Advanced solving techniques
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- A question on 3D medusa coloring elimination rules
by surbier » Thu Jul 01, 2010 5:42 am - 0 Replies
- 1663 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
- 2140 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
- 1842 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
- 65871 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
- 3364 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
- 3414 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
- 2512 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
- 2073 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
- 3833 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
- 1564 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
- 2353 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
- 3897 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
- 1713 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
- 1581 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
- 2342 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
- 1691 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
- 4310 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
- 2208 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
- 5137 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
- 6959 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
- 57374 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
- 1759 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
- 2436 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
- 2341 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
- 2538 Views
- Last post by surbier
Thu Jan 22, 2009 3:23 am
- POM: vulnerable triplet cells
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- Can someone simplify Sue de Cog for me?
by stumble » Thu Jan 15, 2009 4:38 am - 2 Replies
- 1892 Views
- Last post by aran
Thu Jan 15, 2009 10:49 am
- Can someone simplify Sue de Cog for me?
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- almost-locked ranges?
by Bob Hanson » Sat Jan 03, 2009 7:38 pm - 3 Replies
- 2014 Views
- Last post by David P Bird
Tue Jan 13, 2009 10:17 pm
- almost-locked ranges?
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- DIC Chains
by Gee » Mon Jan 05, 2009 2:58 pm - 1 Replies
- 1737 Views
- Last post by daj95376
Tue Jan 06, 2009 6:13 am
- DIC Chains
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- Almost Fishes patterns
1, 2, 3, 4by champagne » Sun Nov 30, 2008 11:44 pm - 49 Replies
- 11200 Views
- Last post by Allan Barker
Mon Jan 05, 2009 3:32 am
- Almost Fishes patterns
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- Great Monster Loops
1, 2, 3by Allan Barker » Sat Oct 25, 2008 6:03 am - 39 Replies
- 10404 Views
- Last post by Allan Barker
Sun Jan 04, 2009 2:12 am
- Great Monster Loops
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- XY & Extended XY-Wing/Complementary cells Example
by Bud » Mon Nov 24, 2008 2:41 pm - 10 Replies
- 2866 Views
- Last post by Luke
Fri Jan 02, 2009 7:30 pm
- XY & Extended XY-Wing/Complementary cells Example
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- Sashimi conjecture
by Bob Hanson » Fri Jan 02, 2009 3:06 am - 2 Replies
- 1810 Views
- Last post by Bob Hanson
Fri Jan 02, 2009 6:59 am
- Sashimi conjecture
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