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Remove time reduction for recaptures

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Passed simplification STC
LLR: 2.96 (-2.94,2.94) <-1.75,0.25>
Total: 54016 W: 14098 L: 13902 D: 26016
Ptnml(0-2): 165, 5797, 14919, 5931, 196
https://tests.stockfishchess.org/tests/view/6758a90486d5ee47d954201e

Passed simplification LTC
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 296940 W: 75631 L: 75689 D: 145620
Ptnml(0-2): 145, 28928, 90384, 28866, 147
https://tests.stockfishchess.org/tests/view/6758df7a86d5ee47d9542091

closes https://github.com/official-stockfish/Stockfish/pull/5719

Bench: 1148169
This commit is contained in:
Daniel Monroe
2024-12-13 13:45:54 -08:00
committed by Disservin
parent e770b55f7f
commit ba145332c9
4 changed files with 1 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
src/engine.cpp
View File

@@ -58,7 +58,6 @@ Engine::Engine(std::optional<std::string> path) :
NN::NetworkBig({EvalFileDefaultNameBig, "None", ""}, NN::EmbeddedNNUEType::BIG), NN::NetworkBig({EvalFileDefaultNameBig, "None", ""}, NN::EmbeddedNNUEType::BIG),
NN::NetworkSmall({EvalFileDefaultNameSmall, "None", ""}, NN::EmbeddedNNUEType::SMALL))) { NN::NetworkSmall({EvalFileDefaultNameSmall, "None", ""}, NN::EmbeddedNNUEType::SMALL))) {
pos.set(StartFEN, false, &states->back()); pos.set(StartFEN, false, &states->back());
capSq = SQ_NONE;
options["Debug Log File"] << Option("", [](const Option& o) { options["Debug Log File"] << Option("", [](const Option& o) {
start_logger(o); start_logger(o);
@@ -125,7 +124,6 @@ std::uint64_t Engine::perft(const std::string& fen, Depth depth, bool isChess960
void Engine::go(Search::LimitsType& limits) { void Engine::go(Search::LimitsType& limits) {
assert(limits.perft == 0); assert(limits.perft == 0);
verify_networks(); verify_networks();
limits.capSq = capSq;
threads.start_thinking(options, pos, states, limits); threads.start_thinking(options, pos, states, limits);
} }
@@ -168,7 +166,6 @@ void Engine::set_position(const std::string& fen, const std::vector<std::string>
states = StateListPtr(new std::deque<StateInfo>(1)); states = StateListPtr(new std::deque<StateInfo>(1));
pos.set(fen, options["UCI_Chess960"], &states->back()); pos.set(fen, options["UCI_Chess960"], &states->back());
capSq = SQ_NONE;
for (const auto& move : moves) for (const auto& move : moves)
{ {
auto m = UCIEngine::to_move(pos, move); auto m = UCIEngine::to_move(pos, move);
@@ -178,11 +175,6 @@ void Engine::set_position(const std::string& fen, const std::vector<std::string>
states->emplace_back(); states->emplace_back();
pos.do_move(m, states->back()); pos.do_move(m, states->back());
capSq = SQ_NONE;
DirtyPiece& dp = states->back().dirtyPiece;
if (dp.dirty_num > 1 && dp.to[1] == SQ_NONE)
capSq = m.to_sq();
} }
} }

3
src/engine.h
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@@ -39,8 +39,6 @@
namespace Stockfish { namespace Stockfish {
enum Square : int;
class Engine { class Engine {
public: public:
using InfoShort = Search::InfoShort; using InfoShort = Search::InfoShort;
@@ -116,7 +114,6 @@ class Engine {
Position pos; Position pos;
StateListPtr states; StateListPtr states;
Square capSq;
OptionsMap options; OptionsMap options;
ThreadPool threads; ThreadPool threads;

3
src/search.cpp
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@@ -453,10 +453,9 @@ void Search::Worker::iterative_deepening() {
timeReduction = lastBestMoveDepth + 8 < completedDepth ? 1.495 : 0.687; timeReduction = lastBestMoveDepth + 8 < completedDepth ? 1.495 : 0.687;
double reduction = (1.48 + mainThread->previousTimeReduction) / (2.17 * timeReduction); double reduction = (1.48 + mainThread->previousTimeReduction) / (2.17 * timeReduction);
double bestMoveInstability = 1 + 1.88 * totBestMoveChanges / threads.size(); double bestMoveInstability = 1 + 1.88 * totBestMoveChanges / threads.size();
double recapture = limits.capSq == rootMoves[0].pv[0].to_sq() ? 0.955 : 1.005;
double totalTime = double totalTime =
mainThread->tm.optimum() * fallingEval * reduction * bestMoveInstability * recapture; mainThread->tm.optimum() * fallingEval * reduction * bestMoveInstability;
// Cap used time in case of a single legal move for a better viewer experience // Cap used time in case of a single legal move for a better viewer experience
if (rootMoves.size() == 1) if (rootMoves.size() == 1)

1
src/search.h
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@@ -126,7 +126,6 @@ struct LimitsType {
int movestogo, depth, mate, perft, infinite; int movestogo, depth, mate, perft, infinite;
uint64_t nodes; uint64_t nodes;
bool ponderMode; bool ponderMode;
Square capSq;
}; };