All real life mathematics is problem solving. And all those fascinated by puzzles are problem solvers at heart. But thinking mathematically is a skill we have to learn and one which it is easy to forget.
Recreational mathematicians and students can practise problem solving in different ways. In this book solving puzzles is practised in a different way from most books they will have seen before:
# Readers get no clues to what the puzzle is about
# They may take hours or even days to work out what is being asked of them
# Even after that, some problems may have no solution...