const Value FutilityMarginQS = Value(0x80);
// Each move futility margin is decreased
- const Value IncrementalFutilityMargin = Value(0xA);
+ const Value IncrementalFutilityMargin = Value(0x8);
// Remaining depth: 1 ply 1.5 ply 2 ply 2.5 ply 3 ply 3.5 ply
const Value FutilityMargins[12] = { Value(0x100), Value(0x120), Value(0x200), Value(0x220), Value(0x250), Value(0x270),
{
if (futilityValue == VALUE_NONE)
futilityValue = evaluate(pos, ei, threadID)
- + 64*(1+bitScanReverse32(int(depth) * int(depth)))
- + 4*IncrementalFutilityMargin;
+ + 64*(2+bitScanReverse32(int(depth) * int(depth)));
futilityValueScaled = futilityValue - moveCount * IncrementalFutilityMargin;