100 Geometric Games His work indicates a technical

His work indicates a technical mastery that now seems incredible when one bears in mind the vicissitudes of collodion applications in the field

but as close to the meaning of the original text as possible

Ralph Adams Cram

The plants are arranged systematically by families

100 Geometric Games His work indicates a technicalThere are three loops in a tangle of rope. How many are independent, and how many are interlocked? Two knights stand on a chessboard. How many other knights must you add so that each square is occupied or threatened by a knight? Among six seemingly identical drawings of mandalas, each rotated by multiples of 60 degrees, one is different. Which is it, and why? Challenge yourself with these mind benders, brainteasers, and puzzles. Each of them has been