EveryMemoryCode Breaker
Crack a hidden 3-digit code with pure logic. A free Mastermind-style deduction game you can play in your browser, no sign-up.
⚡ Quick answer
Code Breaker is a free, Mastermind-style logic game. You guess a hidden 3-digit code (digits 1 to 6, no repeats) and after each guess two kinds of dots show how close you are. It is a fun self-check of step-by-step reasoning, scored only against your own past results, not a medical or cognitive test.
Key takeaways
- Free Mastermind-style logic game you play in your browser, no sign-up
- Crack a hidden 3-digit code using filled and hollow feedback dots
- Tracks your fewest-guess solve on your own device, self-relative only
- A fun deduction workout, not a medical or cognitive test
Code Breaker is a quick deduction puzzle where a secret 3-digit code is hidden and your job is to crack it with logic. Play it above: compose a guess, submit, and read the feedback dots to narrow things down.
It is free, needs no sign-up, and your best solve (the fewest guesses you have ever needed) is saved on your own device so nothing leaves your browser.
How to play
The panel hides a secret code. Use the steppers to build a guess, then submit to get feedback.
- A filled dot means a digit is correct and in the right place
- A hollow dot means a digit is correct but in the wrong place
- Adjust the three digits (1 to 6, no repeats in the code) and submit again
- You have up to 8 guesses to crack it; fewest guesses wins
There is no account and no timer. Your best solve is saved on your device only.
What it trains
Code Breaker leans on deliberate, step-by-step thinking rather than speed.
- Logical deduction and elimination
- Holding partial information in working memory
- Hypothesis testing and revising a plan
Honestly, most of what you gain is skill at this specific game. It is a fun reasoning workout, not an IQ measure.
Tips to crack it faster
A good first guess gives you information you can build on.
- Start with three different digits to learn which ones are in play
- Use hollow dots to confirm a digit exists, then move it around to place it
- Keep a quick mental note of digits you have already ruled out
The honest way to read your score
Treat your fewest-guess solve as a personal best to beat, not a ranking against anyone else. Some codes are simply luckier than others, so look at your trend over many games.
If you enjoy this kind of careful thinking, try our working memory guide, or test your recall with the number memory test.
⚠ When to talk to a professional
Code Breaker is a casual puzzle for fun and self-comparison, not a medical or cognitive assessment; if you have real concerns about your memory or thinking, please speak with a qualified professional.
