A Guide to
Twisting Puzzles -- just published e-book, $10
Pyraminx in 30 Moves A free excerpt from A Guide To Twisting Puzzles
Solving and Composing
Excerpts from an upcoming guide:
Finding Cryptarithms via Computer Search
The First Cryptarithm Ever Published?
Triple-Key Multiplication and Other Cryptarithms
Dissected Dominoes -- Solving Domino Logic Puzzles
Grid Logic Puzzles
This page was revised on January 22, 2017. All contents copyright ©2008-2017 by Michael Keller. All rights reserved.