Premium Word Squares:
The score for an entire word is doubled
when one of its letters is placed on a pink square: it is tripled when one
of its letters is placed on a red square. Include premiums for double or
triple letter values, if any, before doubling or tripling the word score.
If a word is formed that covers two premium word squares, the score is
doubled and then re-doubled (4 times the letter count), or tripled and then
re-tripled (9 times the letter count). NOTE: the center square is a pink
square, which doubles the score for the first word.