Complex sentence: A yosu-miru move is, in some sense, a sacrifice of a stone, but is designed to yield a very sophisticated kind of information about a developing group and how best to attack it, based on its response.
Split into simpler sentences: A yosu-miru move is in some sense, a sacrifice of a stone. But its designed to yield a very sophisticated kind of information about a developing group and how best to attack it, based on its response.