Parity Gears · The Gear Chain
15 gears in a row. Spin the first — which way does the last one turn?
About the Puzzle
15 gears in a row. Spin the first — which way does the last one turn?
4 Puzzles
The Gear Chain
The Gear Workshop
The Gear Ring
The Gear Train
Frequently asked questions
Parity Gears is tagged for Grades 3-9 — puzzles within it get harder as your child improves.
4 Parity Gears puzzles, each a fresh layout of the same rules.
No — Parity Gears plays directly in the browser, right on this page. No login, no download.
Present a real-world scenario and a question that can't be solved by direct calculation — the child has to find the underlying structure or trick (e.g. realizing every handshake gets counted twice). Builds mathematical insight — seeing why something must be true — rather than computation speed.
No — every Parity Gears puzzle is free to play, no sign-up needed.