6 cups are lined up if the first 3 are full but you can only move 1 to create the pattern Full empty full empty full empty.
Solution:
Pick up the 2nd cup, pour its contents into the 5th cup, then place the now-empty 2nd cup back: the sequence becomes full, empty, full, empty, full, empty.
Comments (1)
Simply pour the second full cup into the second empty cup.
F F F E E E
F E F E F E
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