📖 How to Play & Rules – Mastermind (Codebreaker)
- The computer hides a secret code of 4 colored pegs. You have 8 attempts to deduce the exact colors and positions.
- Tap colors in the palette to fill your active row, then tap '✓ Check Row'.
- 🟢 Green Feedback Pin: A peg has the correct color AND is in the exact right position.
- ⚪ White Feedback Pin: A peg has a correct color, but is placed in the wrong slot.
💡 Strategy Tips & Tricks
- Toggle Duplicates OFF if you prefer a classic deduction puzzle where all 4 secret pegs are guaranteed to be distinct colors.
Free & 100% Local In-Browser Gameplay
This game runs 100% locally in your browser with zero server latency. No download, no account registration, and no app store installs required—fully optimized for mobile, tablet, and desktop with touch and keyboard controls.
❓ Frequently Asked Questions (FAQ)
Do the feedback pins correspond to specific peg positions?
No, just like the physical Mastermind board game, green pins count total exact matches and white pins count misplaced color matches.