MathematicsApril 14, 2026
Math puzzle: A disassembly job
Take apart the grid in this math puzzle
Stories by Heinrich Hemme
Heinrich Hemme is a physicist and a former university lecturer at FH Aachen–University of Applied Sciences in Germany.
MathematicsDecember 16, 2025
Math Puzzle: Wrangle the Rectangles
Sort out a rectangle tangle in this math puzzle
MathematicsOctober 14, 2025
Math Puzzle: Find the Time
Decode a confusing clock in this math puzzle
MathematicsMay 20, 2025
Math Puzzle: Measure the Star
Build a special set of dice in this math puzzle
MathematicsMarch 18, 2025
Math Puzzle: Finish the Cycle
Finish the cycle of numbers in this math puzzle
MathematicsFebruary 18, 2025
Math Puzzle: Follow the Calculator Clues
Decode the clues from a broken calculator in this math puzzle
MathematicsJanuary 21, 2025
Math Puzzle: Build a Square
Arrange pieces into a square in this math puzzle
MathematicsDecember 17, 2024
Math Puzzle: Move the Tower
Transport the disks in this math puzzle
MathematicsNovember 19, 2024
Math Puzzle: Find the Secret System
How are these numbers organized?
MathematicsJune 20, 2024
Math Puzzle: How Many Routes Can You Find?
Try to solve a traveling salesman’s directional dilemma