"If you'd like to try, certainly." He was a little surprised at how readily he extended the invitation (even if it was coupled with a challenge). He couldn't think of very many people he'd worked with over the years that he'd have let into his office without pressing business, especially not on a regular basis. "I can usually find a couple of hours. ... No, I haven't. It sounds dreadfully ... commercial." He couldn't imagine his father sitting down to any sort of game at all, Muggle or not. Anything he'd learned in that part of his life had been from schoolchildren.