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daj95376
Joined: 23 Aug 2008 Posts: 3854
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Posted: Fri Oct 29, 2010 12:30 am Post subject: Puzzle 10/10/29: B XY |
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Code: | +-----------------------+
| . . 6 | . 8 . | . 4 1 |
| . . . | . . 1 | . . . |
| 7 . 1 | 4 . . | 6 . . |
|-------+-------+-------|
| . . 2 | . . 3 | 1 . . |
| 9 . . | . 1 . | . . . |
| . 8 . | 2 . 5 | . . 4 |
|-------+-------+-------|
| . . 9 | 3 . . | 7 . 2 |
| 3 . . | . . . | . 8 . |
| 2 . . | . . 8 | 4 . 3 |
+-----------------------+
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Play this puzzle online at the Daily Sudoku site |
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storm_norm
Joined: 18 Oct 2007 Posts: 1741
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Posted: Fri Oct 29, 2010 6:27 am Post subject: |
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Code: | +-----------+----------------------+-----------------+
| 5 239 6 | 79 8 279 | 239 4 1 |
| 4 239 8 | (56) 35(6) 1 | 2359 3579 579 |
| 7 239 1 | 4 35 29 | 6 359 8 |
+-----------+----------------------+-----------------+
| 6 45 2 | 8 479 3 | 1 579 579 |
| 9 45 3 | 67 1 467 | 8 2 567 |
| 1 8 7 | 2 69 5 | 39 369 4 |
+-----------+----------------------+-----------------+
| 8 16 9 | 3 (456) (46) | 7 156 2 |
| 3 167 4 | 1679(5) 2 679 | 59 8 569 |
| 2 167 5 | 1679 7-6 8 | 4 169 3 |
+-----------+----------------------+-----------------+ |
(46=5)r7c56 - (5)r8c4 = (5-6)r2c4 = (6)r2c5; r9c5 <> 6
this is also the als version of the gM-wing |
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peterj
Joined: 26 Mar 2010 Posts: 974 Location: London, UK
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Posted: Fri Oct 29, 2010 7:31 am Post subject: |
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An interesting variant on norm's move would be an ALS version of an xyz-wing
Notice that the ANP(35)r23c5 creates a strong link (5)r23c5=(6)r2c5. The xyz-wing is pivot (456)r7c5 with (46)r7c6. So r9c5<>6
Code: | xyz-wing(45-6) r7c5 ; r9c5<>6
(6)r7c5
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(4)r7c5 - (4=6)r7c6
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(5)r7c5 - ANP(35)[(5)r23c5=(6)r2c5]
or simply
(6=35)r23c5 - (5=46)r7c56 ; r9c5<>6 |
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yeoks
Joined: 16 May 2010 Posts: 33
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Posted: Sat Oct 30, 2010 3:48 am Post subject: |
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W-wing (67); r4c5, r89c4 <>7
UR Type 4 (16); r79c8<>6 |
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tlanglet
Joined: 17 Oct 2007 Posts: 2468 Location: Northern California Foothills
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Posted: Mon Nov 08, 2010 1:53 pm Post subject: |
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AXY-wing 46-7 vertex (46)r7c6, pincers (47)r5c6 & (67)r9c5 with fin (6)r5c6
If xy-wing is true; r4c5<>7
If fin is true (6)r5c6-(6=7)r5c4; r4c5<>7
Ted |
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