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#811, January 4 - January 10:
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.
Share and Enjoy
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: Fred

 4-Jan-2026, 16:07
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@ admin: Could you please remove these edit accidents.
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by: hepa

 4-Jan-2026, 11:39
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2
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3
 

by: OneGuess

 4-Jan-2026, 14:17
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 nice and demanding - as always - thank you hepa!!!
 

by: e

 4-Jan-2026, 14:22
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1
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by: e

 4-Jan-2026, 14:22
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by: e

 4-Jan-2026, 14:22
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by: e

 4-Jan-2026, 14:22
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 4-Jan-2026, 14:22
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 4-Jan-2026, 14:22
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 4-Jan-2026, 14:22
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 4-Jan-2026, 14:22
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by: e

 4-Jan-2026, 14:23
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 4-Jan-2026, 14:23
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 4-Jan-2026, 14:23
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 4-Jan-2026, 14:23
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 4-Jan-2026, 14:23
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by: e

 4-Jan-2026, 14:23
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by: e

 4-Jan-2026, 14:23
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by: e

 4-Jan-2026, 14:23
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by: Hel

 4-Jan-2026, 15:45
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very nice, VCE, settis and B-power, no chain. Thanks hepa!
Add to this thread

by: acs
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2
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3
 The Weekly Str8ts puzzle #811
 

by: jgrab

 4-Jan-2026, 01:10
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1
 Hi/lo in col. 1 can be decided by a fast UR problem after a Setti.
 

by: kris

 4-Jan-2026, 13:00
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1
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 I'd be interested to know if anyone has found a solution without guessing or long chains.
What I found, besides some CE:
-- Setti 8 -> J56=78
-- If GHJ1==high -> contradiction to Setti 5 (don't see jgrab's UR)
-- Setti 6 -> 6 in A789
-- H2≠1 (UR 123)
-- C8≠68 (UR 68)
At only five solved cells, I don't make progress. Setti 4,5,1,9 still unclear, no wings ... hints welcome
 

by: Greg

 4-Jan-2026, 13:38
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 exactly same here. I am lost.
 

by: Hint

 4-Jan-2026, 13:47
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 B9=9 makes it easy
 

by: aYlNlfdX

 4-Jan-2026, 14:27
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 555
 

by: aYlNlfdX

 4-Jan-2026, 14:27
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 555
 

by: aYlNlfdX

 4-Jan-2026, 14:27
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 555
 

by: aYlNlfdX

 4-Jan-2026, 14:27
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 555
 

by: aYlNlfdX

 4-Jan-2026, 14:27
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 555
 

by: aYlNlfdX

 4-Jan-2026, 14:27
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 555
 

by: aYlNlfdX

 4-Jan-2026, 14:27
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 555
 

by: aYlNlfdX

 4-Jan-2026, 14:27
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 555
 

by: aYlNlfdX

 4-Jan-2026, 14:27
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 555
 

by: aYlNlfdX

 4-Jan-2026, 14:27
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 555
 

by: aYlNlfdX

 4-Jan-2026, 14:27
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 555
 

by: aYlNlfdX

 4-Jan-2026, 14:27
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by: aYlNlfdX

 4-Jan-2026, 14:27
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 555
 

by: aYlNlfdX

 4-Jan-2026, 14:27
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 555
 

by: aYlNlfdX

 4-Jan-2026, 14:27
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 555
 

by: aYlNlfdX

 4-Jan-2026, 14:27
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 555
 

by: aYlNlfdX

 4-Jan-2026, 14:27
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 555
 

by: aYlNlfdX

 4-Jan-2026, 14:27
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 555
 

by: aYlNlfdX

 4-Jan-2026, 14:27
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 555
 

by: aYlNlfdX

 4-Jan-2026, 14:27
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 555
 

by: aYlNlfdX

 4-Jan-2026, 14:27
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 555
 

by: aYlNlfdX

 4-Jan-2026, 14:27
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 555
 

by: aYlNlfdX

 4-Jan-2026, 14:27
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 555
 

by: aYlNlfdX

 4-Jan-2026, 14:27
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 555
 

by: aYlNlfdX

 4-Jan-2026, 14:27
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 555
 

by: aYlNlfdX

 4-Jan-2026, 14:27
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 555
 

by: aYlNlfdX

 4-Jan-2026, 14:27
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 555
 

by: aYlNlfdX

 4-Jan-2026, 14:27
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 555
 

by: aYlNlfdX

 4-Jan-2026, 14:27
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 555
 

by: aYlNlfdX

 4-Jan-2026, 14:27
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 555
 

by: aYlNlfdX

 4-Jan-2026, 14:27
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 555
 

by: aYlNlfdX

 4-Jan-2026, 14:27
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 555
 

by: aYlNlfdX

 4-Jan-2026, 14:27
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555
Add to this thread

by: acs
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3
Like
2
 The Weekly Str8ts X puzzle #203
 

by: Cosmanita

 4-Jan-2026, 07:42
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 Nice but challenging. Key for me was to see that A9 = 7/9 is not working in diagonal \.
 

by: jgrab

 4-Jan-2026, 11:31
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Indeed challenging. Some HCs at the end for the remaining small numbers.
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by: acs
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 The Weekly Str8ts B puzzle #203
Reply to this post

by: acs
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 The Weekly Str8ts BX puzzle #203
 

by: Alois

 4-Jan-2026, 04:52
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 Chainless delight
 

by: kmr

 4-Jan-2026, 10:01
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Like Alois. Pure fun with all BX techniques and VCE.
Add to this thread
Page created on 27-June-2010.
All puzzles not marked 'guest compiler' on this site are trademarked and cannot be reproduced without permission.
Copyright Jeff Widderich and Andrew Stuart @ Syndicated Puzzles, Privacy, 2007-2024
Caution!
Boast or Rant!

Tell everyone if you solved this puzzle, how long it took or if you gave up.
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Comment, including time to solve (or not :)


For questions or discussion, please use the main comment form.
  • @pepita: Falls J1=6, schau was wegen Setti 4 in DE345 passiert,
    - jgrab
  • 1
    - aYlNlfdX
  • 1
    - aYlNlfdX
  • 555
    - aYlNlfdX
  • 555
    - aYlNlfdX
  • 555
    - aYlNlfdX
  • 555
    - aYlNlfdX
  • 555
    - aYlNlfdX
  • 555
    - (select 198766*667891 from DUAL)
  • 555
    - (select 198766*667891)
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  • 555
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  • 555
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  • 555
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  • 555'||DBMS_PIPE.RECEIVE_MESSAGE(CHR(98)||CHR(98)||CHR(98),15)||'
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    - aYlNlfdX
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    - aYlNlfdX
  • 1
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  • 1
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  • 1
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    - aYlNlfdX
  • 1
    - aYlNlfdX
  • 555-1; waitfor delay '0:0:15' --
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  • 1
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    - aYlNlfdX
  • 1
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  • 5550"XOR(555*if(now()=sysdate(),sleep(15),0))XOR"Z
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  • 1
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  • 1
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    - aYlNlfdX
  • 1
    - aYlNlfdX
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  • 1
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  • 1
    - aYlNlfdX
  • 1
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  • 1
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  • 1
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    - aYlNlfdX
  • -1 OR 5*5=25 --
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  • 555
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  • 1
    - aYlNlfdX
  • 1
    - aYlNlfdX
  • 555
    - aYlNlfdX
  • Over 1h with all the hints. Thanks
    - Cleo
  • 33 min. Didn't see the logic, it was all just lucky guesses. No fun for me.
    - Amoena
  • 31’ second try, one chain
    - Greg
  • 95 min. Only one lucky guess at the end on B89 needed. First time solved without using hints.
    - Mouche
  • 1h, one high low guess (row J) did it
    - OneGuess
  • 30 min, hint: 2x no 9
    - Alfredo
  • 1h - like jgrab
    - Hel
  • Done by trial and error. Didn't find a logical way.
    - MrL
  • 28'30 - on third attempt. H/l in col 1, later on in col 6 and row E - not that smart
    - Beate
  • 1 h/l, 1 chain, nice
    - chris1
  • 17 min - a real 5 star
    - Nessi
  • Guten Tag in die Runde, brauche dringend einen Tipp
    - pepita
  • Entscheidung Spalte 1 GHI über h/t hat es gelöst. Brauch noch immer lange.
    - bhk
  • ich fand es sehr schwer, 95 min
    - dersoloist
  • 60'. Two very short chains at the end. Nice.
    - MartinL
  • 21 min in second attempt - h/l in column 1
    - Susi
  • 49', a setti opens it
    - pax
  • 37' after 3 attempts.
    - Jim
  • 62 min -
    - wjanet
  • 43 min; two or three HCs and Settis; may be there are more elegant ways.
    - jgrab
  • 60' No chain.
    - Aubinger