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Aremu David: From Hemophilia Camp Friendship to Digital Innovation in Tic Tac Toe
Aremu David/LinkedIn
Sep 5, 2026, 14:36

Aremu David: From Hemophilia Camp Friendship to Digital Innovation in Tic Tac Toe

Aremu David, Software Engineer at Bloom Digital Media Ltd, shared a post on LinkedIn:

“At Camp Braveheart, a hemophilia camp, I met someone who loved X and O as much as I did — and was better at it than me.

We played all week.

Then camp ended and we went home, to opposite ends of the country.

That’s why I built Nine.

It’s X and O for the web.

Open a link and you’re playing: no install, no signup, no account.

One person starts a game, the other scans the code, and you’re in a match in about three seconds.

When nobody’s around, there’s an opponent that adapts to how you actually play – rather than being unbeatable, or quietly letting you win.

It works offline, and it keeps your games even if you never make an account.

Play it.

For the engineers: TypeScript end to end, with the same rules engine running in the browser and on the server so a move can’t be faked.

Tic-tac-toe has only 5,478 reachable positions, so the whole game is solved in memory at startup in about 7ms — which meant shipping no lookup tables at all, and keeping the critical path under 95KB.”

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Aremu David Camp Braveheart Health Hematology Hemostasis Hemostasis News Hemostasis Today Medicine Nine Tic-tac-toe X and O
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