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Set I Puzzle 16

dailysudoku.com Forum Index -> Puzzles by daj

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daj95376

Joined: 23 Aug 2008
Posts: 3854

Posted: Fri Jan 16, 2009 1:46 am Post subject: Set I Puzzle 16

Last puzzle of the set. Hopefully it'll be enjoyable and a challenge.

Code:

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

Play this puzzle online at the Daily Sudoku site

===== ===== ===== ===== ===== ===== ===== ===== ===== ===== ===== ===== =====

Can be solved using steps from ...

Basics: Naked/Hidden Single, Naked Pair/Triple, Locked Candidate 1/2

Basics+: Naked Quad, Hidden Pair/Triple/Quad

VH: BUG+1, Remote Pair, UR Type 1, X-Wing, XY-Wing

Advanced: 2-String Kite, Empty Rectangle, Skyscraper, UR Type 2, XYZ-Wing

Extreme: finned X-Wing, Multiple Colors, M-Wing, W-Wing, XY-Chain

VH+AE: multi-step VH plus one Advanced and/or one Extreme step.

Extreme+: Swordfish, Jellyfish, (but mostly) Chain

Kdelle

Joined: 20 Mar 2008
Posts: 59
Location: Hudson, NH

Posted: Sat Jan 17, 2009 12:31 am Post subject:

Danny,

Help! I'm here:

Code:

+--------------+-------------+------------+
| 7 1 49 | 5 468 3 | 689 2 489 |
| 5 8 249 | 24 46 1 | 469 7 3 |
| 34 234 6 | 247 478 9 | 5 1 48 |
+--------------+-------------+------------+
| 8 5 247 | 47 9 247 | 1 3 6 |
| 69 69 247 | 3 1 247 | 24 8 5 |
| 1 24 3 | 8 5 6 | 249 49 7 |
+--------------+-------------+------------+
| 346 3467 1 | 9 47 478 | 348 5 2 |
| 2 49 5 | 1 3 48 | 7 6 489 |
| 349 3479 8 | 6 2 5 | 349 49 1 |
+--------------+-------------+------------+

Play this puzzle online at the Daily Sudoku site

Can I get a hint please????

Thanks.

Kathy

daj95376

Joined: 23 Aug 2008
Posts: 3854

Posted: Sat Jan 17, 2009 12:54 am Post subject:

Kdelle wrote:

Can I get a hint please????

Absolutely!!!

The last two steps are both Advanced in my ratings. The first step exposes the second. That said ...

Hint 1 wrote:

XYZ-Wing ==> [r9c1]/[r3c1]+[r8c2]

Hint 2 wrote:

Empty Rectangle c8b7

Marty R.

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

Posted: Sat Jan 17, 2009 1:48 am Post subject:

I used two XYZ-Wings, a W-Wing and a UR, but it took an ER to open things up and finish.

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