4.
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| Step 3 wrote: | <34> UR Type 4 in r79c14 => r79c1<>4.
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| Step 4 wrote: | <49> UR Type 6 in r69c13 => r6c3,r9c1<>9.
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| Step 5 wrote: | X-Wing r27\c38 => r36c3,r13c8<>4.
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Similar approach for Puzzle NR 09/12/20 (A). |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Tue Dec 22, 2009 5:29 pm Post subject: |
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I rarely find out what I did wrong on a puzzle when I end up with an invalid result. However, this was the exception. All three times I made an invalid elimination from an XY-Wing.
XY (243)
Type 4 UR (34)
Type 4 UR (34) (not a typo, two different URs on 34)
Type 6 UR (49)
W-Wing (47)
Above with pincer transport
ER (4)
Sorry to have made extra work for you Danny. |
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daj95376
Joined: 23 Aug 2008
Posts: 3854
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| Posted: Tue Dec 22, 2009 5:47 pm Post subject: |
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| Marty R. wrote: | | Sorry to have made extra work for you Danny. |
No apology needed Marty!!! I'm just glad that you found a solution after all of your effort!
Regards, Danny |
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