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01 · Full-stack developer

Logicore

A daily math puzzle. Guess the hidden equation, keep a streak, and play friends without spoiling today's answer.

Role
Full-stack developer
Built with
Next.JsReactTypeScriptTailwindCssMongoDB
logicore.olatoyan.com
Logicore screenshot

01The problem

I wanted a daily puzzle like Wordle, but for math. The catch: if you can share today's answer, or fudge your time, the whole thing falls apart the moment friends get involved.

02How it works

Every day you get an eight-character equation, worked out with BODMAS. Six tries. Tiles tell you what's right, what's close, and what's gone, the same way Wordle does, including when a number shows up twice.

The game checks your guesses on the server, not in your browser. That way the answer isn't sitting on your phone waiting to leak, and your time isn't whatever your device says it is.

Anyone can play today's puzzle without signing up. Make an account and your streak, stats and challenges follow you. Speed gets a reaction too: under thirty seconds is Lightning, under a minute is Sharp, and taking more than three minutes earns you a look.

03Decisions

The calls that shaped how it works, and why I made them.

  1. 01

    Your phone doesn't keep score

    The clock starts when you send the first real guess, not when you open the page. When you finish, the site ignores whatever time your browser reports and uses the time it recorded itself. Leave a tab open overnight and it still won't count as a miracle run.

  2. 02

    Friends don't get your puzzle

    If you're just visiting, everyone shares the same daily. If you have an account, you get your own equation, so sending a screenshot doesn't solve it for your friend. When you challenge someone, they play the exact puzzle you played, not theirs.

  3. 03

    No spoilers until you're done

    You only see how the rest of the world did after you finish. If you won yesterday, today's timer races that time. You get two streak freezes a month for a missed day, and you get one back if you use it and still lose.

04Where it landed

It's a full daily game now: practice, a puzzle archive, stats, a leaderboard, friend challenges, live duels, and a reminder if you haven't played.

Next project

Harbingr

Track subscriptions in naira and dollars, and get reminded before the charge hits.

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