The RECTANGLE
$7.95
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A rectangle is a parallelogram with right angles. Try proving it with our puzzle.
Collection "UNIQUE"
Unique is a collection of IQ brain teaser puzzles that are easy to pick up and impossible to put down! All it takes to win is a little coordination between the pieces. This fun family and party game that only looks like you can handle for minutes actually could take even hours.
Playing with IQ brain teasers from Doctor Puzzle can not only exercise your brain. It develops intelligence and improves problem-solving skills. It Relieves pressure relaxes your mood, and brings you joy. Simple but challenging. Tricky but fun and great for your brain training!
