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Puzzle 55.  DOUBLET

Doublet is a game Lewis Carroll, author of Alice in Wonderland, invented.  The object of the game DOUBLET is to change a word into another word by successively changing only one letter at the time to form an intermediate valid word.   For example, the following process changes the word HIT to OUT:

H I T
H A T
O A T
O U T

Using similar process, change the words

 

W A R M

TO

C O L D

This puzzle is INTERACTIVE in Java-enabled browsers.  

Start the puzzle by clicking on the first row of the upper array.  Form a new word by selecting a letter on the lower alphabet array, followed by clicking on the a cell on the upper array. 

  Solution

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Bits and Beyond...

Mathematicians have tried in vain to this day to discover some order in the sequence of prime numbers, and we have reason to believe that it is a mystery into which the human mind will never penetrate.

                         Leonhard Euler

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