Game guide · LYGXJD
Know the goal in Mastermind
The example and rules describe the same game you can play above. Deduce a hidden four-colour code within ten guesses, using exact and misplaced feedback. The game area remains available above the explanation. The computer chooses four positions from six colours; repeated colours are allowed. Keep the goal in mind before your next move.
Four positions, six colours and ten guesses, with repeated colours allowed. This is an independently coded free colour-code puzzle, not an official branded edition.
Practice with a purpose
Use the controls beside the game rather than guessing the rules. Check guess records your attempt. Exact means correct colour and position; misplaced means correct colour in another position. Start a new round when you are ready to try again.
Your objective
The example and rules describe the same game you can play above. Deduce a hidden four-colour code within ten guesses, using exact and misplaced feedback.
How a round unfolds
- The computer chooses four positions from six colours; repeated colours are allowed.
- Select a code position and then choose a colour. Fill all four positions.
- Check guess records your attempt. Exact means correct colour and position; misplaced means correct colour in another position.
- Each secret peg can match only one guess peg. Use the feedback to narrow the next guess.
- Find all four exact positions to win. After ten unsuccessful guesses the secret code is revealed.
Keyboard and screen controls
Take a moment to check the current turn. Tap one of four positions, then a labelled colour button. Numbers identify colours as well as the swatches. Press Check guess only when all slots are filled. Try the rule on the board, then read the next instruction.
Work through an example
The board gives you the information needed for the next action. For secret 1,1,2,2 and guess 1,2,1,3, feedback is one exact and two misplaced. The extra 3 has no match. Start a new round when you are ready to try again.
Watch out for this
The example and rules describe the same game you can play above. Four misplaced matches do not mean four exact positions. Also, repeated colours must not be counted more times than they appear in the secret. Keep the goal in mind before your next move.
Questions that come up during play
What is the aim of Mastermind?
Deduce a hidden four-colour code within ten guesses, using exact and misplaced feedback. Use the labelled controls for your next action.
How do the controls work?
Tap one of four positions, then a labelled colour button. Numbers identify colours as well as the swatches. Press Check guess only when all slots are filled. Keep the current game state in view while applying this rule.
For this game, can you show an example?
For secret 1,1,2,2 and guess 1,2,1,3, feedback is one exact and two misplaced. The extra 3 has no match. A new round resets the current game.
Which mistake should I avoid?
Four misplaced matches do not mean four exact positions. Also, repeated colours must not be counted more times than they appear in the secret. Scores here do not represent cash or prizes.
What rules and limits are used here?
Four positions, six colours and ten guesses, with repeated colours allowed. This is an independently coded free colour-code puzzle, not an official branded edition. The controls work with mouse or touch.
How many people can play here?
Solo. This is local browser play, not internet matchmaking. You can start a new round from the game controls.
Can the secret repeat a colour?
Yes. Any of the six colours can appear more than once. A new round resets the current game.
When I start, what does misplaced mean?
The guessed colour appears in the secret but not at that position, after exact matches have been accounted for. Keep the current game state in view while applying this rule.
During a round, are colour numbers part of the rules?
They are labels for accessibility; the number and its colour refer to the same peg choice. The controls work with mouse or touch.
On this page, can I see the answer?
The answer is shown when you solve the code or use all ten guesses. The controls work with mouse or touch.