Mastermind

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Allow duplicate colors in the secret code Add four extra colors to the palette

Secret Code:

How to Play

Select a color to fill the active row.
Click a filled pin to remove it.
Press "Check Guess" when four pins are filled.
Right place: correct color in the correct position.
Wrong place: correct color but wrong position.
You have 20 attempts; enable "Allow duplicate colors" to let repeats appear in the secret code.
Switch on "Add four extra colors" to expand your palette mid-game.