HCha/Stockfish
1
0
Fork 0
mirror of https://github.com/HChaZZY/Stockfish.git synced 2025-12-20 00:56:39 +08:00
Code Issues Packages Projects Releases Wiki Activity

Stockfish 1.2 optimistic

Browse Source 
Optimistic razoring settings. It is stronger with
most engines but weaker with someones.

The default is instead more solid and uniform with all
the opponents.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba
2008-12-29 12:24:34 +01:00
parent 11763d2b7f
commit cc3c1dc25a
1 changed files with 3 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
src/search.cpp
View File

@@ -1241,14 +1241,14 @@ namespace {
else if ( !value_is_mate(beta)
&& approximateEval < beta - RazorMargin
&& depth < RazorDepth
&& (RazorAtDepthOne || depth >= 2*OnePly)
&& (RazorAtDepthOne || depth > OnePly)
&& ttMove == MOVE_NONE
&& !pos.has_pawn_on_7th(pos.side_to_move()))
{
Value v = qsearch(pos, ss, beta-1, beta, Depth(0), ply, threadID);
if ( (v < beta - RazorMargin - RazorMargin / 4)
|| (depth < 3*OnePly && v < beta - RazorMargin)
|| (depth < 2*OnePly && v < beta - RazorMargin / 2))
|| (depth <= 2*OnePly && v < beta - RazorMargin)
|| (depth <= OnePly && v < beta - RazorMargin / 2))
return v;
}