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Puzzle NR_038

dailysudoku.com Forum Index -> Puzzles by daj

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daj95376

Joined: 23 Aug 2008
Posts: 3854

Posted: Fri Jun 12, 2009 4:14 pm Post subject: Puzzle NR_038

Code:

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

Play this puzzle online at the Daily Sudoku site

Code:

r9 b8 Locked Pair <> 34 [r9c17]
c9 Naked Pair <> 47 [r27c9]
r5 b6 Locked Candidate 1 <> 4 [r5c23]

r69 X-Wing <> 7 [r2347c1],[r37c7]

r38c7 Skyscraper <> 2 [r2c2],[r7c1]

r7 b3 Empty Rectangle <> 7 [r1c3]

r4 b5 Locked Candidate 2 <> 7 [r5c4]

XY-Wing [r9c1]/[r4c1]+[r7c3] <> 2 [r5c3]

c39 X-Wing <> 2 [r2c1],[r7c7]

Last edited by daj95376 on Fri Jun 26, 2009 8:58 pm; edited 1 time in total

tlanglet

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

Posted: Sun Jun 14, 2009 2:46 pm Post subject:

I may not have needed them all to complete the puzzle, but my five steps were:

Quote:

skyscraper 2 in r38c7
x-wing 7 in r69c17,
xy-wing 127 with pivot 17 in r9c1,
w-wing 17 in r5c3 & r9c7 and strong link 7 in row6 with 1 in r9c7 transported to r8c2 via r9c1,
x-wing 2 in r27c27.

Ted

Marty R.

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

Posted: Mon Jun 15, 2009 5:12 pm Post subject:

XYZ-Wing (147), four ERs and simple coloring on 2.

storm_norm

Joined: 18 Oct 2007
Posts: 1741

Posted: Mon Jun 15, 2009 5:14 pm Post subject:

Code:

.------------------------.------------------------.------------------------.
| 6 1457 147 | 1457 2 9 | 8 3 47 |
| 123457 12457 1247 | 13457 1347 8 | 9 1467 26 |
| 12347 9 8 | 1347 1347 6 | 1247 147 5 |
:------------------------+------------------------+------------------------:
| 1247 1247 6 | 127 17 5 | 3 9 8 |
| 9 1257 127 | 127 8 3 | 6 457 47 |
| 57 8 3 | 9 6 4 | 57 2 1 |
:------------------------+------------------------+------------------------:
| 247 3 247 | 8 9 1 | 2457 4567 26 |
| 8 124 9 | 6 5 7 | 124 14 3 |
| 17 6 5 | 34 34 2 | 17 8 9 |
'------------------------'------------------------'------------------------'

1...ER 2
2... (2=7)r7c3 - (7=1)r9c1 - (1=2)r4c1 - (2)r3c1 = (2)r3c7; r7c7 <> 2

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