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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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For the benefit of those who don't like head chains I took Hone's puzzle for another spin and came up with this more relaxing (and hopefully enjoyable) one :



To please the desperados I took Hone's pattern for quick spin to see what turned up.



by: bansalsaab

Thanks Leren for this puzzle. 5 was key for me for couple of small headchains and that did it. really enjoyed it.


by: Cole

Add to this thread
Nice puzzle. A small head chain determines the correct number in C8 which resolves.


hello puzzle creators

more puzzles available in the toolkit?


by: Andy B.

Support !


by: Berny

More support!


by: Claus H. Tonelier

Support !!!!!!!!!!
(are you here - Klaus?)


by: Klaus

Hi Claus H. Tonelier,

of course i'm here, i'm always here, i'm born to be here, but i'm no puzzle supporter anymore.

its early in the morning in Australia right now, so i thinks not too long that Leren will jump in.

Best wishes to all of you...


by: Claus H. Tonelier

ah - I see. "Born to be here" sounds quite funny. Didnt know you retired - thanks for all your puzzles over the years ! I really appreciate your work!


by: Christoph

Add to this thread
Hi Klaus,
everybody will miss your famous "one more" puzzles.
Anyway, I want to thank you very much for all your efforts and your leading role for so many years.
My best wishes to you.


To#404: I am a little bit late, but came to six different solutions,all correct. Is that possible?


by: bansalsaab

Hi Gerd

Puzzle was bit chainy but unique.


by: Gerd

Thank you for your answer bansalsaab.
But at the very end a UR came up for me with 2,3 and 4 in BCD 67, which wouldn't make it unique. Also D5, EF1 and FG2 for me can be either 1 or 3.


by: hone

D5=1 is impossible because of the black 1 in C5.


by: Gerd

Add to this thread




by: ghw

Thanks, hone.
My favourite today - CE and standard tools.


by: Jan

Very nice, a progression of wings and one very early naked triple lead to 18 unsolved cells, at which point a 4-cell head chain is needed in order to solve the puzzle.


by: Stefan

Thank you, hone, wonderful puzzle.
No chain needed, fishes, settis and CE are enough.


by: Harm

@hone: thanks for this very nice and demanding puzzle.
@Jan: at your point with 18 unsolved Setti on 6 solves.


by: hp

Thank you hone for another masterpiece


by: Jan

Harm: You are correct, of course!


by: Christoph

Add to this thread
Excellent puzzle, hone! Thanks.
CE and standard tools, no chain, no UR.



an additional B9=4 turns it into a rather moderate one


by: Leren

I tried something similar. A few single extra clue positions create a moderate puzzle but nothing to tempt the regulars. Hence my alternative.


by: batzschrabat

Maybe I'm not a regular anymore, but I like both of your alternatives. Klaus' one is chainless and to solve Leren's one I needed just a very short head-chain in the end.


by: Klaus

Hi batzschrabat,

nice to hear from you again, hope youre doing well...


by: Christoph

Thanks, Klaus. With your hint it is straight forward without chain.


by: kmr

Both puzzles are nice and have a good level of difficulty. Also needed a small chain for Leren's version and came along fine with Klaus' hint. Thanks to both of you.


by: hp

very nice with Klaus hint
CE and three applications of BCA
thank you Klaus, maybe this is the beginning of Releases of new high end puzzles from you


by: KDN

Thanks Klaus for your hint. Solvable str8t forward


by: BigPapi1986

First, Thank you everyone here at Str8ts, the puzzles and comments provided are great. I'm relatively new to the Extreme Puzzles and I'm not sure what the term "BCA" refers to. Could not find it in the Strategies sections.


by: Klaus

Hi BigPapi1986,

BCA is a somewhat different way to look on the fact whereupon Settis are build, but it produces the same results.

you find something about in the Str8tsForum, forum.str8ts.de, either in the german part, where its called SZA, or in the english part under "Solver Strategy".


by: BigPapi1986

Add to this thread
Thanks Klaus, took me a little time but I understan the strategy now


Andrew's puzzle seemed a bit chainy this week.

Here is an alternative set of clues that might be more enjoyable:



by: pax

Nice one, Leren. Standard and a short SI.


by: Jan

Add to this thread
Yes, in the position before the final (head) chain there are many interesting setti-based interactions.

I made an assumption about DE5 that leads to a setti-based contradiction after following three cells.

Article created on 27-June-2010.
This page was last modified on 17-April-2011.
All puzzles on this site are trademarked and patented and cannot be reproduced without permission.
Copyright Syndicated Puzzles Inc, 2010-2011

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  • thanks, Klaus, for the hint!
       - Stadtlicht - 8 hours ago
  • with hint too easy without hint too hard ;-)
       - bsz - 13 hours ago
  • 32' with Klaus' hint, settis and x-wings
       - Lilli - 1 day ago
  • 32 min. - using Klaus' hint and a guess.
       - Axel - 1 day ago
  • 107' without hints, many chains
       - Arjan - 1 day ago
  • 33'
       - humpti dumpti - 2 days ago
  • 21 min, but got a message about wrong cells...
       - EC - 2 days ago
  • 45 min with the hint and without guessy,,,but second try...one x wing exspecially for puzzeled one
       - efchen - 3 days ago
  • 35 min.; needed the hint
       - joeB - 3 days ago
  • 32' with help and all the tricks
       - flowermount - 3 days ago
  • 20 min, with Klaus' hint.
       - jgrab - 4 days ago
  • 25 min with the hint
       - schaaf - 4 days ago
  • 34' with hint - quite standard
       - selecti - 4 days ago
  • 50 min with settis and a chain.
       - mv - 4 days ago
  • Done in a couple of hours without the hint.Needed chains.
       - mparmen - 4 days ago
  • 45 min with hint.
       - Boerny - 4 days ago
  • 45 min: with the hint a nice one. X-wings and setties
       - Cosmanita - 4 days ago
  • 22min with Klaus' hint - no chance to do it on my own :-)
       - onnola - 4 days ago
  • 27' with the hint - still puts up a fight with it, unexpected x-wing leads to the solution
       - Jan - 4 days ago
  • 22 min - But I tried it twice with the hint
       - Elfriede - 4 days ago
  • 45' with Klaus' hint. Thanks for that
       - KDN - 4 days ago
  • 41 min with hint
       - D-Day - 4 days ago
  • 22 min with Klaus' hint, otherwise not doable for me
       - Alex - 4 days ago
  • nice one with the hint ;)
       - silke - 4 days ago
  • 40min with hint
       - COM - 4 days ago
  • what a beast! First, tried it on my own - without any success. Using Klaus's hint, I needed 21 min and one lucky guess
       - un - 4 days ago
  • 41' with Klaus' hint
       - Hel - 4 days ago
  • With Klaus' hint very enjoyable. Thanks to both Andrew and Klaus
       - Toni - 4 days ago
  • 19 min, with the hint straightforward
       - easydoesit - 4 days ago
  • 33" with hint from Klaus
       - Bassam - 4 days ago