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#808, December 14 - December 20:
The Weekly Extreme Str8ts Puzzle

by Andrew Stuart
WARNING: This is the Weekly 'Extreme' Str8ts.
Only attempt this puzzle if you have time and patience.
Using the solver will not help you. (much).
Oct 18th 2024
The solver can now handle Str8ts variants. Yay! The solver button on the player will now pass an appropriate parameter.
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.
All Access Supporters can load all puzzles from number 1.
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Puzzles 1 to 250 are available as Puzzle Packs, just $5.49.

Discussion...
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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No full solutions please!

by: Santa Klaus

 16-Dec-2025, 17:23
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is.gd/8_days_left_2025_str8t
 

by: tg

 16-Dec-2025, 18:06
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 Thank you very much Santa Klaus for your kind offer. But after 7 solved cells I don't have the slightest idea how to procede...
 

by: Auwei

 16-Dec-2025, 19:01
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 2 big big fish got it going. Best wishes to Santa!
 

by: jgrab

 17-Dec-2025, 00:39
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37 min; very nice. Thanks, Santa! Careful analysis of Setti 6 and Setti 7 options gets you started after the first 7 solved cells.
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by: hepa

 14-Dec-2025, 11:21
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4
 

by: OneGuess

 14-Dec-2025, 15:36
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 nice and demanding - thank you hepa! setti 5 to start, later setti 9 (2 options, where 9 could be missing, and I confess that I took a chain to exclude one option)
 

by: kris

 15-Dec-2025, 14:13
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quite difficult – like OneGuess
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by: acs
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 The Weekly Str8ts puzzle #808
 

by: Santa Klaus

 14-Dec-2025, 08:45
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F8=9 helps, ho ho ho
 

by: hp

 14-Dec-2025, 10:50
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 thank you Santa Klaus (Klaus or Stefan?) for this hint very nice pattern afterwords, with VCE and one xwing on 8 solvable

By the way, there won't be a str8ts Advent calendar this year? It would be a shame to go a year without one... days left
 

by: Santa Klaus

 14-Dec-2025, 11:36
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 hi hp,

a little bit of it was already there...
 

by: hp

 14-Dec-2025, 12:34
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 ok Santa i missed it last week :(

maybe nevertheless some else
 

by: MME

 14-Dec-2025, 16:26
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 IF AC2 is low, then AC6 is high and C7=5, and then F6=34 and F7=89. The rest isn‘t too difficult
 

by: hoke

 15-Dec-2025, 16:50
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Without the hint and after the head chain of MME another small chain on A3=6 leads to a conflict with Setti 3.
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by: acs
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4
 The Weekly Str8ts X puzzle #200
 

by: Willi

 14-Dec-2025, 15:12
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 That was a tough one! Took me more than two hours. Found no solution without chains
 

by: OneGuess

 14-Dec-2025, 17:17
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 2 high/low guesses made it work - impossible for me without chains/guess
 

by: hago

 15-Dec-2025, 16:03
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 E5 <> 1 may by helpful
 

by: optimator

 16-Dec-2025, 14:31
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 needed to guess that D4=1
 

by: pax

 16-Dec-2025, 20:49
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No hints or guesses, but a long time with many head chains...
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by: acs
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2
 The Weekly Str8ts B puzzle #200
 

by: optimator

 15-Dec-2025, 09:06
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 6'
 

by: Hel

 15-Dec-2025, 11:20
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 29' WC
 

by: EC

 15-Dec-2025, 13:09
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 two chains did it
 

by: kmr

 15-Dec-2025, 18:21
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Nice and straightforward. Thanks!
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by: acs
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 The Weekly Str8ts BX puzzle #200
 

by: WolfgangL

 14-Dec-2025, 00:35
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 Develops very nicely, standard tools only, thanks!
 

by: optimator

 14-Dec-2025, 12:55
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 it took a long time to find the step, after which it solves quickly. Thanks, Andrew!
 

by: kmr

 14-Dec-2025, 14:00
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 Like optimator. Then settis and URs. Thanks, Andrew, a very nice on.
 

by: ThomasF

 14-Dec-2025, 15:04
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 like WolfgangL, nice
 

by: Cosmanita

14-Dec-2025, 21:15
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Very nic one. The crucial step is to realize that one of the two options in Box 7/8/9 is not working checking H1/H2/J3.
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Page created on 27-June-2010.
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Copyright Jeff Widderich and Andrew Stuart @ Syndicated Puzzles, Privacy, 2007-2024
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  • without the hint this s really hard >75' w/ multiple chains; strongest chain I found was testing to see if J8-J9 can have an 8
    - Q
  • 45min, thanks to Santa for the hint :)
    - Silke
  • for those who find this puzzle to easy shall solve it without hint
    - dersoloist
  • using Santas hint, it was very easy to solve the puzzle
    - alopex
  • like legolas
    - chris1
  • 36 min, thanks to klaus and Mira
    - legolas
  • 53 min in 2nd trial Thanks for the hint Klaus. Got even stucked withe it. Then I guessed A3 must be the higher option. That solved it.
    - Mira
  • 40 Min. thanx to santa claus!
    - Joe Reitzl
  • 48:57 - only with hint from Klaus and a Hi/Lo in column 3
    - Latimer
  • 30 min
    - relijo
  • Got nowhere at all without that hint. Still couldn't solve it even with the hint. Really hard.
    - ataraxia
  • 45 min mit dem Hinweis von Santa Klaus
    - rot
  • No chains needed dank Klausens hint. Tres joli rectangle unique final. ♫
    - Alan Bourdillon Traherne
  • heute früh erfolglos,jetzt doch noch geschafft.so 2stunden
    - dersoloist
  • 1 h, nicht einfach, mit MME Tipp und mit Chain
    - Torsten&Irina
  • 48', with Santa's hint, str8forward, lucky guess F7. Very nice and refreshing! Danke!
    - barbara
  • with hint solveable in < 10 min
    - EC
  • 30' with Santa's hint.
    - Cleo
  • 20 min the hint
    - 7iron
  • 0:56:50 nicht ganz leicht aber schön
    - zoo-pony (Tartlau)
  • 45 min. In the end a UR cleared A5
    - Neinmalneun
  • 23 min on second attempt. Thank you, "Santa Klaus"'. E6 was crucial.
    - Beate
  • 34' with Santas help
    - ThomasF
  • needed Klaus' hint, then fast, otherwise chains
    - optimator
  • 50', I felt very slow today
    - l.
  • Hard with no help about 2 hours.
    - b*k*
  • Only with Klaus' hint
    - MrL
  • 12 min, reine Logik
    - humpti dumpti
  • At the beginnig luck in column 6 with h/l. Then first a little bit tested where 7 in row 1 is right and then the same with 6 in row 1.
    - Andreas
  • only with hint, thanks Klaus
    - Gerd
  • 3 h with 2 HC.
    - H.E.
  • 1:01
    - Willi
  • 1:15 - like jgrab
    - Hel
  • 1:07 - not easy, h/l in the last row and setti 2
    - Susi
  • 1h, 1'
    - pax
  • 1h; CE and HCs.
    - jgrab
  • 55' No chains.
    - Aubinger