Classic code-breaking logic game

Four colours.
One correct code.

Crack the four-colour code hidden by the computer. Every guess gives you new feedback — the rest is pure logic.

Classic game Hard mode

Classic game

Classic Mastermind. All feedback stays visible, so you can build the solution step by step.

Start game

Hard mode

Memory + logic. Feedback disappears after a few seconds, so you need to keep the clues in your head.

Start hard mode
How does it work?

Simple to learn. Hard to master.

1

Choose four colours

Build a row of four using six different colours. Each colour can be used only once.

2

Read the feedback

A white marker means the right colour in the right place. A dark marker means the right colour in the wrong place.

3

Narrow the possibilities

Every new row gives you more information. Find all four colours in their exact positions.

The classic game

Detailed game rules

Show the detailed rules

The computer hides a code made of four different colours selected from six. Your task is to identify both the colours and their exact order.

After every guess you receive four feedback markers. A white marker means a correct colour in the correct position; a dark marker means a correct colour in the wrong position. An empty marker means that colour is not in the hidden code.

Use the feedback from all previous rows together. Each new guess should reduce the remaining possibilities until all four colours are in the correct positions.

There is no time limit: take your time, reason through the clues and enjoy the puzzle.