opelly/Stockfish
1
0
Fork 0
mirror of https://github.com/opelly27/Stockfish.git synced 2026-05-20 08:37:44 +00:00
Code Issues Packages Projects Releases Wiki Activity

Futility pruning till ply 6 included

Browse Source 
Seems good:

After 796 games: +211 = 393 -192 +8 elo

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba
2008-12-24 09:34:09 +01:00
parent d11426c777
commit 2feb9d5100
1 changed files with 5 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/search.cpp
+5 -3
View File
@@ -1314,12 +1314,14 @@ namespace {
continue;
// Value based pruning
if (depth < 6 * OnePly && approximateEval < beta)
if (depth < 7 * OnePly && approximateEval < beta)
{
if (futilityValue == VALUE_NONE)
futilityValue = evaluate(pos, ei, threadID)
+ (depth < 2 * OnePly ? FutilityMargin1
: FutilityMargin2 + (depth - 2*OnePly) * 32);
+ (depth < 2 * OnePly ? FutilityMargin1 :
+ (depth < 6 * OnePly ? FutilityMargin2 + (depth - 2*OnePly) * 32
: FutilityMargin2 + (depth - 2*OnePly) * 64));
if (futilityValue < beta)
{
if (futilityValue > bestValue)