opelly/Stockfish
1
0
Fork 0
mirror of https://github.com/opelly27/Stockfish.git synced 2026-05-20 03:57:45 +00:00
Code Issues Packages Projects Releases Wiki Activity

In non-PV IID don't call evaluate when in check

Browse Source 
Was a long standing hidden bug from Glaurung times,
triggered only now that we enable IID at non PV nodes.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba
2009-12-15 12:07:23 +01:00
parent 14c3da5cad
commit 0d88b832e3
1 changed files with 1 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/search.cpp
+1 -1
View File
@@ -1435,7 +1435,7 @@ namespace {
// Go with internal iterative deepening if we don't have a TT move // Go with internal iterative deepening if we don't have a TT move
if (UseIIDAtNonPVNodes && ttMove == MOVE_NONE && depth >= 8*OnePly && if (UseIIDAtNonPVNodes && ttMove == MOVE_NONE && depth >= 8*OnePly &&
evaluate(pos, ei, threadID) >= beta - IIDMargin) !isCheck && evaluate(pos, ei, threadID) >= beta - IIDMargin)
{ {
search(pos, ss, beta, Min(depth/2, depth-2*OnePly), ply, false, threadID); search(pos, ss, beta, Min(depth/2, depth-2*OnePly), ply, false, threadID);
ttMove = ss[ply].pv[ply]; ttMove = ss[ply].pv[ply];