Advanced solving techniques
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- Colouring/Swordfish.
by Del » Sun Dec 04, 2005 3:32 pm - 2 Replies
- 2305 Views
- Last post by Del
Mon Dec 05, 2005 7:20 pm
- Colouring/Swordfish.
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- Strong Nice Loop: a new concept
by Carcul » Fri Dec 02, 2005 12:50 am - 12 Replies
- 10138 Views
- Last post by ronk
Mon Dec 05, 2005 12:23 pm
- Strong Nice Loop: a new concept
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- what are "swordfish" and "x-wing"
by bluemoose » Sun Dec 04, 2005 4:12 am - 2 Replies
- 2673 Views
- Last post by ExpertNovice
Mon Dec 05, 2005 3:02 am
- what are "swordfish" and "x-wing"
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- Need someone to solve
by the4cruisers » Sun Dec 04, 2005 2:53 am - 3 Replies
- 2000 Views
- Last post by the4cruisers
Mon Dec 05, 2005 12:23 am
- Need someone to solve
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- a somewhat useful trick
by bluemoose » Sat Dec 03, 2005 3:29 am - 3 Replies
- 2478 Views
- Last post by r.e.s.
Sat Dec 03, 2005 11:15 pm
- a somewhat useful trick
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- trial and error / forcing chains
by vvill » Fri Dec 02, 2005 1:53 am - 5 Replies
- 8078 Views
- Last post by Shazbot
Fri Dec 02, 2005 10:37 pm
- trial and error / forcing chains
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- Help! Stuck at two sudoku!
1, 2by lthjason123 » Sun Nov 27, 2005 2:11 am - 22 Replies
- 7971 Views
- Last post by Cec
Fri Dec 02, 2005 9:12 am
- Help! Stuck at two sudoku!
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- A Simple Direct Proof For Forcing Chains Using Sets
by Myth Jellies » Tue Nov 29, 2005 9:58 am - 3 Replies
- 2710 Views
- Last post by r.e.s.
Fri Dec 02, 2005 4:26 am
- A Simple Direct Proof For Forcing Chains Using Sets
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- help with hard puzzle from papacom
by adrianzr » Thu Dec 01, 2005 2:57 am - 9 Replies
- 3765 Views
- Last post by adrianzr
Fri Dec 02, 2005 2:36 am
- help with hard puzzle from papacom
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- Another Way to Represent Candidates (2)
by Kibitzer » Mon Nov 21, 2005 8:12 pm - 13 Replies
- 6962 Views
- Last post by Kibitzer
Thu Dec 01, 2005 11:43 am
- Another Way to Represent Candidates (2)
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- Not almost locked sets
by bennys » Thu Dec 01, 2005 8:58 am - 0 Replies
- 1563 Views
- Last post by bennys
Thu Dec 01, 2005 8:58 am
- Not almost locked sets
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- to rubylips
by bennys » Tue Nov 29, 2005 6:03 am - 3 Replies
- 2213 Views
- Last post by rubylips
Wed Nov 30, 2005 11:50 am
- to rubylips
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- I got all solutions
by safeheaven » Mon Nov 28, 2005 8:42 am - 3 Replies
- 2849 Views
- Last post by nj3h
Mon Nov 28, 2005 10:32 pm
- I got all solutions
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- Angus advanced
by Wolfgang » Mon Nov 28, 2005 5:36 pm - 2 Replies
- 2412 Views
- Last post by Wolfgang
Mon Nov 28, 2005 8:29 pm
- Angus advanced
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- how to spot this pattern?
1, 2by MikeF » Sat Nov 26, 2005 3:27 am - 22 Replies
- 13997 Views
- Last post by rubylips
Mon Nov 28, 2005 3:59 pm
- how to spot this pattern?
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- Help Snoopy find the solution to this diabolical Puzzle
by Sudoku Snoopy » Mon Nov 28, 2005 12:22 pm - 10 Replies
- 6517 Views
- Last post by Sudoku Snoopy
Mon Nov 28, 2005 3:46 pm
- Help Snoopy find the solution to this diabolical Puzzle
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- Rule of Corners
by bcbhatta » Sat Nov 26, 2005 3:31 pm - 2 Replies
- 4983 Views
- Last post by bcbhatta
Sat Nov 26, 2005 5:59 pm
- Rule of Corners
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- More offbeat fun with uniqueness patterns
by Nick67 » Sat Nov 26, 2005 3:34 am - 7 Replies
- 3793 Views
- Last post by Myth Jellies
Sat Nov 26, 2005 10:57 am
- More offbeat fun with uniqueness patterns
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- Stuck in a "Diabolical" sudoku
1, 2by SuDoKu_StUdeNt » Thu Nov 24, 2005 2:04 pm - 20 Replies
- 12939 Views
- Last post by Jeff
Sat Nov 26, 2005 6:43 am
- Stuck in a "Diabolical" sudoku
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- Stuck completely on a "tough" level
1, 2by Heliob » Sat Nov 05, 2005 5:16 pm - 24 Replies
- 11366 Views
- Last post by masb
Sat Nov 26, 2005 1:46 am
- Stuck completely on a "tough" level
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- can't figure out circular sudoku
by jeannie » Fri Nov 25, 2005 11:21 pm - 2 Replies
- 4888 Views
- Last post by r.e.s.
Sat Nov 26, 2005 12:49 am
- can't figure out circular sudoku
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- Conditional Disjoint Subsets
by rubylips » Thu Nov 24, 2005 10:34 am - 13 Replies
- 9821 Views
- Last post by ronk
Thu Nov 24, 2005 11:38 pm
- Conditional Disjoint Subsets
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- Offbeat fun with a 9-box bivalue uniqueness pattern
by Myth Jellies » Thu Nov 24, 2005 8:20 am - 0 Replies
- 2115 Views
- Last post by Myth Jellies
Thu Nov 24, 2005 8:20 am
- Offbeat fun with a 9-box bivalue uniqueness pattern
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- A beautiful n-digits/n-cells uniqueness example
by Myth Jellies » Wed Nov 23, 2005 1:23 am - 14 Replies
- 12361 Views
- Last post by Nick67
Thu Nov 24, 2005 5:39 am
- A beautiful n-digits/n-cells uniqueness example
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- more guessing
by cphuntington97 » Wed Nov 23, 2005 12:01 am - 6 Replies
- 3985 Views
- Last post by emm
Wed Nov 23, 2005 8:54 pm
- more guessing
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- Another kind of argument?
by bennys » Tue Nov 22, 2005 10:06 am - 9 Replies
- 3948 Views
- Last post by Jeff
Wed Nov 23, 2005 2:26 pm
- Another kind of argument?
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- Also stuck
1, 2by QBasicMac » Fri Nov 18, 2005 8:53 pm - 22 Replies
- 8095 Views
- Last post by MCC
Wed Nov 23, 2005 1:16 pm
- Also stuck
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- i'm stuck too
by simleung » Sun Nov 20, 2005 6:33 am - 10 Replies
- 3984 Views
- Last post by Shazbot
Wed Nov 23, 2005 7:04 am
- i'm stuck too
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- Nice X-Y Wing puzzle
by Hud » Tue Nov 22, 2005 11:52 pm - 2 Replies
- 2032 Views
- Last post by Hud
Wed Nov 23, 2005 5:38 am
- Nice X-Y Wing puzzle
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- Wondering if there is a solving technique for this?
by arsoncupid » Tue Nov 22, 2005 8:30 pm - 6 Replies
- 3915 Views
- Last post by arsoncupid
Wed Nov 23, 2005 3:40 am
- Wondering if there is a solving technique for this?
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- Is the 4 cell non-repetitive path common?
by tso » Mon Nov 21, 2005 8:00 pm - 8 Replies
- 3376 Views
- Last post by Jeff
Wed Nov 23, 2005 2:56 am
- Is the 4 cell non-repetitive path common?
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- yet another stuck newbie
by markf » Wed Nov 16, 2005 5:08 am - 7 Replies
- 3369 Views
- Last post by markf
Tue Nov 22, 2005 3:40 pm
- yet another stuck newbie
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- Triplet help
by SuDokuKid » Thu Nov 10, 2005 5:58 pm - 12 Replies
- 6066 Views
- Last post by kchyde@cox.net
Tue Nov 22, 2005 5:36 am
- Triplet help
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- Criterion for a Sudoku puzzle being solvable
by ram_einstein » Mon Nov 21, 2005 9:27 am - 2 Replies
- 3468 Views
- Last post by lunababy_moonchild
Mon Nov 21, 2005 10:07 am
- Criterion for a Sudoku puzzle being solvable
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- The "n digits sharing n cells" principle
by Jeff » Sun Nov 20, 2005 5:01 pm - 6 Replies
- 4919 Views
- Last post by Jeff
Mon Nov 21, 2005 6:46 am
- The "n digits sharing n cells" principle
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- Any ideas???
by hrcjcr » Sun Nov 20, 2005 4:08 am - 5 Replies
- 3375 Views
- Last post by hrcjcr
Mon Nov 21, 2005 2:37 am
- Any ideas???
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- Can anyone give me a little hint ?
by fairy elephant » Sun Nov 20, 2005 12:28 pm - 2 Replies
- 2220 Views
- Last post by fairy elephant
Sun Nov 20, 2005 5:39 pm
- Can anyone give me a little hint ?
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- Super Tough Sudoku from Crazy Dad...would love just a nudge
1, 2by bathmatters » Wed Nov 16, 2005 7:34 pm - 23 Replies
- 8778 Views
- Last post by Jeff
Sat Nov 19, 2005 8:04 am
- Super Tough Sudoku from Crazy Dad...would love just a nudge
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