While making an enclosure at ‘a’ or ‘b’ is in accordance with the principles of fuseki, this is not to say that the marked stone disregards the fundamentals of opening theory: the stone is placed so as to make it difficult for White to play an approach move at ‘a’ or ‘b’. Black’s third move may seem very greedy, in that its purpose is to discourage White from play- ing an approach move against the corner while simultaneously-