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#756, December 15 - December 21:
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. I will add some examples when I've finished producing some stock. See version history. Not guaranteed to be bug free, so please let me know of any funnies or errors.
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...
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


is.gd/3_days_left_2024_str8t
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by: Santa Klaus


is.gd/4_days_left_2024_str8t
 

by: jgrab

 Very nice, thanks! Only CE and wings. Possible UR not needed.
 

by: kmr

 Great puzzle. CE, settis, wings, Thank you!
 

by: Jens

Plenty of Swordfisches and two Wings - 4_days_left_2024_str8t is surprising.
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by: Santa Klaus


is.gd/5_days_left_2024_str8t
 

by: Cosmanita

 Thanks, so I enjoy waiting for the holidays even more. Nice puzzle, I needed one chain to decide where the 9 is in B. Later on interesting setti considerations.
 

by: Ben

 No chain needed - just setti and wings.
 

by: Maven

 Thanks for the present, Santa! I'm still working through it, but it gives a nice challenge at the end of the week
 

by: Auwei

 Thanks to out grandmaster! In H a UR did the job
 

by: Jens

 Got it by an UR, which workes sophisticationally in all directions as "special operation" in upper part right. No BCA, but some wings clears the rest.
 

by: kmr

 Thanks, Santa Claus, very nice surprise.
 

by: BP

Very enjoyable, many thanks!
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by: MartinL

Combined settis give the solution:
If there is a 7 in G, there is a 7 in 1. If there is a 7 in 1, there is no 4 in G.
If there is no 7 in G there is no 4 in G123.
So, G123 is 321
The rest is standard tools.
 

by: hp

 Clever Observation
Even with this hint shortest path for me:
Setti 2 and 6, UR and finally xwing 9
 

by: aw

Tsss - Thanks! I had tried the combined Setti 5+8, but not 4+7 <:-)
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by: acs

 The Weekly Str8ts puzzle #756
 

by: Jens

 Hint from MartinL clears G123.
hp pointed out, that BCA on 2 and 6 could follow. Than I couldn't see any UR, but I caught a nice Jellyfish, which solved the rest.
 

by: hoke

 One UR was in CF23 for me.
 

by: Jens

Poor CF23=ur78 clears only C3.
Now I find an other UR: BD16=ur89.
It takes 7 away from C1 and offers us CF23=Xwing7 instead of Jellyfish7, which is able to clear the rest too.
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by: acs

 The Weekly Str8ts X puzzle #148
 

by: Cosmanita

 Nice, but some chains needed. My first one was the h/l decision in column 5 in combination with row B.
 

by: Ollie

 Like Cosmanita. Needed three long chains.
 

by: pax

 Difficult, but fun. Took me some time to see the last head chain, which excluded one 6 in the diagonal J1 / A9.
 

by: Torsten&Irina

 C3=3
 

by: BP

 One chain to solve E5.
 

by: OneGuess

needs no chain, CE, fish (e.g. 7), X (e.g 8 and 7), UR (e.g. 4/5 in H/J) - and to start with: only 2 options for 1 in long diagonal - thus, A1 cannot be 1 - this solves most high/low decisions
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by: acs

 The Weekly Str8ts B puzzle #148
 

by: hone

 Ultra hard. To make it more convenient you can use this hint: there is no 8 in column 7.
 

by: Maven

 Thanks for the hint. That was indeed tough!
 

by: Ollie

 Rather quiet down here - don't know, if others succeeded, so maybe 2 more hints will help: No 1 in row A and D1 = 4.
For me this was the most difficult puzzle I ever did.
 

by: Neunmalneun

 Even after hone's hint it was very difficult. It helped to see that in C 7,8,9 there is only one 8.
 

by: OneGuess

 hard - multiple chains, I did at least 20 of them - but 2 tips mentioned above (only one 8 in column 7,8,9 - thanks Neunmalneun, and a 50:50 guess on D1, thanks Ollie) enough to find quickly the solution. Nice Puzzle!
 

by: Loser

 THX, without the hints, I had a whole in my solutionset.
 

by: BP

Very nice with hone's hint, too chainy without.
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by: acs

 The Weekly Str8ts BX puzzle #148
 

by: Martinus

 Really nice, thanks! Key was E89. Some settis needed.
 

by: Ollie

 Chainless fun, thnx!
 

by: pax

 Thank you Andrew, very nice! Good difficulty level for a lazy Sunday.
 

by: Hel

 Very nice! Like Martinus. Thanks!
 

by: BP

Perfect level of difficulty. Standard tools plus a combined setti on 2,8. Fun!
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  • thanks to Susi
    - easydoesit
  • Danke für die Hilfen, nach vielen Anläufen damit geschafft. "nicht auf dem Weg zur Arbeit"
    - b*k*
  • 29', 3rd attempt, hard nut
    - AB Traherne
  • @easydoesit: there is no 2 in column 7
    - Susi
  • 25' - tough. Thx!
    - triemers
  • 33 min - 3. Versuch - Danke an MartinL und flowerwaffle
    - Rot
  • 23' thanks to Martin's hint.
    - Ske
  • if I follow the hints, i'm missing a 2 a bit further on??? Where am I going wrong
    - easydoesit
  • Nice Setti sequence
    - jgrab
  • 2h, ohne hint. Test von G2, dann alle settis. col7 sehr interessant. Schweres aber schönes Rätsel. Danke
    - S. Walt
  • Done with MartinL's help, thanks!
    - MrL
  • @Ingo: I am Martin L., not Martini ;-)
    - MartinL
  • 1 hour on 2nd try - hard nut; with hint and many settis
    - Nessie
  • 25 min, with Martinis hint. Thanks
    - Ingo
  • 28 min with MartinL's hint
    - Alex
  • 36‘ second attempt
    - Richard
  • Done with the hint of MartinL. Thx.
    - E.H.
  • 55 min with the hint of MartinL and flowerwaffle, without no chance. Only the stars were beautiful today... ;)
    - Susi
  • 90 min, without hint
    - dersoloist
  • 31' - some setti chains (and setti 9 in the end was nice :)
    - jo
  • 58' - got stuck until I read Martins hint - good logic!
    - COM
  • 50 min
    - 7iron
  • 50 min. Even with the hint from MartinL it was quite tricky. Nice.
    - juehe
  • 30' even with the hint not trivial
    - ThomasF
  • 36 min, no chains, combined settis. A finde puzzle, just as I like it!
    - charliepat
  • Thanks to MartinL finally done.
    - mpaul
  • Nice one - no chain needed
    - Witch
  • pretty hard - needed the hint and two chains - 48min
    - Ollie
  • 1h-first tried like Brett, blindfolded myself, drove to work, put plugs in my ears. Didn’t work. Then I went home, opened my eyes et voilá
    - ThePersistentOne
  • 30‘, mostly setti work, some fishes, no chains necessary
    - Janostar
  • 19', aber nur mit tipp von MartinL
    - humpti dumpti
  • 1h 20min, schwer, Versuch in G7
    - Torsten&Irina
  • 17 min - needed several chains - a fine puzzle
    - Nessi
  • unsolvable, even sitting on the desk and eyes open
    - puzzled one
  • 1 hour and 15 min. For me, very hard. It was all a concatenation of Settis.
    - Emma
  • 20', setties
    - pax
  • 40 mins, very nice, large gap and combined settis was the clue
    - Jan
  • 0:22:33 schön, nicht zu schwer
    - z
  • like Brett, only that i´m not driving to work blindfolded and that after more than an hour, i don´t even have a clue how to get started
    - mpaul
  • ~1h, needed chains. G7=highest possible candidate makes it solvable with standard tools
    - flowerwaffle
  • 1 h, needed a careful look, all setti options let to the same result.
    - Cosmanita
  • 7 mins no settis no hint, while driving to work on the freeway and blindfolded
    - Brett