April 30, 2013

Problem of the Week

for Tuesday, April 30, 2013

The two different seven-hexomino polyominoes with a hole are shown below. (The hole has been darkened.) How many different eight-hexomino polyominoes with a hole are there? (We call polyominoes the same if there exists a shift, rotation, or reflection that will turn one into the other.)

Winners of the Hexomino challenge