X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fsearch.cpp;h=c692baf5a72e3db774b2e728f25e1c91e93b3b31;hp=f3e9c15d58776c8b79ae5e1565469763ab3bfd50;hb=3a558a3d8b1400e0bafe0ba5c368c65542462a36;hpb=34c7f1387d514176996144020ac6ac0c603fca4b

diff --git a/src/search.cpp b/src/search.cpp
index f3e9c15d..c692baf5 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -162,7 +162,10 @@ namespace {
 
   // Step 6. Razoring
 
+  // Maximum depth for razoring
   const Depth RazorDepth = 4 * OnePly;
+
+  // Dynamic razoring margin based on depth
   inline Value razor_margin(Depth d) { return Value(0x200 + 0x10 * d); }
 
   // Step 8. Null move search with verification search
@@ -171,8 +174,12 @@ namespace {
   // evaluation of the position is more than NullMoveMargin below beta.
   const Value NullMoveMargin = Value(0x200);
 
+  // Maximum depth for use of dynamic threat detection when null move fails low
+  const Depth ThreatDepth = 5 * OnePly;
+
   // Step 9. Internal iterative deepening
 
+  // Minimum depth for use of internal iterative deepening
   const Depth IIDDepthAtPVNodes = 5 * OnePly;
   const Depth IIDDepthAtNonPVNodes = 8 * OnePly;
 
@@ -188,6 +195,7 @@ namespace {
   Depth CheckExtension[2], SingleEvasionExtension[2], PawnPushTo7thExtension[2];
   Depth PassedPawnExtension[2], PawnEndgameExtension[2], MateThreatExtension[2];
 
+  // Minimum depth for use of singular extension
   const Depth SingularExtensionDepthAtPVNodes = 6 * OnePly;
   const Depth SingularExtensionDepthAtNonPVNodes = 8 * OnePly;
 
@@ -197,6 +205,7 @@ namespace {
 
   // Step 12. Futility pruning
 
+  // Futility margin for quiescence search
   const Value FutilityMarginQS = Value(0x80);
 
   // Futility lookup tables (initialized at startup) and their getter functions
@@ -215,7 +224,7 @@ namespace {
   inline Depth    pv_reduction(Depth d, int mn) { return (Depth)    PVReductionMatrix[Min(d / 2, 63)][Min(mn, 63)]; }
   inline Depth nonpv_reduction(Depth d, int mn) { return (Depth) NonPVReductionMatrix[Min(d / 2, 63)][Min(mn, 63)]; }
 
-
+  // Step. Common adjustments
 
   // Search depth at iteration 1
   const Depth InitialDepth = OnePly;
@@ -224,17 +233,15 @@ namespace {
   // better than the second best move.
   const Value EasyMoveMargin = Value(0x200);
 
-  /// Variables initialized by UCI options
-
-  // Depth limit for use of dynamic threat detection
-  Depth ThreatDepth;
-
   // Last seconds noise filtering (LSN)
   const bool UseLSNFiltering = true;
   const int LSNTime = 4000; // In milliseconds
   const Value LSNValue = value_from_centipawns(200);
   bool loseOnTime = false;
 
+
+  /// Global variables
+
   // Iteration counters
   int Iteration;
 
@@ -429,8 +436,6 @@ bool think(const Position& pos, bool infinite, bool ponder, int side_to_move,
   MateThreatExtension[1] = Depth(get_option_value_int("Mate Threat Extension (PV nodes)"));
   MateThreatExtension[0] = Depth(get_option_value_int("Mate Threat Extension (non-PV nodes)"));
 
-  ThreatDepth   = get_option_value_int("Threat Depth") * OnePly;
-
   Chess960 = get_option_value_bool("UCI_Chess960");
   ShowCurrentLine = get_option_value_bool("UCI_ShowCurrLine");
   UseLogFile = get_option_value_bool("Use Search Log");
@@ -1435,7 +1440,7 @@ namespace {
     // Loop through all legal moves until no moves remain or a beta cutoff occurs
 
     // Initialize a MovePicker object for the current position
-    MovePicker mp = MovePicker(pos, ttMove, depth, H, &ss[ply]);
+    MovePicker mp = MovePicker(pos, ttMove, depth, H, &ss[ply], beta);
     CheckInfo ci(pos);
 
     while (   bestValue < beta
@@ -2588,7 +2593,7 @@ namespace {
   DWORD WINAPI init_thread(LPVOID threadID) {
 
     TM.idle_loop(*(int*)threadID, NULL);
-    return NULL;
+    return 0;
   }
 
 #endif
@@ -2994,9 +2999,6 @@ namespace {
     if (ActiveThreads == 1)
         return;
 
-    for (int i = 1; i < ActiveThreads; i++)
-        assert(threads[i].state == THREAD_SLEEPING);
-
 #if !defined(_MSC_VER)
     pthread_mutex_lock(&WaitLock);
     pthread_cond_broadcast(&WaitCond);