Lü Fan
It is said that Lü Fan recommended himself to Sun Ce through a game of weiqi – after Sun Ce made a bad opening move, Lü Fan capitalised on it and pointed out the mistake. Sun Ce was suitably impressed and offered Lü Fan a post. Rather than accept a high and lofty position, however, Lü Fan insisted upon remaining in a low one where he could more effectively manage troops. Sun Ce was further impressed and since then the two became inseparable. The game of weiqi in question, called the "Sun-Lü Game", is purported to be the first weiqi game to be recorded move for move, but many scholars doubt its authenticity. After this, Lü Fan was appointed as a Chief Controller.