Game guide · DAIGOU168
Learn your way around Mastermind
Take a moment to check the current turn. Deduce a hidden four-colour code within ten guesses, using exact and misplaced feedback. Keep the goal in mind before your next move. 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.
Bring this focus to a round
Check guess records your attempt. Exact means correct colour and position; misplaced means correct colour in another position.
What counts as success
Use the controls beside the game rather than guessing the rules. 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.
The controls to know
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. Start a new round when you are ready to try again.
A closer look at one example
The example and rules describe the same game you can play above. 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.
Keep this in mind
Four misplaced matches do not mean four exact positions. Also, repeated colours must not be counted more times than they appear in the secret. The game area remains available above the explanation.
Further help with the game
What is the aim of Mastermind?
Deduce a hidden four-colour code within ten guesses, using exact and misplaced feedback. The game is played locally in your browser.
For this game, 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. The controls work with mouse or touch.
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.
For this 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. The game is played locally in your browser.
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. The controls work with mouse or touch.
When I start, can the secret repeat a colour?
Yes. Any of the six colours can appear more than once. The instructions above use these same rules.
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.
When I start, are colour numbers part of the rules?
They are labels for accessibility; the number and its colour refer to the same peg choice. Use the labelled controls for your next action.
On this page, can I see the answer?
The answer is shown when you solve the code or use all ten guesses. You can start a new round from the game controls.