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Free Press April 1, 2011

 
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keith



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

PostPosted: Fri Apr 01, 2011 3:17 pm    Post subject: Free Press April 1, 2011 Reply with quote

Not yet started. Seems to be on the BBDB side.
Code:
Puzzle: FP040111
+-------+-------+-------+
| . . 6 | . . . | . 5 . |
| 3 . . | . 2 . | . 1 6 |
| . . 8 | . . 6 | . . 7 |
+-------+-------+-------+
| 1 . 2 | . 6 . | . . . |
| . . . | 4 . 7 | . . . |
| . . . | . 8 . | 5 . . |
+-------+-------+-------+
| 9 . . | 6 5 . | 8 . . |
| 8 5 . | . 4 . | . . 9 |
| . 4 . | . . . | 7 . . |
+-------+-------+-------+

Play this puzzle online at the Daily Sudoku site
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Marty R.



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

PostPosted: Fri Apr 01, 2011 5:01 pm    Post subject: Reply with quote

W-Wing (13); r5c7, r6c46<>1
W-Wing (34), flightless; r1c8<>4
Remote Pairs (39); r9c4<>39
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keith



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

PostPosted: Fri Apr 01, 2011 6:22 pm    Post subject: Reply with quote

Mine was longer:
Type 4 UR on 4
Choice of XY-wings 13-6 or 1-36
Choice of XYZ-wings 34-9 or 2-34
SS 9
X-wing 9
BUG+1 or Choice of XY-wings 38-9 or -389.

Keith
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tlanglet



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

PostPosted: Fri Apr 01, 2011 9:39 pm    Post subject: Reply with quote

Another approach..........

#1: xy-wing(16-3) vertex (16)r5c7; r6c2<>3

#2: axy-wing (89-3) vertex(89)r2c4 with fin (9)r9c4; r9c5<>3
(9)r9c4-r4c4=r4c7-r23c7=r3c8-(9=3)r3c5;

Ted
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Asellus



Joined: 05 Jun 2007
Posts: 865
Location: Sonoma County, CA, USA

PostPosted: Sat Apr 02, 2011 3:01 am    Post subject: Reply with quote

After the 136 XY-Wing there is a 6-cell deadly pattern with an interesting grouped inference:
Code:
+--------+------------+---------------+
| 24 9 6 | 1   7  34  | 234   5    8  |
| 3  7 5 | 89  2  489 | 49    1    6  |
| 24 1 8 | 5   39 6   |@2349 @349  7  |
+--------+------------+---------------+
| 1  8 2 | 39  6  5   |@349   7   @34 |
| 5  3 9 | 4   1  7   | 6     8    2  |
| 7  6 4 | 2   8  39  | 5     39   1  |
+--------+------------+---------------+
| 9  2 7 | 6   5  1   | 8    @34  @34 |
| 8  5 3 | 7   4  2   | 1     6    9  |
| 6  4 1 | 389 39 389 | 7     2    5  |
+--------+------------+---------------+

(4=2)r3c1 - @DP[(2)r3c7=(9)r3c78|r4c7] - (9=4)r2c7; r3c78<>4
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daj95376



Joined: 23 Aug 2008
Posts: 3854

PostPosted: Sat Apr 02, 2011 4:07 am    Post subject: Reply with quote

Asellus wrote:
(4=2)r3c1 - @DP[(2)r3c7=(9)r3c78|r4c7] - (9=4)r2c7; r3c78<>4

Impressibe. I still fumble around in the dark when it comes to most DPs.
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tlanglet



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

PostPosted: Sat Apr 02, 2011 4:28 am    Post subject: Reply with quote

Asellus,

I like the move. I frequently look for the ADP patterns and had noticed the 6-cell AUR(34) after basics, but in this puzzle, the axy-wing was ready and attractive as the second step.

Ted
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storm_norm



Joined: 18 Oct 2007
Posts: 1741

PostPosted: Sat Apr 02, 2011 4:44 am    Post subject: Reply with quote

yet another approach.

http://www.youtube.com/watch?v=laTxBaNcVpY
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keith



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

PostPosted: Sun Apr 03, 2011 1:02 am    Post subject: Reply with quote

storm_norm wrote:
yet another approach.

http://www.youtube.com/watch?v=laTxBaNcVpY


Norm,

That is really creative!

Keith
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