{"action":"created","issue":{"url":"https://api.github.com/repos/official-stockfish/Stockfish/issues/1520","repository_url":"https://api.github.com/repos/official-stockfish/Stockfish","labels_url":"https://api.github.com/repos/official-stockfish/Stockfish/issues/1520/labels{/name}","comments_url":"https://api.github.com/repos/official-stockfish/Stockfish/issues/1520/comments","events_url":"https://api.github.com/repos/official-stockfish/Stockfish/issues/1520/events","html_url":"https://github.com/official-stockfish/Stockfish/pull/1520","id":309678696,"number":1520,"title":"Simplify KBPKB endgame with opposite bishops","user":{"login":"snicolet","id":6761856,"avatar_url":"https://avatars1.githubusercontent.com/u/6761856?v=4","gravatar_id":"","url":"https://api.github.com/users/snicolet","html_url":"https://github.com/snicolet","followers_url":"https://api.github.com/users/snicolet/followers","following_url":"https://api.github.com/users/snicolet/following{/other_user}","gists_url":"https://api.github.com/users/snicolet/gists{/gist_id}","starred_url":"https://api.github.com/users/snicolet/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/snicolet/subscriptions","organizations_url":"https://api.github.com/users/snicolet/orgs","repos_url":"https://api.github.com/users/snicolet/repos","events_url":"https://api.github.com/users/snicolet/events{/privacy}","received_events_url":"https://api.github.com/users/snicolet/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":1,"created_at":"2018-03-29T09:16:02Z","updated_at":"2018-03-29T12:15:44Z","closed_at":null,"author_association":"NONE","pull_request":{"url":"https://api.github.com/repos/official-stockfish/Stockfish/pulls/1520","html_url":"https://github.com/official-stockfish/Stockfish/pull/1520","diff_url":"https://github.com/official-stockfish/Stockfish/pull/1520.diff","patch_url":"https://github.com/official-stockfish/Stockfish/pull/1520.patch"},"body":"When we reach a position with only two opposite colored bishops and one pawn on the board, current master would give it a scale factor of 9/64=0.14 in about one position out of 7200, and a scale factor of 0.0 in the 7199 others. The patch gives a scale factor of 0.0 in 100% of the cases.\r\n\r\nSTC:\r\nLLR: 2.96 (-2.94,2.94) [-3.00,1.00]\r\nTotal: 55845 W: 11467 L: 11410 D: 32968\r\nhttp://tests.stockfishchess.org/tests/view/5abc585f0ebc5902926cf15e\r\n\r\nLTC: \r\nLLR: 2.95 (-2.94,2.94) [-3.00,1.00]\r\nTotal: 11915 W: 1852 L: 1719 D: 8344\r\nhttp://tests.stockfishchess.org/tests/view/5abc7f750ebc5902926cf18c\r\n\r\nThis patch is a side effect of an ongoing effort to improve the SF evaluation of positions involving a pair of opposite bishops. See the GitHub diff of this LTC test which almost passed at sprt[0..5] for a discussion: http://tests.stockfishchess.org/tests/view/5ab9030b0ebc5902932cbf93\r\n\r\nNo functional change (at small bench depths)"},"comment":{"url":"https://api.github.com/repos/official-stockfish/Stockfish/issues/comments/377216531","html_url":"https://github.com/official-stockfish/Stockfish/pull/1520#issuecomment-377216531","issue_url":"https://api.github.com/repos/official-stockfish/Stockfish/issues/1520","id":377216531,"user":{"login":"Hanamuke","id":10192642,"avatar_url":"https://avatars3.githubusercontent.com/u/10192642?v=4","gravatar_id":"","url":"https://api.github.com/users/Hanamuke","html_url":"https://github.com/Hanamuke","followers_url":"https://api.github.com/users/Hanamuke/followers","following_url":"https://api.github.com/users/Hanamuke/following{/other_user}","gists_url":"https://api.github.com/users/Hanamuke/gists{/gist_id}","starred_url":"https://api.github.com/users/Hanamuke/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/Hanamuke/subscriptions","organizations_url":"https://api.github.com/users/Hanamuke/orgs","repos_url":"https://api.github.com/users/Hanamuke/repos","events_url":"https://api.github.com/users/Hanamuke/events{/privacy}","received_events_url":"https://api.github.com/users/Hanamuke/received_events","type":"User","site_admin":false},"created_at":"2018-03-29T12:15:44Z","updated_at":"2018-03-29T12:15:44Z","author_association":"NONE","body":"Either way it passed LTC easily."}}
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