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#849, September 27 - October 3:
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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by: hepa

 27-Sep-2026, 11:21
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5
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5
 

by: kris

 27-Sep-2026, 14:40
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 Many small steps, but once again easier than it seems at first glance; doable with Setti and CE. Thank you, hepa!
 

by: jo

 27-Sep-2026, 19:33
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 Nice puzzle, considerably easier than last week’s. Which is actually not a problem at all, since I have a lot to do this week :-)
 

by: Hel

 28-Sep-2026, 14:47
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Wonderful puzzle, Settis and VCE. Thanks hepa!
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by: acs
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 The Weekly Str8ts puzzle #849
 

by: Klaus

 27-Sep-2026, 07:06
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H5 <> 4 makes quite a nice puzzle
 

by: Cleo

 27-Sep-2026, 21:22
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 Xwing 8 gives the position of 4 in G. Then follow Klaus.
 

by: Gerd

27-Sep-2026, 21:51
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 Now Klaus' hint makes senseW3Z8
 

by: Rudik

 28-Sep-2026, 08:39
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 What does W3Z8 mean??
 

by: hoke

 28-Sep-2026, 09:53
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 Captcha with wrong Focus?
 

by: A. Friend

 28-Sep-2026, 10:58
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 Even with Klaus‘ and Cleo‘s hint, this is a beast
 

by: Pete

 28-Sep-2026, 15:26
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 @A.Friend: A very tame beast, just a matter of setti 4,2,3,8 and CE :)
 

by: Gerd

 28-Sep-2026, 17:04
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 @Rudik, hoke is right, captcha on wrong place
 

by: A. Friend

 28-Sep-2026, 17:21
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 @susi low
 

by: A. Friend

 28-Sep-2026, 19:47
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 @Pete no… The point for me is, and I believe this is ignored too often here and on the right side, we all approach the puzzles differently and we all have strength (e.g. fishes) and weaknesses (e.g. settis) and CE and others are even another difficulty. When people say: “This one is easy.” Or as you say: “Tame”, this is your view, with your background and your experience. This may not apply to others. Some time I did them daily (bought the packs) and now I do it once a week at most. Hence my skills have degraded. As with my English since I stopped working. My 10 cent.
 

by: Pete

 28-Sep-2026, 21:02
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 Dear A.Friend,
If you are the first to use a non-objective term like "beast" to describe a puzzle's difficulty level, you shouldn't be surprised if someone else puts that into perspective. Up to now, "beast" has been used here to describe a puzzle that is exceptionally complex and can only be solved using unconventional methods—such as multiple chains.
(Without Klaus's hint, I do think it's a "beast.")
 

by: hoke

 28-Sep-2026, 23:28
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Without hints after Xwing 8:
In F if 2 is missing, then 1 is missing too and nothing else
3 missing in col 4 => 2 missing in col 4 => 123 missing in F, contradiction
5 missing in row F => 6 missing in row F => 6 missing in col 4 => 2 missing in col 4, contradiction
6 missing in row F => 6 missing in col 4 => 2 missing in col 4, contradiction
3 missing in row F => 6 missing in row F, contradiction
So missing in row F is 12 or 89, F56 must be 34 and 3 is missing in row E
8 missing in col 4 => 9 missing in col 4 and 89 is missing in row F, but 1 or 8 must be missing in col 7, contradiction
8 in col 4 => H4 = 4, which includes the hint of Klaus and solves.
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by: acs
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 The Weekly Str8ts B puzzle #241
 

by: optimator

 28-Sep-2026, 00:12
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 a very difficult pattern: I will try again during the day...
 

by: Cosmanita

28-Sep-2026, 06:26
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 Great! Very nice, but difficult one. Key for me were box 6, and box 4,5,1. E89=89 and E3=45 not working in these boxes, the same for B89=23 and E3=45. For both left options, D4 ist low, one of these options collapses soon.
 

by: Neunmalneun

 28-Sep-2026, 07:34
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  D4 = low is also consistent with my solution, but I cannot confirm that E89 <> 89.
 

by: Pete

 28-Sep-2026, 10:10
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 Nice surprise, a bit more difficult than usual, but CE and B-Power is enough.
(I agree with Neunmalneun)
 

by: aw

 28-Sep-2026, 12:24
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 Aesthetical judgement like Cosmanita - no wings, no Settis! (But result like Neunmalneun <:-) My keys were the possible spectra for the angles G456/4GHJ and D34/E321, and then it went surprisingly quick and straightforward - wonderful puzzle.
 

by: aw

 28-Sep-2026, 12:26
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 Correction: 3DE/E321
 

by: optimator

 28-Sep-2026, 15:56
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 finally! Mostly CE. Thanks, Andrew!
 

by: Only Human

 28-Sep-2026, 17:37
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difficult but straight forward - very nice puzzle!
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by: acs
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3
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 The Weekly Str8ts BX puzzle #241
 

by: optimator

 27-Sep-2026, 00:16
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1
 3'
 

by: jgrab

 27-Sep-2026, 01:15
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 13', not as fast as optimator ...
 

by: Maven

 27-Sep-2026, 14:21
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 Also 13'
 

by: pax

 28-Sep-2026, 08:30
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12'50'' :)
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by: acs
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2
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 The Weekly Str8ts X puzzle #241
 

by: jgrab

 27-Sep-2026, 02:44
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 A nice challenge. A chain shows that D4<>7 (x power). Then, however, I had to test B789 hi/lo.
 

by: Only Human

 28-Sep-2026, 17:39
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I like difficult puzzle - great one - but gave up this time - too many guesses needed, at least for me, will continue tomorow
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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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  • Wings and settis. But no way without hints. ♫
    - Alan B Traherne
  • Klaus's hint + Setti 4,2,3 + basics; other hints/guesses not needed!
    - Pete
  • @susi - low
    - b*k*
  • ich komme auch nicht weiter. dashalb schliesse ich mich Susi an. ist B89 hoch oder tief ?
    - dersoloist
  • 45‘
    - A. Friend
  • All those hints I found by myself, but do not find the sulution... Maybe someone can tell if B89 is high or low?
    - Susi
  • Sehr harte Nuss, viele Stunden trotz der bisherigen Hilfe. Nur ein x-wing gefunden.
    - b*k*
  • H5 mehr als 4, weniger geht nicht.. hilft mir aber auch nicht
    - Biggi
  • @dersoloist: es bedeutet, dass es keine 4 auf H5 geben kann
    - Rafa
  • 46', setti combinations
    - pax
  • 2hrs, big challenge. BCA (combined settis), wings, VCE, then h/l B89 is logic.
    - UZ
  • With a little help from my friend...
    - H.E.
  • 52' So hard even the hints barely helped. Just making guesses to start chains. Not fun at all.
    - ataraxia
  • I´m obviously blind, don´t see how this hint can help
    - Gerd
  • was bedeutet H5 ist ungleich 4?
    - dersoloist
  • 40min - glücklich geraten
    - Rot
  • I can find only 1 xwing on 8. Others?
    - Cleo
  • 42' with Klaus' beautiful hint. Quite interesting.
    - Maven
  • 49' at third attempt. Col. 4 was decisive. Settis and fishes.
    - Manfred
  • 3:04 Rekord ;)
    - Marit
  • 50' w/o hint, chain or "decision". Just ce, settis, wings...
    - waltweb
  • 35 min
    - Julioflor
  • 46' - The hint was helpful, but in an unexpected way
    - COM
  • Very careful elimination/Settis/Wings, in the end it was jgrab's hint that did it. 2h.
    - notsonewbie
  • Klaus' hint and some fish and setti
    - ThomasF
  • 2:02:53 extrem schwer
    - zoo-pony (Tartlau)
  • Filling cells, 1 x-wing, 1 setti. Hi/Lo decision on B89, then careful elimination.
    - Solver_99
  • 1:05 - Combinating
    - joop
  • not too difficult
    - Only Human
  • 30min, many x-wings,
    - bhk
  • Lucky guess on B89 hi/lo solves directly.
    - jgrab