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Puzzle NR_021

dailysudoku.com Forum Index -> Puzzles by daj

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daj95376

Joined: 23 Aug 2008
Posts: 3854

Posted: Sun May 17, 2009 6:23 am Post subject: Puzzle NR_021

Kites?

Code:

+-----------------------+
| . 5 4 | 7 3 . | 6 . 2 |
| 9 . . | . . . | . . 1 |
| 6 . . | . . . | 3 . 7 |
|-------+-------+-------|
| 5 . . | 9 . . | . 6 . |
| 7 . . | . 6 . | 2 . . |
| . . . | . . 5 | . . . |
|-------+-------+-------|
| 4 . 7 | . 1 . | 5 3 6 |
| . . . | 3 . . | 7 . . |
| 3 9 5 | . . . | 1 . 8 |
+-----------------------+

Play this puzzle online at the Daily Sudoku site

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Code:

oaxen version
+-----------------------+
| . 5 4 | 7 3 . | 6 9 2 |
| 9 7 3 | . . . | 4 . 1 |
| 6 . . | . 9 . | 3 . 7 |
|-------+-------+-------|
| 5 . . | 9 . . | 8 6 . |
| 7 . 9 | . 6 . | 2 1 5 |
| . . . | . . 5 | 9 7 . |
|-------+-------+-------|
| 4 . 7 | . 1 9 | 5 3 6 |
| . . . | 3 5 . | 7 . 9 |
| 3 9 5 | . . . | 1 . 8 |
+-----------------------+

Play this puzzle online at the Daily Sudoku site

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storm_norm

Joined: 18 Oct 2007
Posts: 1741

Posted: Sun May 17, 2009 8:00 am Post subject:

Code:

.------------------------.------------------------.------------------------.
| 18 5 4 | 7 3 18 | 6 9 2 |
| 9 7 3 | 2568 28 268 | 4 58 1 |
| 6 128 128 | 1458 9 148 | 3 58 7 |
:------------------------+------------------------+------------------------:
| 5 1234 12 | 9 247 12347 | 8 6 34 |
| 7 348 9 | 48 6 348 | 2 1 5 |
| 128 123468 1268 | 1248 248 5 | 9 7 34 |
:------------------------+------------------------+------------------------:
| 4 28 7 | 28 1 9 | 5 3 6 |
| 128 1268 1268 | 3 5 248 | 7 24 9 |
| 3 9 5 | 246 247 2467 | 1 24 8 |
'------------------------'------------------------'------------------------'

yep, lots of kites
but this puzzle is solved with one UR type 3 {3,4} r46c29
removes 8 from r5c2

Marty R.

Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA

Posted: Fri May 22, 2009 12:31 am Post subject:

Very nice UR Norm. Easy enough to see after the fact, but I always forget to look for those things. Using Norm's grid, an ER on 1 removes the 1 from r6c1.

Code:

+-----------------+----------------+---------+
| 18 5 4 | 7 3 18 | 6 9 2 |
| 9 7 3 | 2568 28 268 | 4 58 1 |
| 6 128 128 | 1458 9 148 | 3 58 7 |
+-----------------+----------------+---------+
| 5 1234 12 | 9 247 12347 | 8 6 34 |
| 7 348 9 | 48 6 348 | 2 1 5 |
| 28 123468 1268 | 1248 248 5 | 9 7 34 |
+-----------------+----------------+---------+
| 4 28 7 | 28 1 9 | 5 3 6 |
| 128 1268 1268 | 3 5 248 | 7 24 9 |
| 3 9 5 | 246 247 2467 | 1 24 8 |
+-----------------+----------------+---------+

Play this puzzle online at the Daily Sudoku site

Now we have one of those mixed W-Wings. In row 1, if c1 is 8, then r6c1 is 2, if r1c6 is 8, then r7c2 is 2 and those pincers open up the puzzle for an X-Wing and Type 1 UR on 34. Thanks to Norm for that technique, it has come in very handy at times.

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