Mastermind
Crack the hidden sequence of symbols using black and white feedback pegs. Every guess is an experiment in pure analytical deduction.
How to Play in 3 Simple Steps
Master the rules in seconds—designed for intuitive touch and mouse control.
Compose Your Code Hypothesis
Select colored geometric symbols from the bottom palette to fill all slots in your current guess row.
Read the Feedback Pegs
A solid dark peg means a symbol is the right shape in the exact right position. An outlined white peg means the symbol exists in the code, but in a different slot.
Eliminate Possibilities & Crack the Secret
Combine clues from previous rows to deduce the exact secret sequence before running out of attempts.
Cognitive & Brain Training Benefits
How regular sessions of this puzzle strengthen specific neural pathways and executive functions.
Scientific Hypothesis Testing
Each row acts as a controlled experiment where you formulate a hypothesis and interpret multi-variable feedback.
Combinatorial Logic
Cross-referencing multiple rows simultaneously builds high-level relational reasoning.
Accessible Shape + Color Dual Coding
Every peg pairs a distinct geometric symbol (◆, ●, ▲, ★, ■, ⬟) with color, ensuring effortless readability for all players.
Pro Strategies & Deduction Tips
Techniques used by experienced solvers to clear boards faster and maintain long streaks.
