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keith
Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
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 Posted: Sat Dec 12, 2009 4:52 pm Post subject: Free Press Dec 11, 2009 |
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Not yet done: | Code: | Puzzle: FP121109
+-------+-------+-------+
| . . . | . 1 2 | 8 . . |
| . 2 . | . 6 5 | . 4 . |
| . . . | 9 . . | . . 7 |
+-------+-------+-------+
| . . 9 | 6 . . | . . . |
| . 4 . | . . . | . 1 . |
| 2 . . | . . 1 | 3 . . |
+-------+-------+-------+
| 1 . . | . . 7 | . . . |
| . 7 . | . 4 . | . 2 . |
| . . 5 | 8 . . | . . 9 |
+-------+-------+-------+ |
Edit: Now done.
| Quote: | | There are two cells 38 that form a W-wing that takes out 3, revealing a W-wing in the same cells that takes out 8. An XYZ, SS and ER are not needed. |
Keith |
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arkietech
Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA
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| Posted: Sun Dec 13, 2009 2:17 am Post subject: |
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| I have added this to my "neat" puzzle collection. A very good puzzle! I found the same solution as Keith. |
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keith
Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
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| Posted: Sun Dec 13, 2009 2:24 am Post subject: |
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| arkietech wrote: | | I have added this to my "neat" puzzle collection. A very good puzzle! I found the same solution as Keith. |
Yes, it is too bad the quality of these Friday Freep puzzles is so variable.
For those who recall a thread from last week, you have here two overlaid W-wings that make a remote pair.
Keith |
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tlanglet
Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
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| Posted: Mon Dec 14, 2009 3:25 pm Post subject: |
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I started this puzzle looking for single digit patterns and found two, the second was unusual. (Later I realized neither of these two steps were needed to complete the puzzle.)
Kraken x-wing 8 in r28c13 with Kraken fin in r8c9.
If the x-wing is true then r45c1, r56c3<>8,
If Kraken find is true then (8)r8c9 - (8)r6c9 = (8)r6c23; r45c1,r5c3<>8,
Next I found a x-wing 3 with two(2) separate fins as noted in the code below.
| Code: | *--------------------------------------------------------------------*
| 35679 3569 4 | 37 1 2 | 8 356 35 |
| 378 2 378 | 37 6 5 | 9 4 1 |
|#356 @356 1 | 9 8 4 | 2 @356 7 |
|----------------------+----------------------+----------------------|
| 357 1 9 | 6 357 38 | 4 58 2 |
| 356 4 36 | 2 359 389 | 7 1 568 |
| 2 568 678 | 4 57 1 | 3 9 56 |
|----------------------+----------------------+----------------------|
| 1 @389 2 | 5 *39 7 | 6 @38 4 |
| 3689 7 368 | 1 4 369 | 5 2 38 |
| 4 36 5 | 8 2 36 | 1 7 9 |
*--------------------------------------------------------------------* |
The basic x-wing is in r37c28 marked @. The first fin is in r3c1 marked #. A Kraken fin is in r7c5 marked *.
If the x-wing is true then r1c28, r9c2<>3,
If the first fin is true then (3)r3c1 - (3)r1c2,
If the Kraken fin is true then (3)r7c5 - (3)r9c6 = (3)r9c2; r1c2<>3.
Thus, all conditions give r1c2<>3.
To complete the puzzle I used a w-wing 38 in r4c6 & r7c8 with a strong link on 3 in col5.
Ted |
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