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Archive
Since there has been interesting strategy discussion on these puzzles and by popular request, I have opened an archive on the last thirty weeks. The discussion section is open for continued posting.
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Discussion...
Latest threads are now at the top.
In addition, posts you have NOT read are in normal colors, older ones are in grey.
Please email me if you experience problems or bugs. Cheers, Andrew Stuart


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by:Santa Klaus

 

is.gd/2017_11_days_left_str8t

 

by: Fab

 
 
Harder than it first looked. CE and SI, then I chained a lot. At the end there were some non-chain arguments (settis, UR).
The lower right corner can be fixed by unicity, but without consequence on the rest of the puzzle ; there is maybe something more to be done there.

 

by: Bansasaab

 
 
@Fab, Lower right corner is the key. To fix it you have to assume that the other eleminated digits have to come from the related rows or columns above. For example when you fix J8 to 1, the column has to have a 2. That solved it for me.

 

by: Augenweide

Add to this thread
 
@Bansasaab: by UR considerations I have J9=2 and J8=1, but that does not mean, 2 is mandatory in 8; EFG 8 must contain 3, but not (yet) 2.
Nice str8ts on a windy day, thanks Klaus!

by:The Elf

 

is.gd/Elf_494_Star_X

 

by: Cosmanita

 
 
Nice and challenging. Whole toolbox needed. I used two short chains to decide number 3 and to finish.

 

by: Fab

Add to this thread
 
Nice one. With the toolbox and skewed fishes / single digit reasoning, I could solve for all the low digits 1-4 (except C4). For the high digits 5-9, progress can be made with fishes and skewed fishes, and a reasoning on the unicity of C4, but in the end I had to use small head chains to unlock (with easy fishes afterwards).

by:The Elf

 

is.gd/Elf_494_Sleigh

 

by: Loser

 
 
THX

 

by: ThomasF

 
 
thanks Elf, some wings did it for me

 

by: Hui Buh

 
 
yes, 4 x-wings – that's all

 

by: jgrab

 
 
Wing-based indeed.

 

by: pets

 
 
Thank you, Elf! Though there is no snow in my area, I really enjoyed your sleigh!

 

by: Jan

 
 
Pleasant little puzzle! There are also some nice settis to work on row H.

 

by: Fab

Add to this thread
 
Indeed, CEs, a nice sleigh of X-wings, and some settis for row H

by:Santa Klaus

 

is.gd/2015_2_sundays_left_str8t

 

by: kolumbus

 
 
Thank You Klaus for the nice puzzle!
At 17 solved cells I needed a head chain.

 

by: ThomasF

 
 
thanks Santa Klaus, very nice puzzle, also needed a small head chain

 

by: KDN

 
 
many thanks@Santa Klaus
really nice one, with a short head chain to decide F1

 

by: milkyjoe

 
 
Very nice indeed, cheers Klaus! Managed to solve w/o a chain, there's a very sneaky 4-fish.

 

by: jgrab

 
 
Thanks, Santa Klaus! A good challenge.

 

by: kolumbus

 
 
@milkyjoe: You are right, I overlooked the jellyfish, no chain needed, thanks for the hint

 

by: Christoph

 
 
Thanks, Klaus.
I had used an x-wing and a setti 7 argument.

 

by: Fab

 
 
Nice. CE, UR and wings up to 3-. I was too lazy to look for a 4-wing so used a SI on columns 1&2.

 

by: Jan

Add to this thread
 
Yes, that 4-wing really is sneaky!

Christoph, I can't see how a setti 7 argument could work - at least not in the position with 17 cells solved.

by:C-bear

 
15 minutes....fun

 

by: Chantal

 
 
Very funny thanks

 

by: Hui Buh

 
 
Not an extreme one. No advanced techniques required, just simple elimination and singles 8-|

 

by: Andrejs

 
 
It seems to me that this puzzle was good for resting after the difficult puzzles of recent weeks.

 

by: Jan

Add to this thread
 
Yes, Andrew's solver manages to solve this by itself when one helps it to discover the two singles it can't find due to a bug.



Article created on 27-June-2010.
This page was last modified on 17-April-2011.
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  • 32 min. Trivial until end, where I just needed setti's rule.
       - zombiedude - 7 hours ago
  • Trallalalallallaalala
       - uli - 8 hours ago
  • 6' Very easy !
       - Tosthene - 9 hours ago
  • 12min, easy
       - Martin - 1 day ago
  • 18' Str8t forward
       - Jay - 3 days ago
  • 50 min
       - spatzl - 3 days ago
  • 8:58 - Some solver support at the very beginning, then filling in numbers, watch for singles and two settis. A very fast one - Thanks!
       - Korbinian Bär - 3 days ago
  • 17' - easy this week
       - selecti - 4 days ago
  • 13' easy at all
       - UR - 4 days ago
  • 15', easy (finally :))
       - Emma - 4 days ago
  • 13'
       - Filip - 4 days ago
  • Finally one I could finish! Essie says it best: whoop-dee-doo!
       - Fleurette - 4 days ago
  • 13' str8 4ward
       - ttbass - 4 days ago
  • 18 minutes - must be an easy one.
       - fredx - 5 days ago
  • 14:30 enjoyably straightforward
       - Hildi - 5 days ago
  • 15' straightforward
       - martijn - 5 days ago
  • 17 min, without special problems
       - hopplahierkommich - 5 days ago
  • 12' - just one fish did it for me. Pretty easy this time
       - Carpat - 5 days ago
  • 6'
       - nina - 5 days ago
  • 14:30 easy does it
       - joe reitzl - 5 days ago
  • 16 min, an easy one
       - Chrissie - 5 days ago
  • 11' only CE is necessary, although one can speed it up with a UR at the end.
       - Fab - 5 days ago
  • 11 min
       - malue74 - 5 days ago
  • 14 mia.
       - Max - 5 days ago
  • 12:30, no settis, no fish, straightforward - nice
       - joeB - 5 days ago
  • 11''; Very simple
       - Ursa - 5 days ago
  • 9:06; easy going
       - sleepy - 5 days ago
  • 12:15 - too easy
       - Tim - 5 days ago
  • Whoop-dee-doo 31 min
       - Essie - 6 days ago
  • 22 min. Simple and straight forward
       - D-Day - 6 days ago