A guided tour through our most beautiful and delightful puzzles. See more...
Explore beautiful, challenging, and delightful puzzles in a variety of mathematical areas: from logic to algebra to geometry to algorithms. Hundreds of “ah ha!” moments await you!
We'll unlock doors into deep and intriguing mathematics, with problems that stretch how you think about math and make you a stronger problem solver.
Deduce fact from fiction given assumptions and observations.
Slice up everything from chessboards to state voting districts.
Solve problems in reverse using the rules of arithmetic!
Can you slide, jump, and flip to transform one pattern into another?
Celebrate the surprising truths inherent to the mathematics of space.
These spatial puzzles are math problems in disguise!
From cubes to Klein bottles.
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