EveryMemoryCoding & Decoding Quiz
Crack the code: if CAT is 3-1-20, what is DOG? Eight letter-number coding puzzles with instant scoring. Free, in your browser, no sign-up.
⚡ Quick answer
Coding & Decoding is a free, 8-question quiz of letter-number puzzles, each with one exact, correct answer. Letters map to numbers by a stated rule (A=1, B=2, and so on), so you can always check the logic. It is for fun, not a real IQ test.
If CAT is written as 3-1-20, then DOG must be... This quiz is eight short coding and decoding puzzles where letters map to numbers by a simple, stated rule. Crack the pattern and pick the answer in the box above.
It is free, needs no sign-up, and the answers are exact and verifiable. It is a playful logic workout, not an IQ or medical test.
How it works
Each puzzle states the rule, then asks you to apply it.
- Eight short coding/decoding questions.
- Most use the simple A=1, B=2 ... Z=26 alphabet position.
- Pick the one correct answer to see if you nailed it.
- Get a score out of 8 and a fun title to share.
Your score stays in your browser.
What it trains
It exercises pattern spotting and careful number work - the core of code puzzles.
- Mapping symbols to a rule.
- Holding a sequence in mind while you convert it.
- Spotting reversals, shifts, and simple sums.
These show up in everything from crosswords to coding interviews, so they are good fun to practise.
The honest way to read your score
A high score just means you locked onto the rules quickly today - not that you have a certain IQ. The fair comparison is your own best score. Take it again to beat it.
Want more brain training? Try our number memory test or explore more brain games online.
⚠ When to talk to a professional
This quiz is for fun and self-reflection only. It is not an IQ or intelligence test, does not diagnose anything, and does not measure any medical trait. Enjoy it as a playful logic challenge.
