puzzle

Quoted: The infinite series diverges, meaning that its sequence of partial sums, (1, −1, 2, −2, …), does not tend towards any finite limit. Equivalently, one says that 1 − 2 + 3 − 4 + … lacks a sum.
...
Nonetheless, in the mid-18th century, Leonhard Euler wrote what he admitted to be a paradoxical equation:
1 - 2 + 3 - 4 + ... = 1/4

Quoted: Pavel Curtis is perhaps best known as the creator of the online world LambdaMOO, but he's been collecting mechanical puzzles for as long as he can remember, and has been designing new ones since 1999. Many of the designs on sale here have been featured over the years at the exclusive International Puzzle Party.

As a day job, Pavel works as a software architect at Microsoft.

Two surprises-

Dave Schappell (Teach Street) authors a "reader blog" at the Seattle PI).

He covered Roy Leban's Puzzazz web site (started at the Google AppEngine Hack-a-thon this summer).

Roy's new puzzle-a-day site.

Quoted: Puzzazz provides a quick, fun puzzle of the day each and every day. Invite your friends for friendly competition. Whether you're a casual puzzler or a serious puzzle addict, Puzzazz can fill the bill.

Zach's greatly improved the look of this sample app - and now the Save dialog comes up when you try to create a save (you need to fill in username, password, and email address to create an account).

http://www.google.com/search?ie=UTF-8&oe=UTF-8&sourceid=navclient&gfns=1&q=triangle+puzzles
http://www.google.com/search?hl=en&client=firefox-a&rls=org.mozilla:en-US:official&hs=qkx&q=toothpick+puzzles&start=10&sa=N
1) http://www.madras.fife.sch.uk/maths/toothpickworld/index.html
43 puzzles.
2) 7 direct images
http://www.jimloy.com/puzz/match.htm
3) in words (story problem)
http://209.85.141.104/search?q=cache:WSFKYCNmxNMJ:www.mnstate.edu/peil/M416/Manual/Toothpick.doc+toothpick+puzzles&hl=en&ct=clnk&cd=10&gl=us&client=firefox-a
4) Links to 11 and a history section
http://www.jokelibrary.net/yNonJokes/BrainTeasers05.html
Also this one is somewhat interactive. Can do it on the screen.
5) shortest straw probability
http://www.unipuzzle.com/Puzzles/4PToothpickChallenge/
6) Puzzle books
"The Moscow Puzzles - 359 Mathematical Recreations" by Boris Kordemskii,
"Creative Puzzles of the World" by Pieter van Delft and Jack Botermans
http://www.newton.dep.anl.gov/newton/askasci/1995/math/MATH003.HTM
7) The Math Forum @ Drexel (redundant?)
http://www.teachingk-8.com/archives/integrating_math_in_your_classroom/toothpick_puzzlers_by_michael_naylor.html
8) Web applet to move toothpicks
http://www.mste.uiuc.edu/java/michael/toothpick2/toothpick2.html
9) another book
http://www.mste.uiuc.edu/java/michael/toothpick2/toothpick2.html
http://www.lulu.com/content/1325964
10) weird pbs link
http://www.pbs.org/safarchive/4_class/45_pguides/pguide_903/4493_figure.html
11) http://www.seed.slb.com/en/scictr/lab/math/nov07.htm
12) http://www.ahapuzzles.com/creative_thinking_2.htm
an alphameric
13)
Gotta go: Results 81 - 90 of about 99,200
http://www.google.com/search?hl=en&client=firefox-a&rls=org.mozilla:en-US:official&q=toothpick+puzzles&start=80&sa=N

Return to the runway with Jojo and Rosalind in Jojo's Fashion Show 2: Las Cruces. Make stylish outfits for female and
male models as you showcase your fashion sense on runways from L.A. to Berlin. Then capture great looks in new fashion
photo shoots. Last season Jojo Cruz came out of retirement to take the fashion world by storm. With the help of her
daughter Rosalind, Jojo used her impeccable eye for matching outfits to brighten runways around the world with their new
fashion line, Las Cruces.

I've been thinking about explicit logic strategies for my solver - this site has some explanations I haven't seen before (X-Wing) and (Sword-Fish) - though I've used the former in manual solves.

Quoted: Sudoku Solver by Scanraid Ltd. Shows the logic behind solving Sudoku square by square.