Simplify time management.

[stockfish] / src / search.cpp

diff --git a/src/search.cpp b/src/search.cpp
index ff6bf335d06d695bd17abda8567b7981c8d9e79a..cd38e62920f4dc37b00b0b7ca43c7742f9232056 100644 (file)
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -466,8 +466,7 @@ void Thread::search() {
           // If the bestMove is stable over several iterations, reduce time accordingly
           timeReduction = lastBestMoveDepth + 10 < completedDepth ? 1.63 : 0.73;
           double reduction = (1.56 + mainThread->previousTimeReduction) / (2.20 * timeReduction);
-          double bestMoveInstability = 1.073 + std::max(1.0, 2.25 - 9.9 / rootDepth)
-                                              * totBestMoveChanges / Threads.size();
+          double bestMoveInstability = 1 + 1.7 * totBestMoveChanges / Threads.size();
           int complexity = mainThread->complexityAverage.value();
           double complexPosition = std::clamp(1.0 + (complexity - 326) / 1618.1, 0.5, 1.5);