When below 1 second, reduce mtg if above a reasonable threshold

official-stockfish · Mar 10, 2024 · 9d08232 · 9d08232
1 parent 632f1c2
commit 9d08232
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/src/timeman.cpp b/src/timeman.cpp
@@ -84,6 +84,12 @@ void TimeManagement::init(Search::LimitsType& limits,
     // Maximum move horizon of 50 moves
     int mtg = limits.movestogo ? std::min(limits.movestogo, 50) : 50;
 
+    // if less than one second, gradually reduce mtg
+    if (limits.time[us] < 1000 && (double(mtg) / limits.time[us] > 0.05))
+    {
+        mtg = limits.time[us] * 0.05;
+    }
+
     // Make sure timeLeft is > 0 since we may use it as a divisor
     TimePoint timeLeft = std::max(TimePoint(1), limits.time[us] + limits.inc[us] * (mtg - 1)
                                                   - moveOverhead * (2 + mtg));