The allure of the Cast Puzzle….
The Cast puzzles have both a challenge and a difficulty level element that wire puzzles, generally known as “disentanglement puzzles”, don’t have. People who try them experience refreshing stimulation as no force is necessary and this arouses their interest in solving them.
The Cast Puzzles offer an unlimited amount of mystery. Its collectability is also one of its appeals. Once you solve one, you will no doubt want to challenge yourself by solving more.
There are no answers in the set so as to allow you to solve the puzzles on your own and experience real fulfillment.

The Delta puzzle is formed by joining three separate pieces that mesh with each other.

It is the brain-child of Hong Kong native Kyoo Wong who, with the eye of an engineer, has worked on a number of cast puzzles.  While simpe in form, its geometry somehow challenges and stirs up our creativity.  The theme is the number three.