Lee Sedol to some extent tried what I suggested in game 3; white had a large territory which the commentator thought could not be invaded. Lee Sedol nevertheless invaded it, and basically his invasion failed, and alphago sort of expressed some degree of contempt for that by actually tenuki-ing in response to one of the invasion moves, albeit usually actually attacking the invaders and defending itself versus the invasion, just not always. So, his invasion was duly crucified, and Lee Sedol then resigned. Three-zip and alphago has now clinched the match. To my eyes, which are not worth much since I'm a weak go player, alphago looked to be owning and operating Lee Sedol during the majority of both games 2 and 3, and a goodly fraction of the alphago moves that commentators claimed were mistakes... actually may not be and they're rethinking their views on them. Games 1 and 3 can be viewed as alphago punishing LS for early mistakes he made, game 2 can be regarded as a new opening innovation by alphago sprung on LS before he'd made any mistake, and then carried through successfully despite seeming a priori against usual heuristics. Nothing that looks like a weakness of alphago has yet been detected by LS and the mob of 9 dans thick on the ground over there. Humanity definitely looking like toast. The English language commentary I was watching was viewed by 50-100K worldwide. But commentaries meanwhile were being televised in China, Korea, and Japan with their 9 dans commenting, and were watched by about 60 freaking million. Definitely makes the West look lame that go is such a major TV hit in Asia, whereas in the USA, if you wanted to watch a go or chess match on TV with strong commentary, then as far as I can tell zero examples in the last 30 years. -- Warren D. Smith http://RangeVoting.org <-- add your endorsement (by clicking "endorse" as 1st step)