The Kryptos Tableau as a Vigenere Cipher is essentially just an XYZ Co-ordinates grid. You take a letter position from the top row, and match it with a letter on the left column to get an intersecting letter in the middle. However it only becomes clear when you enlarge the grid outside of it’s boundaries to see where the code shifts are coming from. The Kryptos Tableau when calculated in every possible combination shows the pattern.
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