Game guide · XIAMI-GZS
An introduction to playing Mastermind
The board gives you the information needed for the next action. Deduce a hidden four-colour code within ten guesses, using exact and misplaced feedback. The computer chooses four positions from six colours; repeated colours are allowed. Try the rule on the board, then read the next instruction.
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
Keep the goal in view while choosing a move. Check guess records your attempt. Exact means correct colour and position; misplaced means correct colour in another position. The game area remains available above the explanation.
What counts as success
Check the rule below as you play. Deduce a hidden four-colour code within ten guesses, using exact and misplaced feedback.
From the start of a round
- 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
The board gives you the information needed for the next action. 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.
Put the rules into context
Use the controls beside the game rather than guessing the rules. 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. Keep the goal in mind before your next move.
Check this before moving on
Four misplaced matches do not mean four exact positions. Also, repeated colours must not be counted more times than they appear in the secret.
Helpful answers for players
For this game, what is the aim of Mastermind?
Deduce a hidden four-colour code within ten guesses, using exact and misplaced feedback. The worked example offers another way to follow the rule.
During a round, 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. You can start a new round from the game controls.
On this page, 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. Keep the current game state in view while applying this rule.
During a round, 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.
When I start, how many people can play here?
Solo. This is local browser play, not internet matchmaking. The controls work with mouse or touch.
On this page, can the secret repeat a colour?
Yes. Any of the six colours can appear more than once. The instructions above use these same rules.
On this page, what does misplaced mean?
The guessed colour appears in the secret but not at that position, after exact matches have been accounted for. The worked example offers another way to follow the rule.
Are colour numbers part of the rules?
They are labels for accessibility; the number and its colour refer to the same peg choice. No download or player account is required.
When I start, can I see the answer?
The answer is shown when you solve the code or use all ten guesses. Keep the current game state in view while applying this rule.
