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Puzzle NR_070

dailysudoku.com Forum Index -> Puzzles by daj

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daj95376

Joined: 23 Aug 2008
Posts: 3854

Posted: Sat Oct 17, 2009 5:35 am Post subject: Puzzle NR_070

Code:

NR puzzles can be solved using these techniques:

Basics: Naked/Hidden Single, Naked Pair/Triple, Locked Candidates 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,
XYZ-Wing, finned X-Wing, UR Type 2/4

Code:

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

Play this puzzle online at the Daily Sudoku site

tlanglet

Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills

Posted: Sat Oct 17, 2009 3:57 pm Post subject:

Danny, it is great to work your puzzles again Exclamation

This was a typical NR style puzzle requiring seven steps for me to complete; I have no idea what may have been unnecessary.

Quote:

ER2 with hinge in box4 and strong link in row8,
coloring or kite on 4,
Sashimi swordfish 2 in r148c179 to delete 2 in r7c1,
xy-wing -248 with vertex 48 in r8c9,
xyz-wing 469 with vertex in r7c4,
x-wing9 in r47c69, and finally
BUG+1 sets r9c4=9

What a return! A Bend But Don't Break (BBDB) Exclamation

Ted

daj95376

Joined: 23 Aug 2008
Posts: 3854

Posted: Sat Oct 17, 2009 5:47 pm Post subject:

tlanglet wrote:

Danny, it is great to work your puzzles again Exclamation

This was a typical NR style puzzle requiring seven steps for me to complete; I have no idea what may have been unnecessary.

What a return! A Bend But Don't Break (BBDB) Exclamation

Hello Ted,

It's nice to be back and I'm glad that you are enjoying the BBDB/NR puzzles. I have several more waiting in the wing.

I don't know the shortest number of steps, but my solver used several fun steps that I suspect you encountered as well.

Regards, Danny

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