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daj95376
Joined: 23 Aug 2008
Posts: 3854
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 Posted: Tue Apr 07, 2009 4:27 pm Post subject: Set XY_01 Puzzle 70 |
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Advanced (and probably difficult)
| Code: | +-----------------------+
| 5 . . | . 6 . | . . . |
| . . . | 5 4 . | . 2 . |
| . . . | 3 . . | 5 . . |
|-------+-------+-------|
| . 3 6 | 2 8 . | . . 1 |
| 8 1 . | 9 5 . | 2 . . |
| . . . | . . 6 | 8 . . |
|-------+-------+-------|
| . . 8 | . 2 4 | 1 . . |
| . 5 . | . . . | . 9 . |
| . . . | 6 . . | . . 4 |
+-----------------------+
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Play this puzzle online at the Daily Sudoku site
| Code: | r8 b8 Naked Pair <> 18 [r8c13]
c3 Naked Pair <> 47 [r1239c3]
c7b9 Locked Candidate 1 <> 7 [r12c7]
c2b1 Locked Candidate 2 <> 4 [r3c1]
c3b1 Locked Candidate 2 <> 9 [r23c1],[r123c2]
XY-Wing [r6c8]/[r5c9]+[r7c8] <> 6 [r5c8]
UR Type 1 [r18c46] <> 18 [r1c6] extraneous
turbot fish/ER c8b7 <> 6 [r3c1]
b1 Naked Quad <> 1239 [r2c1],[r13c2]
r3 Naked Quad <> 1289 [r3c28]
c3b1 Locked Candidate 1 <> 3 [r9c3]
c9b3 Locked Candidate 1 <> 7 [r6c9]
c28 X-Wing <> 6 [r7c1] -or-
r28 X-Wing <> 6 [r7c1]
XYZ-Wing [r8c1]/[r2c1]+[r8c3] <> 7 [r9c1]
W-Wing: 9/3 in r6c9,r7c1 connected by 3 in r67c8 => r6c1<>9
W-Wing: 2/7 in r6c1,r9c2 connected by 7 in r58c3 => r6c2,r9c1<>2
+-----------------------------------------------------+
| 5 47 239 | 8 6 29 | 349 1 379 |
| 67 8 139 | 5 4 19 | 369 2 379 |
| 12 46 129 | 3 7 129 | 5 46 8 |
|-----------------+-----------------+-----------------|
| 49 3 6 | 2 8 7 | 49 5 1 |
| 8 1 47 | 9 5 3 | 2 47 6 |
| 279 279 5 | 4 1 6 | 8 37 39 |
|-----------------+-----------------+-----------------|
| 39 69 8 | 7 2 4 | 1 36 5 |
| 467 5 47 | 1 3 8 | 67 9 2 |
| 123 27 12 | 6 9 5 | 37 8 4 |
+-----------------------------------------------------+
# 45 eliminations remain
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Last edited by daj95376 on Tue Apr 14, 2009 6:46 pm; edited 1 time in total |
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storm_norm
Joined: 18 Oct 2007
Posts: 1741
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| Posted: Wed Apr 08, 2009 1:54 am Post subject: |
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| Code: | .---------------------.---------------------.---------------------.
| 5 2478 1239 | 18 6 1289 | 349 1347 3789 |
| 1367 678 139 | 5 4 189 | 369 2 36789 |
| 126 2468 129 | 3 7 1289 | 5 146 689 |
:---------------------+---------------------+---------------------:
| 49 3 6 | 2 8 7 | 49 5 1 |
| 8 1 47 | 9 5 3 | 2 467 67 |
| 279 279 5 | 4 1 6 | 8 37 379 |
:---------------------+---------------------+---------------------:
| 369 69 8 | 7 2 4 | 1 36 5 |
| 467 5 47 | 18 3 18 | 67 9 2 |
| 1237 27 123 | 6 9 5 | 37 8 4 |
'---------------------'---------------------'---------------------' |
extended M-wing {3,7}... m-wing in red
(7=3)r6c8 - (3)r7c8 = (3-7)r9c7 = (7)r8c7 - (7)r8c3 = (7)r5c3; r5c89 <> 7
skyscraper (6)... r7c2 = r2c2 - r2c7 = r8c7; r8c1 and r7c8 are not 6 |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Thu Apr 09, 2009 5:02 am Post subject: |
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| XY-Wing, ER, UR and Medusa trap. |
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