MEMORY SPAN

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RULES

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[1] The display shows a sequence of digits that you have to memorize and repeat.
[2] Every digit can appear only once in the number.
[3] You start with a sequence of two digits. The longest possible sequence is a sequence of ten digits.
[4] When you repeat the sequence of digits correctly twice in a row, the sequence is extended by one digit.
[5] If you repeat the sequence incorrectly twice in a row, the game is over.
[6] If a green light comes on next to display, it means that you will advance to the next level if you answer correctly. If a red light comes on next to display, it means that the game will be over if the answer is incorrect.
[7] Every day your best result of the day is saved. Track progress.