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#812, January 11 - January 17:
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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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: kris

 11-Jan-2026, 12:51
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Shortest way I found:
x-wing – CE – CE – x-wing – CE – CE
 

by: Fred

 11-Jan-2026, 16:32
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 Schön für dich. Geht das etwas genauer?
Sorry, cannot translate the sarcasm into English.
 

by: kris

 12-Jan-2026, 18:30
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3
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@Fred: See Jan's hints below. Perhaps that's enough for you to solve.
The operators and many users of this forum don't like it when too much is revealed (spoiled) too early. Yesterday I just wanted to point out that no other tools like setti, UR or chains are needed.
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by: hepa

 11-Jan-2026, 11:19
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1
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5
 

by: OneGuess

 11-Jan-2026, 17:20
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 always demanding and super nice - took me a long chain to exclude 2 from one row, thereafter str8t forward. Thank you, hepa!
 

by: kris

 12-Jan-2026, 16:41
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perfect level of difficulty – doable without chains
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by: Solver_4

 11-Jan-2026, 10:50
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1
Filling Cells, Settis and Careful Elimination.
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by: acs
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4
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7
 The Weekly Str8ts puzzle #812
 

by: Jan

 12-Jan-2026, 15:12
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Key is the consideration that you can remove two digits from D4, which then allows you to remove a digit from E4, which in turn decides high/low in row E. The second x-wing decides high/low in column 4, which generates an avalanche of singles and solves.
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by: acs
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1
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3
 The Weekly Str8ts X puzzle #204
 

by: aw

 12-Jan-2026, 08:48
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 Seems to become a rule that the X-Puzzles are the hardeat of the set (not considering the jigsaws <:-)
Still stuck ...
 

by: AndreasM

 12-Jan-2026, 11:38
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 Solved it, but not cleanly. My first guess on GH2 was correct and made it solvable, but this is not satisfactory, of course.
 

by: qk

 13-Jan-2026, 03:40
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 Thanks a lot for the puzzle, acs.
So true aw. Actually, this week's Jigsaw felt much easier in my humble opinion.
At AndreaM: I got GH2 is low since the compartment FGHI3 does not contain 2 (due to A3). Yet, also after that i was stuck. Only with two chains, I found GHI7 is low and which of the two options in G7.... after that it was "straightforward".
 

by: AndreasM

 13-Jan-2026, 05:50
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 @qk: My guess was not on that GH2 is low but on the order of the digits therein. The flaw of my solution is that I wasn't able to prove that D6 cannot be 1.
The chains that may be still required with all of this appeared quite manageable to me.
 

by: OneGuess

 13-Jan-2026, 10:30
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wonderful puzzle, almost impossible to solve, at least for me - but amazing, how everything falls in place with one assumption (no 8 in row J)
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by: acs
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3
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3
 The Weekly Str8ts B puzzle #204
 

by: optimator

 12-Jan-2026, 11:49
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not too hard
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by: acs
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8
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6
 The Weekly Str8ts BX puzzle #204
 

by: Cosmanita

 11-Jan-2026, 06:59
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 Very nice str8t, solvable with B and X Power.
 

by: Martinus

 11-Jan-2026, 08:32
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 Easy going.
 

by: kmr

 11-Jan-2026, 08:44
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 Like Cosmanita. Straightforward and not difficult.
 

by: optimator

 11-Jan-2026, 11:04
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 4'
 

by: Susan

 11-Jan-2026, 11:11
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 Nice and easy
 

by: ThomasF

 11-Jan-2026, 13:52
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 like Susan
 

by: jgrab

 11-Jan-2026, 16:37
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 Only careful work.
 

by: Hel

 12-Jan-2026, 12:25
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19' WC
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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
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  • Guess work required for me
    - Essie
  • 1h
    - Julioflor
  • 46 mins Thanks!
    - CC
  • what a beast, needed several attempts and 2 guesses
    - Bassam
  • over an hour. Missed an elimination.
    - puzzled
  • Somehow tricky, but chaineless solvable
    - Gerd
  • Schwer, A5 dann glücklich gefunden. Danke.
    - S. Walt
  • 42'
    - Maven
  • 37:25 - just logic standard tools
    - Latimer
  • 43 min. - nice but difficult
    - Nessie
  • with chains
    - chris1
  • 1hr16', very difficult. VCE. At first I didn't think to solve. Danke!
    - barbara
  • 45' wing and CE
    - ThomasF
  • Mostly logical thinking; used a HC on 6 in row C
    - jgrab
  • ~45', longer than it should have taken
    - optimator
  • 36 min - chains in B5 and E6
    - Beate
  • 12' - rolls out pretty easily. I think a setti 5 halfway sped things up
    - vic
  • some CE and two x-wings
    - kris
  • 52' - needed some guesswork inbetween
    - COM
  • 1.08 h Ufff: mental workout!
    - Cleo
  • Pure logic.
    - MrL
  • Filling Cells, Settis and Careful Elimination.
    - Solver_4
  • 1h. Settis, CE, singles.
    - A B Traherne
  • 21/2 h with BCA.
    - H.E.
  • 58“ unbelievable, but it is solvable with pure logic. Whatever that means.
    - Greg
  • 1h. Way too long. Quite easy, if you know, where to look up...
    - MartinL
  • 1:00:29 schwierig aber machbar
    - zoo-pony (Tartlau)
  • good 5 star, not to hard. 54 min
    - Clemeau
  • 38 min, fun
    - 7iron
  • too long but no hints needed
    - Silke
  • pure logic, pure fun, 16'
    - easydoesit
  • 30 min - lots of fun :)
    - Susi
  • ganz logisch wars nicht für mich, aber immerhin auch nur 40 minuten gebraucht
    - dersoloist
  • 40' Pure logic.
    - Aubinger