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Free Press May 13, 2011

 
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keith



Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA

PostPosted: Fri May 13, 2011 11:35 am    Post subject: Free Press May 13, 2011 Reply with quote

Requires advanced moves.
Code:
Puzzle: FP051311
+-------+-------+-------+
| 8 2 . | . . 4 | . . . |
| . 9 . | . 8 . | . 1 6 |
| . . 5 | . . 7 | . . . |
+-------+-------+-------+
| . . . | . 5 . | . 3 . |
| 6 . . | 1 . 3 | . . 7 |
| . 1 . | . 9 . | . . . |
+-------+-------+-------+
| . . . | . . . | 6 . . |
| 4 5 . | . 3 . | . 2 . |
| 1 . . | . . . | . 5 8 |
+-------+-------+-------+

Play this puzzle online at the Daily Sudoku site

Keith
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keith



Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA

PostPosted: Fri May 13, 2011 12:56 pm    Post subject: Reply with quote

After basics:
Code:
+----------------+----------------+----------------+
| 8    2    1    | 39   6    4    | 379  79   5    |
| 7    9    4    | 23   8    5    | 23   1    6    |
| 3    6    5    | 29   1    7    | 2489 489  249  |
+----------------+----------------+----------------+
| 29   478  2789 | 468  5    268  | 1289 3    129  |
| 6    48   289  | 1    24   3    | 5    89   7    |
| 5    1    3    | 7    9    28   | 248  6    24   |
+----------------+----------------+----------------+
| 29   78   2789 | 5    247  1    | 6    479  3    |
| 4    5    679  | 68   3    689  | 179  2    19   |
| 1    3    2679 | 46   247  269  | 479  5    8    |
+----------------+----------------+----------------+

Quote:
A grouped skyscraper (finned X-wing) and an XY-wing did it for me.


Keith
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tlanglet



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

PostPosted: Fri May 13, 2011 2:13 pm    Post subject: Reply with quote

A fun puzzle with a one step solution............

Quote:
axy-wing (78-4) vertex (78)r7c2 with fin (2)r7c5; r5c5<>4
If fin is true: (2)r7c5-r9c56=r9c3-als(2=89)r5c38-(8=4)r5c2;

Ted
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peterj



Joined: 26 Mar 2010
Posts: 974
Location: London, UK

PostPosted: Fri May 13, 2011 5:05 pm    Post subject: Reply with quote

Here's an odd one! Smile
[Edit] Duh! Forget all that - if you read it - it's just two finned-xwings that force an 8...


Last edited by peterj on Fri May 13, 2011 9:42 pm; edited 1 time in total
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cgordon



Joined: 04 May 2007
Posts: 769
Location: ontario, canada

PostPosted: Fri May 13, 2011 5:08 pm    Post subject: Reply with quote

ERs remove the 9 from R7C8 and the 2 from R7C5 - and Bob's your uncle !
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Clement



Joined: 24 Apr 2006
Posts: 1110
Location: Dar es Salaam Tanzania

PostPosted: Fri May 13, 2011 5:14 pm    Post subject: Reply with quote

I used a kite in 2 originating in BOX 4; r7c5<>2 which opens an XY-Wing 47 78 48; r5c5<>4.
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daj95376



Joined: 23 Aug 2008
Posts: 3854

PostPosted: Fri May 13, 2011 5:35 pm    Post subject: Reply with quote

Code:
 r5c1    2-String Kite                   <> 2    r7c5
 r5c1    2-String Kite                   <> 9    r7c8
 exposes <47> Naked Pair ... and Singles follow
 +--------------------------------------------------------------+
 |  8     2     1     |  39    6     4     |  379   79    5     |
 |  7     9     4     |  23    8     5     |  23    1     6     |
 |  3     6     5     |  29    1     7     |  2489  489   249   |
 |--------------------+--------------------+--------------------|
 |  29    478   2789  |  468   5     268   |  1289  3     129   |
 |  6     48    289   |  1     24    3     |  5     89    7     |
 |  5     1     3     |  7     9     28    |  248   6     24    |
 |--------------------+--------------------+--------------------|
 |  29    78    2789  |  5     247   1     |  6     479   3     |
 |  4     5     679   |  68    3     689   |  179   2     19    |
 |  1     3     2679  |  46    247   269   |  479   5     8     |
 +--------------------------------------------------------------+
 # 65 eliminations remain
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Marty R.



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

PostPosted: Fri May 13, 2011 7:20 pm    Post subject: Reply with quote

I used Finned X-Wings on 9 and 2.

R89c3<>9
R9c3<>2
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