- moveOverhead * (2 + mtg));
// Use extra time with larger increments
- double optExtra = std::clamp(1.0 + 12.0 * limits.inc[us] / limits.time[us], 1.0, 1.12);
+ double optExtra = std::clamp(1.0 + 12.5 * limits.inc[us] / limits.time[us], 1.0, 1.12);
+
+ // Calculate time constants based on current time left.
+ double optConstant = std::min(0.00335 + 0.0003 * std::log10(limits.time[us] / 1000.0), 0.0048);
+ double maxConstant = std::max(3.6 + 3.0 * std::log10(limits.time[us] / 1000.0), 2.7);
// A user may scale time usage by setting UCI option "Slow Mover"
// Default is 100 and changing this value will probably lose elo.
// game time for the current move, so also cap to 20% of available game time.
if (limits.movestogo == 0)
{
- optScale = std::min(0.0120 + std::pow(ply + 3.0, 0.45) * 0.0039,
+ optScale = std::min(0.0120 + std::pow(ply + 3.3, 0.44) * optConstant,
0.2 * limits.time[us] / double(timeLeft))
* optExtra;
- maxScale = std::min(7.0, 4.0 + ply / 12.0);
+ maxScale = std::min(6.8, maxConstant + ply / 12.2);
}
// x moves in y seconds (+ z increment)
maxScale = std::min(6.3, 1.5 + 0.11 * mtg);
}
- // Never use more than 80% of the available time for this move
+ // Limit the maximum possible time for this move
optimumTime = TimePoint(optScale * timeLeft);
maximumTime =
- TimePoint(std::min(0.8 * limits.time[us] - moveOverhead, maxScale * optimumTime)) - 10;
+ TimePoint(std::min(0.84 * limits.time[us] - moveOverhead, maxScale * optimumTime)) - 10;
if (Options["Ponder"])
optimumTime += optimumTime / 4;