Advanced solving techniques
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- Hidden rectangles: old hat revisited
by StrmCkr » Tue Oct 19, 2010 10:07 am - 2 Replies
- 619 Views
- Last post by StrmCkr
Wed Oct 20, 2010 5:45 am
- Hidden rectangles: old hat revisited
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- Solution to Ocean's #4/gold
by gurth » Fri Nov 17, 2006 9:13 am - 14 Replies
- 4075 Views
- Last post by gurth
Sun Sep 12, 2010 3:17 pm
- Solution to Ocean's #4/gold
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- ALS-xz with set overlap
1, 2by ronk » Sun Sep 05, 2010 2:37 pm - 29 Replies
- 1036 Views
- Last post by JasonLion-Admin
Sun Sep 05, 2010 3:56 pm
- ALS-xz with set overlap
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- Advanced ALS Chains -A Tutorial ASI#3b
1, 2by DonM » Sun Sep 05, 2010 3:10 pm - 15 Replies
- 2246 Views
- Last post by JasonLion-Admin
Sun Sep 05, 2010 3:54 pm
- Advanced ALS Chains -A Tutorial ASI#3b
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- Two definitions of W-Wing, terminology question
1, 2by JasonLion » Sun Nov 09, 2008 3:44 pm - 15 Replies
- 20104 Views
- Last post by ronk
Wed Aug 04, 2010 8:35 pm
- Two definitions of W-Wing, terminology question
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- An alternative way to solve the hard 17 clue
1, 2by eleven » Mon May 24, 2010 11:25 pm - 19 Replies
- 1181 Views
- Last post by SteveK
Sat Jul 31, 2010 8:18 am
- An alternative way to solve the hard 17 clue
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- A question on 3D medusa coloring elimination rules
by surbier » Thu Jul 01, 2010 5:42 am - 0 Replies
- 688 Views
- Last post by surbier
Thu Jul 01, 2010 5:42 am
- A question on 3D medusa coloring elimination rules
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- non-ALS vwxyz-wing
by surbier » Wed May 26, 2010 6:20 pm - 6 Replies
- 738 Views
- Last post by surbier
Wed Jun 23, 2010 11:40 am
- non-ALS vwxyz-wing
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- Ultimate Lizard Guide
by tarek » Sun May 23, 2010 12:53 am - 2 Replies
- 714 Views
- Last post by tarek
Sun May 23, 2010 12:55 am
- Ultimate Lizard Guide
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- Challenge: New set of 11 'Unsolvables'
1 ... 5, 6, 7by AndrewStuart » Wed Sep 13, 2006 4:50 pm - 103 Replies
- 57134 Views
- Last post by BrianS
Sun May 17, 2009 10:47 am
- Challenge: New set of 11 'Unsolvables'
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- Bi-directional cycle + Unique Rectangle Typ 2
1, 2by claudiarabia » Mon May 04, 2009 8:04 pm - 16 Replies
- 1404 Views
- Last post by DonM
Tue May 05, 2009 7:27 pm
- Bi-directional cycle + Unique Rectangle Typ 2
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- missing deduction for xyt chains
1, 2by surbier » Sun May 03, 2009 4:46 pm - 17 Replies
- 1350 Views
- Last post by DonM
Mon May 04, 2009 10:33 pm
- missing deduction for xyt chains
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- BUG1 or BUG4 or not at all?
by claudiarabia » Thu Aug 21, 2008 7:56 am - 7 Replies
- 1405 Views
- Last post by daj95376
Sat May 02, 2009 4:52 pm
- BUG1 or BUG4 or not at all?
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- TNU
by Neunmalneun » Tue Mar 31, 2009 5:30 pm - 10 Replies
- 915 Views
- Last post by eleven
Wed Apr 01, 2009 9:05 pm
- TNU
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- Expanded XY-Chain Patterns
1, 2by Bud » Thu Mar 19, 2009 11:58 pm - 17 Replies
- 1938 Views
- Last post by Bud
Mon Mar 23, 2009 7:21 pm
- Expanded XY-Chain Patterns
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- UR Type 5 Example
by hobiwan » Mon Mar 23, 2009 12:32 am - 0 Replies
- 677 Views
- Last post by hobiwan
Mon Mar 23, 2009 12:32 am
- UR Type 5 Example
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- Obscured: Unique Rectangle:
by StrmCkr » Mon Mar 16, 2009 5:46 am - 12 Replies
- 1297 Views
- Last post by StrmCkr
Tue Mar 17, 2009 12:21 am
- Obscured: Unique Rectangle:
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- Did I do this right?
1, 2by EnderGT » Wed Mar 11, 2009 4:27 am - 20 Replies
- 2016 Views
- Last post by ronk
Sun Mar 15, 2009 11:27 pm
- Did I do this right?
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- 2 ER-Linked ALS-XZ Example
by Bud » Sun Mar 15, 2009 12:56 am - 1 Replies
- 694 Views
- Last post by aran
Sun Mar 15, 2009 4:18 am
- 2 ER-Linked ALS-XZ Example
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- GUG or GLOG or what ?
by sarker306 » Fri Mar 13, 2009 5:51 pm - 1 Replies
- 639 Views
- Last post by ronk
Fri Mar 13, 2009 11:42 pm
- GUG or GLOG or what ?
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- Sky - Wings (biplane) { Edit: rediscoverd (W-wing)}
by StrmCkr » Wed Feb 25, 2009 5:44 pm - 9 Replies
- 1295 Views
- Last post by StrmCkr
Mon Mar 09, 2009 6:11 pm
- Sky - Wings (biplane) { Edit: rediscoverd (W-wing)}
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- An ER-Linked XY-Wing Example
by Bud » Sat Mar 07, 2009 6:58 am - 1 Replies
- 770 Views
- Last post by Luke
Sat Mar 07, 2009 11:00 am
- An ER-Linked XY-Wing Example
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- Asymmetric Sudoku
by yugal » Wed Mar 04, 2009 2:10 am - 3 Replies
- 2174 Views
- Last post by m_b_metcalf
Wed Mar 04, 2009 3:13 pm
- Asymmetric Sudoku
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- y-chain/unique loop combination
by RobO » Sun Mar 01, 2009 5:29 pm - 13 Replies
- 1075 Views
- Last post by ronk
Mon Mar 02, 2009 9:52 am
- y-chain/unique loop combination
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- Nice Loop Question (again)
1, 2by hobiwan » Sat Dec 13, 2008 3:13 am - 25 Replies
- 2916 Views
- Last post by hobiwan
Mon Feb 23, 2009 5:30 pm
- Nice Loop Question (again)
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- More Monster Loops, Structure and Symmetry
1, 2by Allan Barker » Sat Jan 17, 2009 2:15 am - 21 Replies
- 3668 Views
- Last post by ronk
Sun Feb 22, 2009 11:29 pm
- More Monster Loops, Structure and Symmetry
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- Two-Sector Disjoint Subsets
1, 2, 3by Sue De Coq » Tue Oct 25, 2005 12:44 am - 38 Replies
- 48539 Views
- Last post by ronk
Mon Feb 16, 2009 7:27 am
- Two-Sector Disjoint Subsets
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- Double value X-Wing
by RobReeve » Mon Feb 16, 2009 3:20 am - 2 Replies
- 810 Views
- Last post by RobReeve
Mon Feb 16, 2009 7:04 am
- Double value X-Wing
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- Solving with Almost Sue De Coq: Extreme #122 (ASI#2d)
by DonM » Sun Jan 25, 2009 2:08 pm - 2 Replies
- 1323 Views
- Last post by DonM
Mon Jan 26, 2009 5:16 am
- Solving with Almost Sue De Coq: Extreme #122 (ASI#2d)
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- Solving with Almost Sue De Coq: Extreme #118 (ASI#2c)
by DonM » Sun Jan 25, 2009 1:19 pm - 2 Replies
- 1074 Views
- Last post by DonM
Mon Jan 26, 2009 4:00 am
- Solving with Almost Sue De Coq: Extreme #118 (ASI#2c)
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- POM: vulnerable triplet cells
by surbier » Fri Jan 09, 2009 8:22 am - 4 Replies
- 1529 Views
- Last post by surbier
Thu Jan 22, 2009 3:23 am
- POM: vulnerable triplet cells
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