I have no idea how some (mainly of the orthodox pieces) came to be 48x48 or 49x49.
The original Alfaerie pieces were 49x49, because David Howe originally made them for Zillions-of-Games, whose boards were using 49x49 squares. While I made pieces whose dimensions matched the dimensions of the visible image, he made pieces of uniform dimensions that perfectly fit the spaces they were intended for.
The original Alfaerie pieces were 49x49, because David Howe originally made them for Zillions-of-Games, whose boards were using 49x49 squares. While I made pieces whose dimensions matched the dimensions of the visible image, he made pieces of uniform dimensions that perfectly fit the spaces they were intended for.