← All games
🔐

Mastermind — logical reasoning

💡Benefits

Mastermind trains deductive logic and planning — you analyse the clues and think through the next move. It builds executive function and problem-solving (Diamond, 2013).

🎮How to play

Guess the hidden colour/number code. After each try you are told how many items are in the right place — deduce the code logically.

📚Scientific sources

  1. Diamond (2013). Executive functions. Annual Review of Psychology, 64, 135–168. https://scholar.google.com/scholar?q=Executive+functions+Diamond+2013+Annual+Review+of+Psychology

Frequently asked questions

Yes, cracking the hidden code on MentalMath is completely free and needs no registration.
Deducing the code from the clues after each guess strengthens deductive logic and the ability to draw conclusions.
Recommended from age 8, since analysing the clues calls for slightly more mature reasoning.
Yes, choosing colours or digits and entering the code is easy on both phone and tablet.
A few times a week for 10-15 minutes noticeably sharpens logical deduction.
Start playing 🚀

Other games

🧮 See the mental arithmetic lessons too