Classic Brainteasers
Matchstick Puzzle? I found it http://www.mindchallenger.com which is a collection of puzzles and classic and modern puzzles. See all matches for this question http://www.mindchallenger.com/p39.html How to add five to the current number of matches for New? You should be able to describe the algorithm. Between the first two, between the third and fourth, and three [...]