Writing & experiments

Explaining the mathematics behind the software I build. Change an assumption, follow the calculation, and see what happens.

3 explorable notes
About 8 minutes to read them all
From 2 real projects
Maths Warriors and ContestKit
1 book, published
A board game design course, co-written for SIMCC

Explorable notes

Each note is short, and each one has something to play with. The illustrations show what you’ll find inside.

The book

Book · First edition, 2026 · SIMCC

A Beginner’s Guide to Board Games

Design, build, test and share a game of your own.

A full-colour course book that teaches secondary school students to design, build, test, and present a board game of their own. Every chapter works on one deliberately broken example game, Market Day, and fixes a little more of it.

Authors
Samputhy Khim and Henry Ong
Readers
Students aged 12–17, and their teachers
Structure
5 parts · 28 lessons · 261 pages
Inside
About 45,000 words · 64 figures · photocopiable worksheets
Look inside · 24 preview pages →

Format inspiration: Bartosz Ciechanowski’s interactive explanations.