Introduction

This book is like 210 individual puzzles while at the same time it is one very large puzzle.

Things Needed to Play This Game

1. A handheld calculator.

2. A pencil with a good eraser.

3. A good amount of patience.

4. At least some interest in puzzles.

Age Requirement

Good for any age if you can add and subtract and use a calculator.

To try this without a calculator would require reams of scrap paper and lots of time.