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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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by:Santa Klaus

 

is.gd/2018_11_days_left_str8t

 

by: morl

 
 
Hi Santa Klaus,
i think i remember this one. maybe it is the 11-days-left from last year?

 

by: Christoph

 
 
Anyhow, I used a promising (lucky) check to solve it straight forward. I did not find a reasonable contadiction chain.


 

by: jgrab

 
 
I had to try AB5 hi/lo. Didn't see a good solution path.

 

by: Christoph

 
 
@jgrab:
This was my approach, too.

@morl:
I do not object to be confronted with earlier puzzles, modifeid or not, provided they have been offered some reasonable longer time ago.

 

by: Jan

 
 
...but even making a choice for high/low in column 5 gets me nowhere!

 

by: Christoph

 
 
Jan, the real question is : hi/lo between A5 and B5, respectively A5 and A4! (large gaps there).

 

by: Fab

 
 
low gets me to the solution, after several SIs. High doesnt lead me anywhere though, no visible contradiction.

 

by: Jan

 
 
Just so: Even with the low selection in AB5, using the head chain / SI that solves D1 and making as much use as possible of the UR in the lower right (which makes 3 a must in EFG8) doesn't solve. You then get a contradiction chain on one candidate in D2 and the other solves with the help of an x-wing, but all that is rather unsatisfactory...

 

by: Santa Klaus

 
 
Hi morl,

seems i got a little confused with my notes, which puzzles i have published and which not.

you're right, this one is a duplicate, but this time not on purpose.

 

by: pax

Add to this thread
 
A nice challenge, but I also didn't find a contradiction (head) chain with AB5 high, only (too) late it didn't solve. Making the low choice however provides a solution path solvable with head chains, very nice.

by:Santa Stefan

 

is.gd/2018_12_days_left_str8t


 

by: jgrab

 
 
Thanks. Not so easy Setti calculations, after not so easy wing calculations.

 

by: Jan

 
 
Delightful puzzle, solves nicely once you find the key wing combination!

 

by: Christoph

 
 
excellent challenge, Stefan.
Key for me was a SI rows AD to define the position of the candidates 1 in there.

 

by: Fab

 
 
I nicely used a lot of the toolbox. CE and UR gets a long way, then some wings and a SI give the final blow.

 

by: Jan

 
 
You don't need an SI or UR for this puzzle. There is an x-wing and a 3-wing on two different digits, with AD1 part of both. This results in an elimination that is key to the solution.

 

by: Berny

 
 
@Jan:
I can't follow your steps... After the initial CE A1 and D1 are soon reduced to 14 both because of BCA 4 and xwing 1.
Then I have still the xwing on 1 and a 3wing on 4 - but none of them lead to further eliminations (as BCA 4 and an xwing on 4 did before). A xwing on 5 clears a bit more, but then I had to use the same SI as Christoph probably on the 1 in D8.

 

by: kür

 
 
Great puzzle, very challenging, thank you!

 

by: Ben

 
 
Berny,

I also used a 4-wing on 7, which eliminates one of the 1's.

 

by: Berny

 
 
@Ben:
Thanks! Yeah, that's it. Didn't realize that 7 is a must in row E. The 4wing has the same result as the SI.

 

by: Jan

 
 
Ben was there first...the interesting thing is that with the constellation in the three cells in row E, both 6 and 7 are a must!

 

by: aw

Add to this thread
 
After lots of Settis the final step I needed was the unique triangle in the lower left solving H1 - the rest was easy.

by:Santa Klaus

 

is.gd/2018_13_days_left_str8t

 

by: jgrab

 
 
Thanks again, Santa Klaus! Some CE, and I used UR considerations and some implicite wings to solve w/o chains.

 

by: pets

 
 
Thank you, Santa! Interesting SI considerations - very nice!

 

by: ghw

 
 
Thanks Santa Klaus,

might it be, that I have this seen (and solved) a few years ago?

 

by: ThomasF

 
 
thanks Klaus, CE, URs and finally the right Setti, but it took me some time

 

by: Fab

 
 
Thanks! CE and UR to begin, then it took me time (and an error) to find the unlocking Fish and SIs.

 

by: Santa Klaus

 
 
hohoho ghw,

i'm impressed. thought i can get away with it, but damn you're right, i did some recycling (and, to be honest, not for the first time).

 

by: Bansalsaab

 
 
@ghw unbelievable memory. For me puzzle is new in few weeks and wont remember if I have done it in past.

 

by: Jan

Add to this thread
 
This one has me baffled...I have five solved cells and the hidden triple...what next?

by:Santa Stefan

 

is.gd/2018_14_days_left_Xstr8t

X Puzzle


 

by: pets

 
 
Evolves slowly but steady, just perfect - thank you, Stefan!

 

by: Jan

 
 
First signigicant eliminations on the diagonals, some wings and eliminations, and the diagonals again - very nice!

 

by: jgrab

 
 
Thanks! This is real X-power.

 

by: Fab

 
 
Nice indeed, it unlocks very gradually making the pleasure last, and you need the X power until the very end. Thanks!

 

by: Christoph

 
 
Excellent X-puzzle, Stefan. The whole toolbox needed.

 

by: ThomasF

 
 
Thanks Stefan, a hidden pair, singles, settis, wings and the diagonals

 

by: Jonas

 
 
Need help or a hint. Jan, what do you mean by eliminations on the "diagonals"? Stuck on the gradual unlocking ;)

 

by: Jan

Add to this thread
 
First question: This puzzle is designed as an "upgrade" to a standard Str8ts, as it additionaly demands that the two diagonals - i.e., the nine cells A1..B2..H8..J9 and the analogous A9...J1 - fulfill the rules. This makes additional eliminations possible. Are you aware of that?

If not, try that 8-). If yes, let us know precisely where you are stuck at the moment...


by:CL

Reply to this post
Nice.

Many URs for me, and also some not too common UR patterns (J23, CD67).

by:Santa Klaus

 

is.gd/2018_15_days_left_str8t

 

by: pax

 
 
Another very nice one, for more systematic guys probably solvable with standard tools, I used an UR consideration.

 

by: Astrid

 
 
three fishes were my essential moves.
Thank you very much, Santa!

 

by: kolumbus

 
 
nice, thx, Santa Klaus! CE in row E, 1 starfish, 1 x-wing, singles ...

 

by: Frank

 
 
Klaus and Stefan thank you very much for 10 nice and chainless puzzles which had an attractive level of difficulty.
For the last one a yellifish and singles are enough.

 

by: ThomasF

 
 
thanks Klaus, one large fish and standard tools

 

by: jgrab

 
 
Thanks! Took me a while to see the fishes.

 

by: hp

 
 
nice, not so easy to spot the relevant fishes


Klaus and Stefan thank you very much for your daily Christmas Gifts, this is a superb tradition

 

by: morl

 
 
There are some fishes and a UR which is not easy to see. Thank you for this chainless piece.

 

by: Martinus

 
 
Very nice. Thank you.

 

by: Jan

 
 
Indeed very nice - the hard-to-see 4-wing is enough to solve (together with some singles).

 

by: Fab

Add to this thread
 
Nice. Several fishes. I got stuck at a point and started to chain until I realised I had missed a CE in a column, which unlocked the rest.



Article created on 27-June-2010.
This page was last modified on 17-April-2011.
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  • A nice one. Settis and concentration. Second attempt.
       - bsz - 2 days ago
  • I agree with everyone else: what a pleasant puzzle!
       - Fleurette - 2 days ago
  • A perfect one!
       - hiitsme - 2 days ago
  • 12 min.
       - Katjulik - 3 days ago
  • 20', settis indeed
       - tam - 3 days ago
  • 46 min, with settis
       - 7iron - 4 days ago
  • enjoyable 16 minutes
       - Stadtlicht - 4 days ago
  • 22' on first try, needed settis
       - joeB - 4 days ago
  • 17:00 settis #8 & #4 is the key
       - joe reitzl - 4 days ago
  • Enjoyable puzzle. My key was the hidden required digit in column 6.
       - Andrejs - 4 days ago
  • 9' on the second attempt - made an early incorrect elimination on the first one 8-(
       - Jan - 4 days ago
  • 20 min, very nice one
       - Boerny - 4 days ago
  • 18min
       - humpti dumpti - 5 days ago
  • 26'- excellent puzzle for me. Indeed Setties did it all!
       - Carpat - 5 days ago
  • 16 mins, nice one!
       - Alex - 5 days ago
  • 15 min - nice and easy
       - Stef - 5 days ago
  • 18:30 - lots of settis
       - mv - 5 days ago
  • 22'. Settis and x wing were the key. Lovely
       - Emma - 5 days ago
  • 52 min war nicht zu schwer
       - wjanet - 5 days ago
  • Settis and an X-wing
       - Fab - 5 days ago
  • 14 min-easy..., the right level for bears in hibernation
       - effchen - 5 days ago
  • 15 min - Settis did the trick, nice one
       - Susan - 5 days ago
  • Yes! 3 Setti, 1 x-wing. ♫♪
       - A B Traherne - 5 days ago
  • easy
       - Sabine - 5 days ago
  • 24' easy
       - Torsten&Irina - 5 days ago
  • 22' nice
       - ThomasF - 5 days ago
  • 11 min; Setti after Setti
       - jgrab - 5 days ago
  • Pure logic, some settis and a bunch of "watch for singles" have been the key - a relaxing and enjoyable one! Thanks!
       - Korbinian Bär - 5 days ago
  • excellent Setti exercise
       - mparmen - 5 days ago
  • not as easy as some gays tell
       - ich - 5 days ago