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Set H Puzzle 83 -- VH+AE

dailysudoku.com Forum Index -> Puzzles by daj

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daj95376

Joined: 23 Aug 2008
Posts: 3854

Posted: Tue Jan 13, 2009 11:50 pm Post subject: Set H Puzzle 83 -- VH+AE

Code:

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

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

Marty R.

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

Posted: Wed Jan 14, 2009 5:15 am Post subject:

Quote:

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

I certainly didn't use any Extreme steps.

Quote:

XY-Wing (234), ERs (3, 2, 3), Multi-coloring (4), Type 1 UR (67) and XY-Wing (142)

daj95376

Joined: 23 Aug 2008
Posts: 3854

Posted: Wed Jan 14, 2009 6:27 am Post subject:

Marty R. wrote:

I certainly didn't use any Extreme steps.

You might want to double-check Multiple Colors category.

storm_norm

Joined: 18 Oct 2007
Posts: 1741

Posted: Wed Jan 14, 2009 6:36 am Post subject:

Code:

.---------------------.---------------------.---------------------.
| 5 8 24 | 2349 34 2349 | 1 6 7 |
| 17 6 17 | 24 5 8 | 3 9 24 |
| 234 234 9 | 7 16 16 | 5 8 24 |
:---------------------+---------------------+---------------------:
| 1236 123 8 | 5 7 136 | 9 4 13 |
| 13467 13479 1347 | 8 2 13469 | 67 5 13 |
| 13467 13479 5 | 349 16 13469 | 67 2 8 |
:---------------------+---------------------+---------------------:
| 23 5 6 | 1 34 234 | 8 7 9 |
| 8 14 14 | 6 9 7 | 2 3 5 |
| 9 237 237 | 23 8 5 | 4 1 6 |
'---------------------'---------------------'---------------------'

step 1...multi-coloring {2}... r7c6 = r1c6 - r1c3 = r9c3; r9c4|r7c1 <> 2
some singles.
step 2... (4=1)r8c2 - (1=2)r4c2 - (2)r9c2 = (2)r9c3 - (2=4)r1c3; r8c3 <> 4.
singles.

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