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#676, June 4 - June 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).

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.
Share and Enjoy
Puzzles 1 to 250 are available as Puzzle Packs, just $5.49. Pack 3, 4 and 5 just released!

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: hone

Reply to this post
@flo: As the forum on str8ts.de is still down you can compare your solutions with the following CSV-files (0=Black, negative=Black clue)

Quaoar

6;7;3;4;2;5;0;12;13;11;8;9;10;
3;4;5;13;1;2;7;10;12;6;11;8;9;
5;3;4;6;0;7;9;8;0;13;10;12;11;
1;12;2;11;7;3;8;5;6;4;9;10;13;
2;1;0;5;8;10;11;6;7;9;0;13;12;
4;13;7;1;3;12;10;11;9;2;6;5;8;
0;2;6;3;5;4;0;9;8;10;7;11;0;
12;11;8;10;9;13;6;7;0;3;5;4;2;
7;8;-9;2;4;1;3;0;11;12;0;6;5;
11;5;13;12;6;9;2;1;10;8;3;7;4;
9;10;11;8;0;6;5;4;0;1;2;0;3;
10;6;12;9;11;8;4;3;5;7;0;2;1;
8;9;10;7;12;11;-13;2;4;5;1;3;0;


Gonggong16

5;1;4;3;2;0;11;13;14;12;0;9;8;7;6;10;
12;2;1;7;13;14;10;16;15;9;4;11;6;3;5;8;
9;-16;5;6;4;0;14;15;0;10;0;3;1;2;0;11;
3;8;6;9;10;2;15;14;11;13;1;16;7;4;12;5;
4;5;3;2;1;0;12;11;13;14;0;8;9;6;10;7;
7;6;2;8;14;16;13;12;10;15;3;1;4;5;11;9;
11;10;0;4;5;-1;7;0;9;8;0;2;3;0;14;13;
8;7;14;5;16;9;1;6;3;11;10;12;2;13;15;4;
6;4;15;1;11;8;3;7;12;16;13;14;5;10;9;2;
10;9;11;0;3;6;2;4;1;7;8;5;0;14;13;12;
2;0;10;11;6;7;9;5;8;0;14;15;13;12;0;3;
1;14;9;13;15;10;5;8;2;4;12;7;11;16;3;6;
0;15;13;14;12;11;16;0;7;5;9;6;10;8;4;0;
15;13;7;12;8;5;6;1;4;3;11;10;14;9;2;16;
14;0;8;10;9;0;4;3;5;2;0;13;12;11;0;15;
13;11;12;0;7;3;8;2;6;1;5;4;0;15;16;14;

CSVs of the unsolved puzzles are posted in WE#673

by: Stepf

Reply to this post
19', Lots of Logic but nothing else 🙂

by: hp

Reply to this post
very nice pattern,
one GAP F789 enough to solve, rest does the solver

by: kst

 
is.gd/kst_676_BX

 

by: kris

 
 
very nice, (box-)setti was essential, thanks kst

 

by: ThomasF

 
 
indeed, very nice, like kris; thanks

 

by: Martinus

 
 
Settis, box settis, one UR. Thanks!

 

by: Susan

 
 
Very nice, just the right level of difficulty

 

by: kmr

 
 
Absolutely agree with Susan. Perfect level of difficulty.

 

by: ralph maier

Add to this thread
 
Finally i had to redo it a lot . no chains settis CE and box settis

by: kst

 
is.gd/kst_676_B

 

by: aw

 
 
Roaring silence usually has a meaning, too ... <:-)

Spoiler alert: After settis 5,6,7,8,4 and conditional settis 2,3 (and an UR EH78) the right (lower) alternative in E5 solves (comparatively easyly), while the wrong (higher) alternative can be falsified (comparatively hard to do).

Nevertheless too hard and chainy to be real fun (at least for me) :-)
... which does NOT mean that I am not extremly grateful for ALL the puzzles!

 

by: Augenweide

 
 
no 9 in col 6 leads to error:
GHJ6=678
J4=3,H4=1, 6 mand in col 4, no 9 in col4
9 mand in blk 2,8 but only present in col 9
Very challenging puzzle, thanks to kst for perpetuous(?) joy

 

by: kmr

Add to this thread
 
Thank you for the hint, Augenweide. For me it was the key to the solution. Nonetheless: Challenging.


by: kst

 
is.gd/kst_676_X

 

by: pax

 
 
Thank you kst, this one took me some time and HC. BX was quick and easy :)

 

by: jgrab

 
 
Took me some time as well, thanks. Had one chain at the beginning to clear J123 hi/lo, then it went smooth until the end when bottom left corner made some difficulties.

 

by: ralph maier

 
 
re thediagonals 2-7 and 8-0 and the other one 5-7and 1-4 ??? ori did something wrong and i am stuck

 

by: Maven

Add to this thread
 
Ralph: your diagonals are correct, assuming you mean 8-9

I got stuck on the lower-left after one early chain. Had to use a second chain to solve.

by: kst

 
is.gd/kst_676

 

by: Nessi

 
 
a very fine puzzle.

 

by: TRP

 
 
Very hard, for me only possible with HC and UR.

 

by: Augenweide

 
 
after 14 solved cells you can see that 2 can be missing only in 1 column, but must be missing in at least 1 row

 

by: Maven

Add to this thread
 
Took a long time. The hint on 2 was very helpful.
Thanks for the puzzle!

Page created on 27-June-2010.
This page was last modified on 08-Jan-2023.
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  • Stuck a few times. Thanks to Greg's hint I did it finally.
    - Fred
  • 15! nice and easy, setts
    - Bassam
  • 24 ok for me
    - dwg
  • 19 min. 1 setti, logic
    - juehe
  • Lovely puzzle. Just right.
    - Essie
  • Lovely puzzle. Just right.
    - Essie
  • Lovely puzzle. Just right.
    - Essie
  • Lovely puzzle. Just right.
    - Essie
  • 10' easy
    - Tosthene
  • 19:03 - nice monday - Thanks
    - Latimer
  • done
    - chris
  • 36 min - alles logisch
    - Rot
  • 24 mins Thanks to Greg's hint.
    - CC
  • 25' min with just logic fun. Thanx!
    - UZ
  • 21'15'', nice one with a couple of settis and some logic.
    - pefferlass
  • Thanks Greg, finished it at last
    - WiltshireEagle
  • machbar, mit Settis und einem Widerspruch gelöst. Danke
    - S. Walt
  • 2nd attempt. On first attempt failed to notice F8 could not be 5.
    - Greg
  • Yeah! Did it! (but needed 3 starts ...)
    - A B Traherne
  • 17 min
    - Alex
  • 15' liked that one a lot
    - Ske
  • Some settis, C9 = mount everest.
    - marianne
  • Good Puzzle to do without candidates
    - Flo
  • 20' second attempt, I needed Settis
    - Emma
  • 24 min. - very nice
    - Nessie
  • Made it after a lot of interruptions. Thanks.
    - triemers
  • 8 min - easy, just filling in numbers
    - Susan
  • very nice puzzle, no special tools needed but still very nice 23 min
    - easydoesit
  • 13 min only with singles and x-wings. A good one for a very sunny day
    - Charlie
  • 22 min - nice work-out
    - Beate
  • 25'11 on second try. Only logic
    - Michael
  • Needed a chain.
    - mparmen
  • 10' relaxing
    - Maven
  • 15 min. - fish of 6 does it all
    - tbr
  • 11 mins, a lot of singles - no settis or any sea cretures needed.
    - Miss P
  • Quite easy. 23 min, though.
    - jgrab
  • 32' min - needed some settis and seafood
    - COM
  • 22 min - exactly the same opinion as Korbinian Bär
    - Michael
  • 11 min - after right h/l decision in column 5
    - Susi
  • 8 min - nina you're right
    - Nessi
  • 21' - Nice one.
    - LK
  • 45' WC
    - Hel
  • 20 Min. just logic!
    - Joe Reitzl
  • 39 min, the right position of 4 in 9
    - poblid
  • 18' smooth
    - Richard
  • 35:39 No special tools (not even settis) needed - Very careful elimination & intense watch for singles is enough. Really nice one - Thanks!
    - Korbinian Bär
  • about 20 min
    - Loser
  • CE in row F - done.
    - OneGuess
  • Great: A single big Fish solves all.
    - Jens
  • 6' I wonder if I made a mistake somewhere (i.e. a wrong assumption) which made me so much quicker than anybody else.
    - nina
  • 23‘ no setis, wings, chains, fishes
    - TheSunnyOne
  • Hm, 50 min, needed a chain...
    - schnutep
  • 28' - very nice for a lazy sunday morning
    - Volker
  • 26' -2nd attempt
    - alopex
  • 25' after an innitial mistake it was nice and easy ;)
    - susu
  • 26'12 easy
    - Joe
  • No candidates
    - pax
  • 22', settis, singles, nice
    - Ute
  • 21'50 leicht, kein Problem
    - zoo-pony
  • 24'15 good fpr me :-)
    - Stephan