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Tuned values after 505k games

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Various king and pawn tuned eval values after 505k 60 sec 600 nodes time
SPSA games. Adjusted passed rank and file values to be symmetrical.

Passed LTC (after passed rank/file adjustment):
LLR: 2.95 (-2.94,2.94) [0.00,4.00]
Total: 37906 W: 6953 L: 6668 D: 24285
http://tests.stockfishchess.org/tests/view/5b2790960ebc5902b8d17ba1

A previous, very similar version with raw tuned values passed STC and LTC:

STC:
LLR: 2.95 (-2.94,2.94) [0.00,4.00]
Total: 39515 W: 9227 L: 8900 D: 21388
http://tests.stockfishchess.org/tests/view/5b277e3e0ebc5902b8d17ac9

LTC:
LLR: 2.95 (-2.94,2.94) [0.00,4.00]
Total: 14618 W: 2743 L: 2537 D: 9338
http://tests.stockfishchess.org/tests/view/5b2785020ebc5902b8d17b98

Closes https://github.com/official-stockfish/Stockfish/pull/1654

bench: 4777396
This commit is contained in:
candirufish
2018-06-21 10:20:31 +02:00
committed by Stéphane Nicolet
parent 06a853eb9c
commit 062eb074c8
2 changed files with 29 additions and 31 deletions
Download Patch File Download Diff File Expand all files Collapse all files

24
src/pawns.cpp
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@@ -32,9 +32,9 @@ namespace {
#define S(mg, eg) make_score(mg, eg)
// Pawn penalties
constexpr Score Isolated = S(13, 16);
constexpr Score Backward = S(17, 11);
constexpr Score Doubled = S(13, 40);
constexpr Score Isolated = S( 6, 16);
constexpr Score Backward = S(15, 21);
constexpr Score Doubled = S( 8, 44);
// Connected pawn bonus by opposed, phalanx, #support and rank
Score Connected[2][2][3][RANK_NB];
@@ -42,25 +42,25 @@ namespace {
// 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( 7), V(76), V( 84), V( 38), V( 7), V( 30), V(-19) },
{ V(-13), V(83), V( 42), V(-27), V( 2), V(-32), V(-45) },
{ V(-26), V(63), V( 5), V(-44), V( -5), V( 2), V(-59) },
{ V(-19), V(53), V(-11), V(-22), V(-12), V(-51), V(-60) }
{ V( 28), V(79), V( 75), V( 46), V( 14), V( 31), V(-14) },
{ V(-48), V(50), V( 29), V(-21), V(-41), V(-23), V(-45) },
{ V(-25), V(50), V( 17), V(-33), V( -5), V( 9), V(-35) },
{ V(-29), V(57), V(-25), V(-48), V( -4), V(-46), V(-64) }
};
// 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( 25), V( 79), V(107), V( 51), V( 27), V( 0), V( 0) },
{ V( 5), V( 35), V(121), V( -2), V( 15), V(-10), V(-10) },
{ V(-20), V( 22), V( 98), V( 36), V( 7), V(-20), V(-20) },
{ V(-27), V( 24), V( 80), V( 25), V( -4), V(-30), V(-30) }
{ V( 34), V( 58), V(113), V( 61), V(37), V( 24), V( 21) },
{ V( 23), V( 46), V( 93), V( 10), V( 2), V(-20), V( 6) },
{ V( -6), V( 22), V(106), V( 28), V( 6), V(-33), V( -1) },
{ V(-17), V( 33), V( 71), V( 14), V(-9), V(-21), V(-16) }
};
// Danger of blocked enemy pawns storming our king, by rank
constexpr Value BlockedStorm[RANK_NB] =
{ V( 0), V( 0), V( 75), V(-10), V(-20), V(-20), V(-20) };
{ V(0), V(0), V( 58), V(-13), V(-22), V(-3), V(-5) };
#undef S
#undef V