Yeah, I don't really understand Andy Liu's gameplan here. He played that unusual wider extension on the top, and then got the o18 descent in sente which kind of help fixes the weakness but not really, and Murukawa immediately exploits (punishes?) this with k17. Did he anticipate this? Seems good for black to me, particularly as he didn't probe in the top left corner before the e3 tenuki (if you can exchange c17 for d16 that's obviously good as black would answer differently once he gets the thickness on top side, and even c17 for c16 might be a good exchange; I would expect those kind of subtleties at the pro level). And then I can't understand why he didn't play the j15 atari, surely that's a good exchange if black answers; did he really fear black would tenuki? I would worry about black tenuki of m18 so I wouldn't push my luck with that one after.

