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| Subject: Latest abrok Development Version January 23rd (SF The gift that keeps on giving ) Fri Jan 24, 2020 1:30 pm | |
| !! latest version !!
Windows x64 for Haswell CPUs Windows x64 for modern computers Windows x64 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers Linux x64 | Author: Stefan Geschwentner Date: Thu Jan 23 19:12:48 2020 +0100 Timestamp: 1579803168 History update for pruned captures Use a SEE pruned capture move for history updates: this patch collects pruned capture moves also in the failed captures list, so that they get an update in capture history. STC: LLR: 2.95 (-2.94,2.94) {-1.00,3.00} Total: 11124 W: 2222 L: 2089 D: 6813 Elo +4.15 Ptnml(0-2): 186, 1280, 2506, 1381, 200 http://tests.stockfishchess.org/tests/view/5e28995fc3b97aa0d75bc294 LTC: LLR: 2.94 (-2.94,2.94) {0.00,2.00} Total: 25552 W: 3418 L: 3211 D: 18923 Elo +2.81 Ptnml(0-2): 168, 2354, 7538, 2490, 200 http://tests.stockfishchess.org/tests/view/5e2943734744cfa4d6af415b Closes https://github.com/official-stockfish/Stockfish/pull/2511 Bench: 4810202 | Windows x64 for Haswell CPUs Windows x64 for modern computers Windows x64 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers Linux x64 | Author: Vizvezdenec Date: Thu Jan 23 19:03:25 2020 +0100 Timestamp: 1579802605 Tweak trapped rook penalty This patch greatly increases the endgame penalty for having a trapped rook. Idea was a result of witnessing Stockfish losing some games at CCCC exchanging pieces in the position with a trapped rook which directly lead to a lost endgame. This patch should partially fix such behavior making this penalty high even in deep endgames. Passed STC http://tests.stockfishchess.org/tests/view/5e279d7cc3b97aa0d75bc1c4 LLR: 2.94 (-2.94,2.94) {-1.00,3.00} Total: 8528 W: 1706 L: 1588 D: 5234 Elo +4.81 Ptnml(0-2): 133, 957, 1985, 1024, 159 Passed LTC http://tests.stockfishchess.org/tests/view/5e27aee4c3b97aa0d75bc1e1 LLR: 2.95 (-2.94,2.94) {0.00,2.00} Total: 88713 W: 11520 L: 11130 D: 66063 Elo +1.53 Ptnml(0-2): 646, 8170, 26342, 8492, 676 Closes https://github.com/official-stockfish/Stockfish/pull/2510 Bench: 4964462 ---------------------- Comment by Malcolm Campbell: Congrats! I think this might be a common pattern - scores that seem to mainly apply to the midgame are often better with a similar (or at least fairly big) endgame value as well. Maybe there are others eval parameters we can tweak like this... | Windows x64 for Haswell CPUs Windows x64 for modern computers Windows x64 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers Linux x64 | Author: Stefan Geschwentner Date: Thu Jan 23 18:53:50 2020 +0100 Timestamp: 1579802030 Less reduction for escape moves at ttPv nodes At expected PV nodes or nodes which marked as PV node in the hash table, reduce escape moves even one ply less. STC: LLR: 2.94 (-2.94,2.94) {-1.00,3.00} Total: 31795 W: 6140 L: 5953 D: 19702 Elo +2.04 Ptnml(0-2): 525, 3625, 7455, 3695, 583 http://tests.stockfishchess.org/tests/view/5e25d77fc3b97aa0d75bc013 LTC: LLR: 2.94 (-2.94,2.94) {0.00,2.00} Total: 43975 W: 5708 L: 5454 D: 32813 Elo +2.01 Ptnml(0-2): 314, 4012, 13070, 4242, 325 http://tests.stockfishchess.org/tests/view/5e2618c1c3b97aa0d75bc03c Closes https://github.com/official-stockfish/Stockfish/pull/2505 Bench: 4475583 | Windows x64 for Haswell CPUs Windows x64 for modern computers Windows x64 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers Linux x64 | Author: Guenther Demetz Date: Thu Jan 23 18:43:47 2020 +0100 Timestamp: 1579801427 Use (strict) greater-than-operator for 'improving' Currently on a normal bench run in ~0,7% of cases 'improving' is set to true although the static eval isn't improving at all, just keeping equal. It looks like the strict gt-operator is more appropriate here, since it returns to 'improving' its literal meaning without sideffects. STC {-1.00,3.00} failed yellow: https://tests.stockfishchess.org/tests/view/5e1ec38c8fd5f550e4ae1c28 LLR: -2.93 (-2.94,2.94) {-1.00,3.00} Total: 53155 W: 10170 L: 10109 D: 32876 Elo +0.40 Ptnml(0-2): 863, 6282, 12251, 6283, 892 non-regression LTC passed: https://tests.stockfishchess.org/tests/view/5e1f1c0d8fd5f550e4ae1c41 LLR: 2.98 (-2.94,2.94) {-1.50,0.50} Total: 23961 W: 3114 L: 3018 D: 17829 Elo +1.39 Ptnml(0-2): 163, 2220, 7114, 2298, 170 CLoses https://github.com/official-stockfish/Stockfish/pull/2496 |
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