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Almost passed tuning attempts
Collect and give a second try to some almost passed tuning attempts and one-line tweaks from the last month. Passed STC LLR: 3.07 (-2.94,2.94) [0.00,4.00] Total: 15124 W: 2974 L: 2756 D: 9394 And LTC LLR: 2.95 (-2.94,2.94) [0.00,4.00] Total: 21577 W: 3507 L: 3289 D: 14781 Bench: 8855226 Resolves #464
This commit is contained in:
Stefano80
Gary Linscott
parent
ecc5ff6693
commit
328d314f2f
4 changed files with 36 additions and 35 deletions
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@ -126,19 +126,19 @@ namespace {
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// friendly pieces.
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const Score MobilityBonus[][32] = {
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{}, {},
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{ S(-68,-49), S(-46,-33), S(-3,-12), S( 5, -4), S( 9, 11), S(15, 16), // Knights
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S( 23, 27), S( 33, 28), S(37, 29) },
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{ S(-49,-44), S(-23,-16), S(16, 1), S(29, 16), S(40, 25), S(51, 34), // Bishops
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S( 55, 43), S( 61, 49), S(64, 51), S(68, 52), S(73, 55), S(75, 60),
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S( 80, 65), S( 86, 66) },
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{ S(-50,-57), S(-28,-22), S(-11, 7), S(-1, 29), S( 0, 39), S( 1, 46), // Rooks
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S( 10, 66), S( 16, 79), S(22, 86), S(23,103), S(30,109), S(33,111),
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S( 37,115), S( 38,119), S(48,124) },
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{ S(-43,-30), S(-27,-15), S( 1, -5), S( 2, -3), S(14, 10), S(18, 24), // Queens
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S( 20, 27), S( 33, 37), S(33, 38), S(34, 43), S(40, 46), S(43, 56),
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S( 46, 61), S( 52, 63), S(52, 63), S(57, 65), S(60, 70), S(61, 74),
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S( 67, 80), S( 76, 82), S(77, 88), S(82, 94), S(86, 95), S(90, 96),
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S( 94, 99), S( 96,100), S(99,111), S(99,112) }
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{ S(-70,-52), S(-52,-37), S( -7,-17), S( 0, -6), S( 8, 5), S( 16, 9), // Knights
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S( 23, 20), S( 31, 21), S( 36, 22) },
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{ S(-49,-44), S(-22,-13), S( 16, 0), S( 27, 11), S( 38, 19), S( 52, 34), // Bishops
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S( 56, 44), S( 65, 47), S( 67, 51), S( 73, 56), S( 81, 59), S( 83, 69),
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S( 95, 72), S(100, 75) },
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{ S(-49,-57), S(-22,-14), S(-10, 18), S( -5, 39), S( -4, 50), S( -2, 58), // Rooks
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S( 6, 78), S( 11, 86), S( 17, 92), S( 19,103), S( 26,111), S( 27,115),
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S( 36,119), S( 41,121), S( 50,122) },
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{ S(-41,-24), S(-26, -8), S( 0, 6), S( 2, 14), S( 12, 27), S( 21, 40), // Queens
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S( 22, 45), S( 37, 55), S( 40, 57), S( 43, 63), S( 50, 68), S( 52, 74),
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S( 56, 80), S( 66, 84), S( 68, 85), S( 69, 88), S( 71, 92), S( 72, 94),
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S( 80, 96), S( 89, 98), S( 94,101), S(102,113), S(106,114), S(107,116),
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S(112,125), S(113,127), S(117,137), S(122,143) }
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};
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// Outpost[knight/bishop][supported by pawn] contains bonuses for knights and
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@ -172,8 +172,8 @@ namespace {
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// PassedFile[File] contains a bonus according to the file of a passed pawn.
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const Score PassedFile[] = {
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S( 14, 13), S( 2, 5), S(-3, -4), S(-19, -14),
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S(-19, -14), S(-3, -4), S( 2, 5), S( 14, 13)
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S( 12, 10), S( 3, 10), S( 1, -8), S(-27, -12),
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S(-27, -12), S( 1, -8), S( 3, 10), S( 12, 10)
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};
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const Score ThreatenedByHangingPawn = S(40, 60);
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@ -414,7 +414,8 @@ namespace {
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{
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// ...and then remove squares not supported by another enemy piece
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b &= ei.attackedBy[Them][PAWN] | ei.attackedBy[Them][KNIGHT]
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| ei.attackedBy[Them][BISHOP] | ei.attackedBy[Them][ROOK];
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| ei.attackedBy[Them][BISHOP] | ei.attackedBy[Them][ROOK]
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| ei.attackedBy[Them][KING];
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if (b)
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attackUnits += QueenContactCheck * popcount<Max15>(b);
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@ -28,7 +28,7 @@ class Position;
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namespace Eval {
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const Value Tempo = Value(17); // Must be visible to search
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const Value Tempo = Value(20); // Must be visible to search
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void init();
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std::string trace(const Position& pos);
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@ -31,28 +31,28 @@ namespace {
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// Polynomial material imbalance parameters
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// pair pawn knight bishop rook queen
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const int Linear[6] = { 1756, -164, -1067, -160, 234, -137 };
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const int Linear[6] = { 1667, -168, -1027, -166, 238, -138 };
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const int QuadraticOurs[][PIECE_TYPE_NB] = {
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// OUR PIECES
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// pair pawn knight bishop rook queen
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{ 0 }, // Bishop pair
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{ 39, 2 }, // Pawn
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{ 35, 271, -4 }, // Knight OUR PIECES
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{ 0, 105, 4, 0 }, // Bishop
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{ -27, -2, 46, 100, -141 }, // Rook
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{-177, 25, 129, 142, -137, 0 } // Queen
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{ 40, 2 }, // Pawn
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{ 32, 255, -3 }, // Knight OUR PIECES
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{ 0, 104, 4, 0 }, // Bishop
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{ -26, -2, 47, 105, -149 }, // Rook
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{-185, 24, 122, 137, -134, 0 } // Queen
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};
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const int QuadraticTheirs[][PIECE_TYPE_NB] = {
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// THEIR PIECES
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// pair pawn knight bishop rook queen
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{ 0 }, // Bishop pair
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{ 37, 0 }, // Pawn
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{ 10, 62, 0 }, // Knight OUR PIECES
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{ 57, 64, 39, 0 }, // Bishop
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{ 50, 40, 23, -22, 0 }, // Rook
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{ 98, 105, -39, 141, 274, 0 } // Queen
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{ 36, 0 }, // Pawn
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{ 9, 63, 0 }, // Knight OUR PIECES
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{ 59, 65, 42, 0 }, // Bishop
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{ 46, 39, 24, -24, 0 }, // Rook
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{ 101, 100, -37, 141, 268, 0 } // Queen
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};
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// Endgame evaluation and scaling functions are accessed directly and not through
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@ -64,7 +64,7 @@ namespace {
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enum NodeType { Root, PV, NonPV };
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// Razoring and futility margin based on depth
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Value razor_margin(Depth d) { return Value(512 + 32 * d); }
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int razor_margin[4] = {483, 570, 603, 554};
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Value futility_margin(Depth d) { return Value(200 * d); }
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// Futility and reductions lookup tables, initialized at startup
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@ -149,7 +149,7 @@ namespace {
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void Search::init() {
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const double K[][2] = {{ 0.83, 2.25 }, { 0.50, 3.00 }};
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const double K[][2] = {{ 0.799, 2.281 }, { 0.484, 3.023 }};
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for (int pv = 0; pv <= 1; ++pv)
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for (int imp = 0; imp <= 1; ++imp)
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@ -393,7 +393,7 @@ void Thread::search(bool isMainThread) {
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// Reset aspiration window starting size
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if (depth >= 5 * ONE_PLY)
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{
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delta = Value(16);
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delta = Value(18);
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alpha = std::max(rootMoves[PVIdx].previousScore - delta,-VALUE_INFINITE);
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beta = std::min(rootMoves[PVIdx].previousScore + delta, VALUE_INFINITE);
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}
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@ -453,7 +453,7 @@ void Thread::search(bool isMainThread) {
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else
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break;
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delta += delta / 2;
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delta += delta / 4 + 5;
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assert(alpha >= -VALUE_INFINITE && beta <= VALUE_INFINITE);
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}
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@ -690,14 +690,14 @@ namespace {
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// Step 6. Razoring (skipped when in check)
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if ( !PvNode
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&& depth < 4 * ONE_PLY
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&& eval + razor_margin(depth) <= alpha
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&& eval + razor_margin[depth] <= alpha
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&& ttMove == MOVE_NONE)
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{
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if ( depth <= ONE_PLY
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&& eval + razor_margin(3 * ONE_PLY) <= alpha)
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&& eval + razor_margin[3 * ONE_PLY] <= alpha)
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return qsearch<NonPV, false>(pos, ss, alpha, beta, DEPTH_ZERO);
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Value ralpha = alpha - razor_margin(depth);
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Value ralpha = alpha - razor_margin[depth];
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Value v = qsearch<NonPV, false>(pos, ss, ralpha, ralpha+1, DEPTH_ZERO);
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if (v <= ralpha)
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return v;
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