One is "legal" the other is "total problem space" From a computing point of view...

		nhumrich 22 days ago \| parent \| context \| favorite \| on: No reachable chess position with more than 218 mov... One is "legal" the other is "total problem space" From a computing point of view, the total problem space is what matter because you still have to "compute" if it's legal or not before moving on. There isn't a straightforward way to only iterate over legal positions.