- The computer picks a sequence of colors. The number of colors is the code length. The default code length is 4 but it can be changed when starting a new game.

- The objective of the game is to guess the exact positions of the colors in the computer's sequence.

- By default, a color can be used only once in a code sequence. If you start a new game with the 'Allow duplicates' checked, then any color can be used any number of times in the code sequence.

- After filling a line with your guesses and clicking on the 'Check' button, the computer responses with the result of your guess.

- For each color in your guess that is in the correct color and correct position in the code sequence, the computer display a small red color on the right side of the current guess.

- For each color in your guess that is in the correct color but is NOT in the correct position in the code sequence, the computer display a small white color on the right side of the current guess.

- You win the game when you manage to guess all the colors in the code sequence and when they all in the right position.

- You lose the game if you use all attempts without guessing the computer code sequence.

- Start a new game by clicking on the 'Start New Game' button. If you wish to change the default game parameters, you may change the 'Code length' and/or the 'Allow duplicates' fields before clicking on the 'Start new game' button.

- To start filling a line, you must first select a color at the bottom of the table by clicking on it. After selecting a color you can just put it in the current guess line above by clicking on the desired position.

- To change the color selection, you have two ways. One is clicking on a new color on one of the colors at the bottom and the other way is just by scrolling the mouse wheel.

- After filling a whole line, you can still change your selection before asking the computer to respond to your guess. When you're satisfied with your guess, just click on the 'Check' button and get the computer response.

- Good Luck!!