Cushion: Square Deal
Square Deal represents the smallest number of different squares which can be fitted together to make a larger square.
This arrangement was discovered in 1978 by A J W Duijvestijn. Since 1939 it had been thought that 55 was the smallest number.
We also have an afghan version of Square Deal
Buy the cushion pattern using the link at the top of this page
or in 12 Pillows of Wisdom - a book of 12 cushion patterns