{"action":"created","issue":{"url":"https://api.github.com/repos/SanchoGGP/ggp-base/issues/227","labels_url":"https://api.github.com/repos/SanchoGGP/ggp-base/issues/227/labels{/name}","comments_url":"https://api.github.com/repos/SanchoGGP/ggp-base/issues/227/comments","events_url":"https://api.github.com/repos/SanchoGGP/ggp-base/issues/227/events","html_url":"https://github.com/SanchoGGP/ggp-base/issues/227","id":70337912,"number":227,"title":"English Draughts oddity","user":{"login":"arr28","id":3194913,"avatar_url":"https://avatars.githubusercontent.com/u/3194913?v=3","gravatar_id":"","url":"https://api.github.com/users/arr28","html_url":"https://github.com/arr28","followers_url":"https://api.github.com/users/arr28/followers","following_url":"https://api.github.com/users/arr28/following{/other_user}","gists_url":"https://api.github.com/users/arr28/gists{/gist_id}","starred_url":"https://api.github.com/users/arr28/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/arr28/subscriptions","organizations_url":"https://api.github.com/users/arr28/orgs","repos_url":"https://api.github.com/users/arr28/repos","events_url":"https://api.github.com/users/arr28/events{/privacy}","received_events_url":"https://api.github.com/users/arr28/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/SanchoGGP/ggp-base/labels/bug","name":"bug","color":"fc2929"},{"url":"https://api.github.com/repos/SanchoGGP/ggp-base/labels/P2","name":"P2","color":"666666"},{"url":"https://api.github.com/repos/SanchoGGP/ggp-base/labels/T2","name":"T2","color":"444499"}],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":3,"created_at":"2015-04-23T07:45:05Z","updated_at":"2015-04-23T17:15:45Z","closed_at":null,"body":"I think we made various questionable choices in [this game of English Drafts](http://www.ggp.org/view/tiltyard/matches/cf812506d81e55757df034a2243f407fe4b75d07/), but ~40 moves before the end (move 111), we just gave away one of our pieces for no apparent reason.\r\n\r\nEven if MCTS wasn't getting much signal, at least the piece heuristic should have prevented us from doing that."},"comment":{"url":"https://api.github.com/repos/SanchoGGP/ggp-base/issues/comments/95659523","html_url":"https://github.com/SanchoGGP/ggp-base/issues/227#issuecomment-95659523","issue_url":"https://api.github.com/repos/SanchoGGP/ggp-base/issues/227","id":95659523,"user":{"login":"arr28","id":3194913,"avatar_url":"https://avatars.githubusercontent.com/u/3194913?v=3","gravatar_id":"","url":"https://api.github.com/users/arr28","html_url":"https://github.com/arr28","followers_url":"https://api.github.com/users/arr28/followers","following_url":"https://api.github.com/users/arr28/following{/other_user}","gists_url":"https://api.github.com/users/arr28/gists{/gist_id}","starred_url":"https://api.github.com/users/arr28/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/arr28/subscriptions","organizations_url":"https://api.github.com/users/arr28/orgs","repos_url":"https://api.github.com/users/arr28/repos","events_url":"https://api.github.com/users/arr28/events{/privacy}","received_events_url":"https://api.github.com/users/arr28/received_events","type":"User","site_admin":false},"created_at":"2015-04-23T17:15:45Z","updated_at":"2015-04-23T17:15:45Z","body":"So, we think that reducing ourselves to 1K is a forced draw and that everything else is (slightly) worse.\r\n\r\nHowever, I'm highly dubious that reducing ourselves to a 2 vs 1 position is actually a forced draw.  It's my understanding that, in almost all situations, 2K vs 1K is a win for the 2K player.  I thought that the only occasion where the 1K could recover a draw is a very specific situation where the 2K are stuck in the corner on the single diagonal.\r\n\r\nHowever, I think you imply that there's some move limit that we might reach first.  The logs would imply that it's at least 39 moves away from the capture though and I reckon black's forced win can't be much deeper than that."}}