Str8ts on iOS and Android   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!


X puzzle


by: Pets

Great fun - thanks a lot!
Standard tools, CE and an UR in G5 - J7 solved for me.


by: jgrab

Thanks. Very nice and challenging (almost one hour). CE, 3x3-wings, a naked triple. And some X-based eliminations. A little UR appears to be unnecessary.


by: hago

Stefan, please can you explain the main rules of an X puzzle; thank you!


by: kolumbus

very nice, thank you, Stefan


by: kolumbus

@hago: for the 9-field-diagonals A1-J9 and A9-J1 the same rules are valid as for columns and rows: subsequent digits in every compartment, and every digit only once.


by: Harm

Thank you Stefan, that was challenging pure fun without any chain.


by: kmr

Thank you, very nice, challenging, just a great puzzle.


by: hago

@kolumbus: Thank you very much!


by: Jan

Add to this thread
Nice one! The X constraint breaks the symmetry in J1, then several wings and CE, and at the end the X contraint resolves what would otherwise be a UR - this seems to be a recurring feature in this kind of puzzle.


Hi there. Can you explain me, what settis means? Thanks a lot


by: Butcher

There is a good source of information here:
h t t p s : / /


by: Zogl

Add to this thread
Thank you very much. I will watch out there



by: jgrab

Thanks; an orgy of wings and higher-order creatures.


by: Jan

Yes, I see a lot of wings here, but am stuck at eight solved cells. One candidate in J3 quickly leads to the solution, disproving the other appears to be hard. Suggestions...?


by: aw

My key was the conditional setti on 4: 4 in col 2 if and only if 4 in row H (and the only candidate in H is H9). But 4 in J is either in J2 or in J9 - thus 4 in 2A-C or 4 in 9C-F would lead to a contradiction. That was enough to start things rolling.


by: aw

... after setti 3,5,6,7 and wings on 6,5,7,3 and 2, of course ...


by: Jan

OK, had missed the hidden pair in a column that solves another two cells and turns on a large wing which then solves. Duh, quite something!


by: morl

A hidden pair in col 1 and a 5-fish will help.

This is actually a column 5-fish in ABDFG34567.


by: morl

Oops, cross posting...


by: Jan

aw: Interesting observation! However, I was missing the hidden pair which is required for both your observation and my large wing, both of which incidentally having the exact same eliminations of candidates as a consequence.


by: aw

Add to this thread
@morl, Jan: Indeed, after seven other fishes of order up to 4 I probably was tired and didn't see it this way - so I pulled the net around the big fish ;-)


Reply to this post
By the way, the weekly is easily solvable without the clues in B1 and J4.



by: Astrid

Entertaining! Settis, SI, few x-wings followed by an UR.


by: kolumbus

slightly more difficult than the weekly, I needed an UR argument too; thank you, morl


by: pax

Thank you morl, Didn't see the UR, used a head chain instead.


by: jgrab

Very nice, thanks! After initial Settis, the UR upper left corner helps a lot.


by: Susan

Quite difficult for me, but didn't Need an UR. Didn't see it anyway. Settis, SI and x-wings.


by: Jan

Add to this thread
Susan: Except for one candidate in B3, AB1234 contain (6789) - this would be unresoleable from the rest of the puzzle. With that candidate, the puzzle solves easily after some settis and wings.

Can't see a useful head chain/SI, though.

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.
  • Festival of Settis, but it took me forever
       - Fleurette - 1 day ago
  • Solved with standard technique (no chains).
       - Andrejs - 1 day ago
  • 28 min - very nice
       - Stef - 2 days ago
  • 12 min: nice setti-workout
       - JimKnopf - 2 days ago
  • 2nd try,lots of settis. Very nice.
       - juehe - 2 days ago
  • 25 min, just settis, very nice
       - easydoesit - 2 days ago
  • 11' - on the 2nd try with sover and Setti
       - Carpat - 2 days ago
  • 19', settis indeed
       - tam - 2 days ago
  • Manually without candidates, about an hour - don't know how you can possibly do it in 8 min.! 8-)
       - Jan - 2 days ago
  • 3rd try 30min. Settis settis settis... Uff
       - Gregor - 2 days ago
  • could be handled even without any settis, but took me 46min
       - fred - 2 days ago
  • 42 min
       - Kurt - 2 days ago
  • 18 mins, settis
       - Alex - 3 days ago
  • 11 minutes. wondering if i cheated somewhere because this seems so much faster than everyone else.
       - nina - 3 days ago
  • Many settis needed.
       - mparmen - 3 days ago
  • 33 min. Setti, Setti, Setti.
       - D-Day - 3 days ago
  • 28 min. nice, many setties
       - Boerny - 3 days ago
  • Never ever we had such a lovely setti block-buster
       - Wosy - 3 days ago
  • Settis and attention. 30 min.
       - jgrab - 3 days ago
  • 20 min
       - Loser - 3 days ago
  • 41 min settis, settis und immer wieder settis
       - wjanet - 3 days ago
  • Yep, almost only setti's. And a 3x3 UR in the upper left hand corner which helped (I think). Nice! 24'
       - Marc - 3 days ago
  • 24' - settis and even more settis
       - selecti - 3 days ago
  • a noce one.
       - 26' - 3 days ago
  • settis y mas settis pero no resultado.
       - puzzledone - 3 days ago
  • 29'
       - dots - 3 days ago
  • 33 min - only settis, but really many settis
       - Michael - 3 days ago
  • 19 min. Second try. Only settis
       - Martin - 3 days ago
  • 20 min - second attempt
       - Susan - 3 days ago
  • 43:43; cold temperatures, warm feelings.
       - abracadabra - 3 days ago