The Puzzle Journal

Stories, strategy, and the science of getting smarter

Notes on puzzles and the brains that love them, from our team and the wider KenKen community. New pieces most weeks.

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Elena Vasquez (Contributor)Nov 8, 20255 min read

KenKen in the Classroom: Why Teachers Keep Coming Back

KenKen in the classroom is a no-prep, self-differentiating way to build number sense and perseverance. Here is why teachers keep coming back to these math puzzles for students.

Education
Dana ReyesOct 15, 20256 min read

A Short History of Number Puzzles: From Latin Squares to KenKen

The real history of number puzzles, traced date by date: from the ancient magic square to Euler's latin square, the 1979 Number Place that became sudoku, and the arrival of KenKen.

History
Sam Okafor (Contributor)Oct 2, 20256 min read

How to Improve Your Focus and Concentration

How to improve concentration and focus for real: what attention is, why single-tasking beats multitasking, and the sleep, breaks, and daily habits that build better concentration.

Brain Health
Dr. Nora Bennett (Contributor)Sep 24, 20256 min read

Why Your Brain Loves the 'Aha' Moment

The aha moment, or eureka effect, is the sudden flash when a puzzle clicks. Here is the neuroscience of why puzzles feel good and why solving it yourself beats being told the answer.

Brain Health
Sam Okafor (Contributor)Sep 3, 20255 min read

The Five-Minute Habit: What a Daily Puzzle Does for Your Focus

A daily puzzle habit is a five-minute focus ritual you can actually keep. Here is what a small morning routine puzzle does for your attention, and how to make it stick.

Brain Health
Elena Vasquez (Contributor)Aug 19, 20256 min read

KenKen for Kids: Turning Math Practice Into Play

KenKen for kids turns math practice into a game. A parent's guide to grid sizes by age, tips for solving together, and why letting kids struggle builds real confidence.

Education

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