Welcome to the home of Str8ts Caution!
Print Version
Str8ts Explained
Play Here...
Android & Apple Apps
Our Service
Str8ts for iOS and Android
Order Str8ts Book 2
Order Now!
1 to 25 - on the iPhone
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!

Latest threads are now at the top.
In addition, 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

Your Name or Handle

Your comment or question

Enter these lettersarrow

Please keep your comments relevant to this article.
To state your solve time use the smaller form at the top right of this page.

Line breaks and paragraphs are automatically converted ? no need to use <p> or <br> tags.

No full solutions please!


Reply to this post
A short SI: If AB9 and A89=8/9 then A6=7, B6=8, B9=9, reducing A8 to 5/9 wich is a large gap, eliminates 5 from B8 and leaves a single 5 in B2.


Although I need a chain towards the end, I like this puzzle. And maybe, the community will again find a better solution than mine.


by: c

my first apprach: an easy chain to define G3 at the beginning and a UR.
I shall try again later.


by: Harm

@c: G3 can be solved via Setti.


by: Christoph

the post of 04:10 was mine. Sorry.
I had a new trial:
The only possibility to avoid a UR in E9 is A9= x and B9 = y.
This solves this nice puzzle with two x-wings. No chain.


by: Tati

Nice puzzle, no chain needed. (UR, setti, wings.) Thanks!


by: Ben


I wasn't able to solve AB9 to avoid a UR.

I could narrow E9 to 1 or 9 - I eliminated the 2 by reducing HJ9 to 123.
But I am still left with two alternatives:
- if AB9=89 - it would be 1
- if HJ9=12 - it would be 9

I needed a small chain to settle AB9.


by: kmr

same for me. I liked it very much but needed a chain to decide on column 9.


by: Christoph

@Ben, @kmr:
my way was : H9 cannot be 4 (leaves E9=12 , which is not unique).
Thus my conclusion was AB9 must be 43.
But I realize now that it could also have been 89.
Thus my way is based on a lucky failure. Sorry about that.


by: pets

I could clear G3 with setti 2. After that I could exclude 5 from B9, as this would lead to 5s in column 8&9 and a setti violation. But that still left me with 3/8/9 in B9 and a chain. Still curious if there is a chainless way.
Thank you, hoke!


by: hoke

Add to this thread
There are further eliminations, but they do not solve the puzzle: 2 in H56 because of Xwing 2, 3 in CD2 because of UR in AB12, 1 in B2 because of contradiction in CD2, 3 in B3 because of ywing BC23.




by: hone

Thanx morl. Very tricky. Two UR preventions and a small SI needed.


by: Harm

For me this was very demanding. I had to use the X-Argument until the end. I needed one UR, wings and some Settis.


by: pax

A wonderful puzzle, as the one of home.


by: pax

Add to this thread
I don't like auto correction, but it often helps. The second time that I called Hone home...sorry for that.




by: ghw


It's how I like it.


by: Christoph

very nice, hone. lots of various wings, besides standard tools.


by: Harm

Thank you, hone. I needed very careful work to see the tools needed to solve.


by: pets

Add to this thread
Thank you, hone!
As my wing-spotting abilities are rather poor, this was tough work for me: But finally it solved!


I used a UR, and at the end a SI to find B4 and to solve this nice puzzle.


by: kolumbus

yes, nice puzzle. I didn't need UR, just wings and setti, and at the end a micro chain (wrong number on A1 immediately leads to a contradiction on D1 or D2)


by: hp

very clever Kolumbus,didnt see that; stared minutes on the board without finding an easy way out for the last few cells


by: morl

A mini XY-Chain D2-A2-A7-B7 solves B2 and the puzzle. Nice.


by: Andrejs

Add to this thread
To finish solving I notice that 9 is one of the sure digits in row A (9 must appear in A12 or A789). Thus we got an X wing with 9 on rows A and C which solve remaining 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

Boast or Rant!
Tell everyone if you solved this puzzle, how long it took or if you gave up.
Name or handle:

including time to solve (or not :)

For questions or discussion, please use the main comment form.
  • 28 pure logic. Fun puzzle!
       - puh - 17 minutes ago
  • 39min; settis helped
       - Hildi - 1 day ago
  • 39min; settis helped
       - Hildi - 1 day ago
  • took me 35' and a guess on A1 - not satisfied. did I miss "simple" things?
       - joeB - 1 day ago
  • 34 min. - very nice one :); used a lot of setttis
       - Nessie - 1 day ago
  • Wow. I had to play through an assumption that luckily played out.
       - Fleurette - 2 days ago
  • It took a lot of time to solve the puzzle, but I use only basic tools.
       - Andrejs - 2 days ago
  • couldn`t do it Sunday or yesterday, today it was so clear how to proceed. Nice puzzle
       - easydoesit - 2 days ago
  • i was about to solve it, but this question deleted all my attempts to solute it
       - alf - 3 days ago
  • what is a setti and what is a chain?
       - alf - 3 days ago
  • war ganz schön schwer
       - wjanet - 3 days ago
  • a real 5*
       - bsz - 3 days ago
  • 21 min.
       - Katjulik - 3 days ago
  • 1:10 - really had to struggle at the end
       - selecti - 3 days ago
  • 44 min, lots of this and that, very nice one
       - Boerny - 3 days ago
  • 44 min
       - Kurt - 4 days ago
  • A few settis and then a chain.
       - mparmen - 4 days ago
  • 47 min. Nice one.
       - TM - 4 days ago
  • 55' Settis and some wings and fishes
       - ThomasF - 4 days ago
  • settis and logic
       - Benny_42 - 4 days ago
  • 35 min
       - 7iron - 4 days ago
  • 41 min, settis
       - Torsten&Irina - 4 days ago
  • 27 min - logic and settis - NICE
       - Stef - 4 days ago
  • 1'24'' Interesting one, kind of wasn't clear until the end
       - MoSeS - 4 days ago
  • CE, settis, small chain in the end. Nice!
       - Martinus - 4 days ago
  • 33 min. Nice one with lots of settis...
       - LK - 4 days ago
  • 1h18, while planning a journey.
       - abracadabra - 4 days ago
  • 38' No guessing just setti, fishes and logic of course.
       - confusedbynumbers - 4 days ago
  • 28 min, very nice one, many settis, one x-wing and at the end a chain.
       - Nessi - 4 days ago
  • 15 min, just BCA needed
       - Loser - 4 days ago