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Puzzle 10/09/11: B

 
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daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Sat Sep 11, 2010 3:39 am    Post subject: Puzzle 10/09/11: B Reply with quote
Code:
 +-----------------------+
 | 8 . . | 4 9 . | . 5 . |
 | . 9 4 | 6 5 7 | . . 8 |
 | . 5 . | 8 3 . | . . . |
 |-------+-------+-------|
 | 3 8 6 | 1 4 5 | . . . |
 | 2 1 9 | 3 . . | 5 4 6 |
 | . 7 . | 9 . 6 | 8 3 1 |
 |-------+-------+-------|
 | . . . | . 8 9 | . . 3 |
 | 9 . . | . 1 3 | . 8 . |
 | . 3 . | . 6 4 | 9 . . |
 +-----------------------+

Play this puzzle online at the Daily Sudoku site


Rating wrote:
XY
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JC Van Hay



Joined: 13 Jun 2010
Posts: 494
Location: Charleroi, Belgium
PostPosted: Sat Sep 11, 2010 7:46 am    Post subject: Reply with quote
Quote:
Putting aside the X Wing (1)R18 and colouring bivalues in Band 1 -> Medusa Wrap : (2a6A)R1C2 -> r49c9=2A : => r1c2<>6

Interpretation : 5-Cells Discontinuous Nice Loop : (29)C9 (96)R3C8 (67)R3C1 (75)R9C1 (52)R9C9 loop : (2-9)r4c9=(2)r9c9
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peterj



Joined: 26 Mar 2010
Posts: 974
Location: London, UK
PostPosted: Sat Sep 11, 2010 7:58 am    Post subject: Reply with quote
Workman-like xy-chain...
Quote:
xy-chain (2=5)r9c9 - (5=7)r9c1 - (7=6)r3c1 - (6=9)r3c8 - (9=7)r4c8 - (7=2)r4c7 ; r4c9<>2, r78c7<>2
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tlanglet



Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
PostPosted: Sun Sep 12, 2010 3:45 am    Post subject: Reply with quote
A third variation is an "almost"

Quote:
AXY-wing 2-57 vertex (27)r8c3, pincers (25)r8c9 & (57)r9c1 with fin (4)r8c9
If xy-wing is true: r9c9<>5
If fin is true: (4)r8c9-r78c7=(4-1)r3c7=(1-6)r1c7=r1c2-(6=7)r3c1-(7=5)r9c1; r9c9<>5

Ted
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Mon Sep 13, 2010 1:01 am    Post subject: Reply with quote
An XY-Wing (572) and X-Wing (6) didn't get me very far, so I reluctantly went to my Medusa crutch and a wrap did it.
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