Draft:Bpow27
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A triomino is an arrangement of three squares with a "corner" as sketched below -- note that the figure may be rotated through any multiple of 90 degrees
What is the largest number of squares on an 8 X 8 checkerboard which can be colored green so that any triomino on the board has at least one of its squares not colored green?
Problem by Alberto L Delgado, from the now extinct Bradley Problem of the Week.