From: candirufish Date: Sat, 14 Jul 2018 06:08:32 +0000 (+0200) Subject: Tuned Values after 2 million spsa games X-Git-Url: https://git.sesse.net/?p=stockfish;a=commitdiff_plain;h=d2d4e85f25061aacd65a8b458b79cad15b74a5bb Tuned Values after 2 million spsa games Various king and pawn eval values tuned after 2 million games. Rounding slightly adjusted. LTC: http://tests.stockfishchess.org/tests/view/5b477a260ebc5978f4be3ed4 LLR: 2.95 (-2.94,2.94) [0.00,4.00] Total: 32783 W: 5852 L: 5588 D: 21343 STC: http://tests.stockfishchess.org/tests/view/5b472d420ebc5978f4be3e4d LLR: 3.23 (-2.94,2.94) [0.00,4.00] Total: 44380 W: 10201 L: 9841 D: 24338 I think I reached the limit of the fishtest framework. It frequently crashed at 2 million games already. The small values also moved a lot throughout the entire tuning session though with smaller margin. The passed danger and close enemies values seems the most sensitive (changing close enemies alone to 6 failed before but now it passes), whether or not they are close to optimal I don't know, but it seems some parameters are also correlated to others. Closes https://github.com/official-stockfish/Stockfish/pull/1670 bench: 5103722 --- diff --git a/src/evaluate.cpp b/src/evaluate.cpp index ef69ee6c..9d98a63b 100644 --- a/src/evaluate.cpp +++ b/src/evaluate.cpp @@ -142,28 +142,28 @@ namespace { // PassedRank[Rank] contains a bonus according to the rank of a passed pawn constexpr Score PassedRank[RANK_NB] = { - S(0, 0), S(4, 17), S(7, 20), S(14, 36), S(42, 62), S(165, 171), S(279, 252) + S(0, 0), S(5, 18), S(12, 23), S(10, 31), S(57, 62), S(163, 167), S(271, 250) }; // PassedFile[File] contains a bonus according to the file of a passed pawn constexpr Score PassedFile[FILE_NB] = { - S( 11, 14), S( 0, -5), S(-2, -8), S(-25,-13), - S(-25,-13), S(-2, -8), S( 0, -5), S( 11, 14) + S( -1, 7), S( 0, 9), S(-9, -8), S(-30,-14), + S(-30,-14), S(-9, -8), S( 0, 9), S( -1, 7) }; // PassedDanger[Rank] contains a term to weight the passed score - constexpr int PassedDanger[RANK_NB] = { 0, 0, 0, 2, 7, 12, 19 }; + constexpr int PassedDanger[RANK_NB] = { 0, 0, 0, 3, 7, 11, 20 }; // KingProtector[knight/bishop] contains a penalty according to distance from king - constexpr Score KingProtector[] = { S(4, 6), S(6, 3) }; + constexpr Score KingProtector[] = { S(5, 6), S(6, 5) }; // Assorted bonuses and penalties - constexpr Score BishopPawns = S( 3, 5); - constexpr Score CloseEnemies = S( 8, 0); + constexpr Score BishopPawns = S( 3, 7); + constexpr Score CloseEnemies = S( 6, 0); constexpr Score Connectivity = S( 3, 1); constexpr Score CorneredBishop = S( 50, 50); constexpr Score Hanging = S( 52, 30); - constexpr Score HinderPassedPawn = S( 5, -1); + constexpr Score HinderPassedPawn = S( 4, 0); constexpr Score KnightOnQueen = S( 21, 11); constexpr Score LongDiagonalBishop = S( 22, 0); constexpr Score MinorBehindPawn = S( 16, 0); @@ -171,13 +171,13 @@ namespace { constexpr Score PawnlessFlank = S( 20, 80); constexpr Score RookOnPawn = S( 8, 24); constexpr Score SliderOnQueen = S( 42, 21); - constexpr Score ThreatByKing = S( 31, 75); - constexpr Score ThreatByPawnPush = S( 49, 30); + constexpr Score ThreatByKing = S( 23, 76); + constexpr Score ThreatByPawnPush = S( 45, 40); constexpr Score ThreatByRank = S( 16, 3); - constexpr Score ThreatBySafePawn = S(165,133); + constexpr Score ThreatBySafePawn = S(173,102); constexpr Score TrappedRook = S( 92, 0); constexpr Score WeakQueen = S( 50, 10); - constexpr Score WeakUnopposedPawn = S( 5, 26); + constexpr Score WeakUnopposedPawn = S( 5, 29); #undef S @@ -471,12 +471,12 @@ namespace { unsafeChecks &= mobilityArea[Them]; kingDanger += kingAttackersCount[Them] * kingAttackersWeight[Them] - + 64 * kingAttacksCount[Them] - + 183 * popcount(kingRing[Us] & weak) - + 122 * popcount(pos.blockers_for_king(Us) | unsafeChecks) - - 860 * !pos.count(Them) - - 7 * mg_value(score) / 8 - + 17 ; + + 69 * kingAttacksCount[Them] + + 185 * popcount(kingRing[Us] & weak) + + 129 * popcount(pos.blockers_for_king(Us) | unsafeChecks) + - 873 * !pos.count(Them) + - 6 * mg_value(score) / 8 + - 2 ; // Transform the kingDanger units into a Score, and subtract it from the evaluation if (kingDanger > 0) diff --git a/src/pawns.cpp b/src/pawns.cpp index 1131b5e8..02c584e6 100644 --- a/src/pawns.cpp +++ b/src/pawns.cpp @@ -32,35 +32,35 @@ namespace { #define S(mg, eg) make_score(mg, eg) // Pawn penalties - constexpr Score Isolated = S( 4, 20); - constexpr Score Backward = S(21, 22); - constexpr Score Doubled = S(12, 54); + constexpr Score Isolated = S( 5, 15); + constexpr Score Backward = S(9, 24); + constexpr Score Doubled = S(11, 56); // Connected pawn bonus by opposed, phalanx, #support and rank Score Connected[2][2][3][RANK_NB]; // Strength of pawn shelter for our king by [distance from edge][rank]. // RANK_1 = 0 is used for files where we have no pawn, or pawn is behind our king. - constexpr Value ShelterStrength[int(FILE_NB) / 2][RANK_NB] = { - { V( 16), V(82), V( 83), V( 47), V( 19), V( 44), V( 4) }, - { V(-51), V(56), V( 33), V(-58), V(-57), V(-50), V(-39) }, - { V(-20), V(71), V( 16), V(-10), V( 13), V( 19), V(-30) }, - { V(-29), V(12), V(-21), V(-40), V(-15), V(-77), V(-91) } + constexpr Value ShelterStrength[int(FILE_NB) / 2][RANK_NB] = { + { V( -3), V(81), V( 93), V( 58), V( 39), V( 18), V( 25) }, + { V(-40), V(61), V( 35), V(-49), V(-29), V(-11), V(-63) }, + { V(-7), V(75), V( 23), V(-2), V( 32), V( 3), V(-45) }, + { V(-36), V(-13), V(-29), V(-52), V(-48), V(-67), V(-166) } }; // Danger of enemy pawns moving toward our king by [distance from edge][rank]. // RANK_1 = 0 is used for files where the enemy has no pawn, or their pawn // is behind our king. constexpr Value UnblockedStorm[int(FILE_NB) / 2][RANK_NB] = { - { V(54), V( 48), V( 99), V(91), V(42), V( 32), V( 31) }, - { V(34), V( 27), V(105), V(38), V(32), V(-19), V( 3) }, - { V(-4), V( 28), V( 87), V(18), V(-3), V(-14), V(-11) }, - { V(-5), V( 22), V( 75), V(14), V( 2), V( -5), V(-19) } + { V(89), V( 107), V( 123), V(93), V(57), V( 45), V( 51) }, + { V(44), V( -18), V(123), V(46), V(39), V(-7), V( 23) }, + { V(4), V( 52), V( 162), V(37), V(7), V(-14), V(-2) }, + { V(-10), V( -14), V( 90), V(15), V( 2), V( -7), V(-16) } }; // Danger of blocked enemy pawns storming our king, by rank constexpr Value BlockedStorm[RANK_NB] = - { V(0), V(0), V( 81), V(-9), V(-5), V(-1), V(26) }; + { V(0), V(0), V( 66), V(6), V(5), V(1), V(15) }; #undef S #undef V