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Classic Mastermind code-breaking game. The computer picks a secret color code; you guess row by row. Black pegs = right color and position; white pegs = right color, wrong position.
Execution
Fill in the form, run the tool, and review the result in one place.
Samples
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Ready for a run
Tool usage guide
Play the classic Mastermind code-breaking game directly in your browser. Challenge your logical deduction skills as you guess the computer's secret color code row by row, using black pegs for exact matches and white pegs for partial matches.
Background
A user wants a balanced logic puzzle to test their deduction skills during a short break.
Problem
Finding a secret code from 6 colors across 4 slots with duplicate colors allowed.
How to use
Select the 'Standard' difficulty option and start guessing colors row by row, adjusting choices based on the black and white peg feedback.
difficulty: standardOutcome
The user cracks the code in 7 attempts using systematic elimination.
Background
A student is learning the rules of Mastermind and wants a simpler game without duplicate colors.
Problem
Learning the basic mechanics of peg feedback without the complexity of duplicate colors.
How to use
Choose the 'Easy' difficulty setting, which limits the game to 4 colors, 4 slots, and no duplicates across 12 tries.
A black peg means a color is correct and in the right position. A white peg means a color is correct but in the wrong position.
Yes, duplicate colors are allowed in Standard and Hard difficulties, but are disabled in Easy difficulty.
You get 12 attempts on Easy, 10 attempts on Standard, and 8 attempts on Hard difficulty.
No, the feedback pegs are displayed in no particular order to keep the deduction challenging.
You win by guessing the exact color code, resulting in all slots receiving black pegs before running out of tries.
difficulty: easyOutcome
The student successfully deduces the code in 5 tries and understands how black and white pegs correspond to their guesses.
Background
An experienced player wants a highly challenging deduction puzzle.
Problem
Cracking a complex 5-slot code drawn from 8 colors with duplicates allowed in only 8 attempts.
How to use
Select the 'Hard' difficulty option and carefully track color combinations and negative feedback to optimize every guess.
difficulty: hardOutcome
The player uses advanced elimination strategies to solve the code on their final attempt.