From: Leonid Pechenik <lp@home>
Date: Thu, 20 Feb 2014 07:38:10 +0000 (+0100)
Subject: Distribute part of first move time to other moves
X-Git-Url: https://git.sesse.net/?p=stockfish;a=commitdiff_plain;h=b8cfc255d46113573a0869e56224a382c74dfcdc

Distribute part of first move time to other moves

Passed both short TC:
LLR: 2.97 (-2.94,2.94) [-1.50,4.50]
Total: 18907 W: 3475 L: 3322 D: 12110

And long TC:
LLR: 2.96 (-2.94,2.94) [0.00,6.00]
Total: 19044 W: 2997 L: 2811 D: 13236

bench: 8430785
---

diff --git a/src/search.cpp b/src/search.cpp
index 0d1a401c..da22c5cf 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -43,7 +43,7 @@ namespace Search {
   std::vector<RootMove> RootMoves;
   Position RootPos;
   Color RootColor;
-  Time::point SearchTime, IterationTime;
+  Time::point SearchTime;
   StateStackPtr SetupStates;
 }
 
@@ -397,7 +397,7 @@ namespace {
                 sync_cout << uci_pv(pos, depth, alpha, beta) << sync_endl;
         }
 
-        IterationTime = Time::now() - SearchTime;
+        Time::point iterationTime = Time::now() - SearchTime;
 
         // If skill levels are enabled and time is up, pick a sub-optimal best move
         if (skill.enabled() && skill.time_to_pick(depth))
@@ -432,7 +432,7 @@ namespace {
             // Stop the search if only one legal move is available or all
             // of the available time has been used.
             if (   RootMoves.size() == 1
-                || IterationTime > TimeMgr.available_time() )
+                || iterationTime > TimeMgr.available_time() )
                 stop = true;
 
             if (stop)
@@ -1627,8 +1627,7 @@ void check_time() {
   Time::point elapsed = Time::now() - SearchTime;
   bool stillAtFirstMove =    Signals.firstRootMove
                          && !Signals.failedLowAtRoot
-                         &&  elapsed > TimeMgr.available_time()
-                         &&  elapsed > IterationTime * 1.4;
+                         &&  elapsed > TimeMgr.available_time() * 75 / 100;
 
   bool noMoreTime =   elapsed > TimeMgr.maximum_time() - 2 * TimerThread::Resolution
                    || stillAtFirstMove;
diff --git a/src/search.h b/src/search.h
index 2fd8d47d..3752dd70 100644
--- a/src/search.h
+++ b/src/search.h
@@ -100,7 +100,7 @@ extern LimitsType Limits;
 extern std::vector<RootMove> RootMoves;
 extern Position RootPos;
 extern Color RootColor;
-extern Time::point SearchTime, IterationTime;
+extern Time::point SearchTime;
 extern StateStackPtr SetupStates;
 
 extern void init();
diff --git a/src/timeman.h b/src/timeman.h
index 5a98f614..90bd1867 100644
--- a/src/timeman.h
+++ b/src/timeman.h
@@ -27,7 +27,7 @@ class TimeManager {
 public:
   void init(const Search::LimitsType& limits, int currentPly, Color us);
   void pv_instability(double bestMoveChanges);
-  int available_time() const { return int(optimumSearchTime * unstablePvFactor * 0.62); }
+  int available_time() const { return int(optimumSearchTime * unstablePvFactor * 0.71); }
   int maximum_time() const { return maximumSearchTime; }
 
 private: