MetaFilter posts tagged with math and puzzle

Cryptarithms

Upton O'Good — Wed, 03 Sep 2008 23:44:39 -0800

   MEFI
   META
+ ASKME
-------
 FILTER

Each letter corresponds to a number 0-9. The solution is unique. A cryptarithm (or alphametic) is a puzzle in which each digit of an equation is replaced by a different letter. One of the first, and best known, appeared in 1924:

  SEND
+ MORE
------
 MONEY

A collection of classic cryptarithms can be found here; some interesting extensions to the concept can be found here. And, if you'd like to make your own, the alphametic generator here and solver here may be of use.

Would you like to play a game?

Blazecock Pileon — Mon, 18 Feb 2008 00:29:28 -0800

Fun and games with mathematics and mathematical puzzles (e.g. heart basket, Rubik's Cube, Rubik's Magic, hypercubes, and more) in both English and (with yet more content in) German.

Math is congruent with fun!

cortex — Thu, 12 Apr 2007 11:51:31 -0800

You have spacial skills. Apply them in Building Houses 2, on mathsnet.net. Or freestyle in Building Houses 1. Or at night! Oh and also there's like a hundred more puzzles over there too. Some java required.

Who has the fish?

swift — Thu, 04 Aug 2005 15:22:41 -0800

Who has the fish? Einstein logic puzzle. If I can do it, you guys can.

64=65?

pyramid termite — Wed, 18 Aug 2004 05:42:23 -0800

64=65? there must be some kind of trick to this, right?

PuzzleFilter.

limitedpie — Wed, 11 Aug 2004 21:08:52 -0800

"WARNING!!! The puzzles on this site are very difficult, and most require the use of a good spreadsheet program in order to solve them. It will take many hours, perhaps days, to solve each puzzle..."

vacapinta — Thu, 06 Dec 2001 15:09:18 -0800

The Paso Doble is an eerie little puzzle game, something like a De Chirico painting come to life.
Oh yeah, a new Mersenne prime was discovered today by a 20-yr old.
Both links courtesy of mathpuzzle.com
(will i ever beat joseph devincentis?!)