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Tuned Values after 2 million spsa games

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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
This commit is contained in:
candirufish
2018-07-14 08:08:32 +02:00
committed by Stéphane Nicolet
parent d2752fdc15
commit d2d4e85f25
2 changed files with 31 additions and 31 deletions
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26
src/pawns.cpp
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@@ -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