Claffis is a website on the Deep Web which contains a musical memory puzzle. The player is required to memorize a 7-note sequence, each measure corresponds to a single note. If the player fails the puzzle, they can try again by clicking certain notes on the row at the top of the page, which will generate a new sequence. Solving the puzzle reveals a Deep Wiki III URL. Solving the puzzle the first try grants the "Improver" achievement.
The "sectors" and their respective notes.[1]
Strategy: Only certain notes have the chance of being chosen by the website. There are overall 12 notes that can be played. These 12 notes can be seperated into "sectors". Wherever someone clicks in a notes respective sector said note wil be played. Each note is only chosen by the website once per cycle.
In conclusion, not all notes need to be remembered and certain areas will play certain notes even though the mouse may not seem like it is close enough to that note.