mainThread->bestMoveChanges = 0;
}
- size_t multiPV = Options["MultiPV"];
+ multiPV = Options["MultiPV"];
Skill skill(Options["Skill Level"]);
// When playing with strength handicap enable MultiPV search that we will
if (move == excludedMove)
continue;
- // At root obey the "searchmoves" option and skip moves not listed in Root
- // Move List. As a consequence any illegal move is also skipped. In MultiPV
- // mode we also skip PV moves which have been already searched.
- if (rootNode && !std::count(thisThread->rootMoves.begin() + thisThread->PVIdx,
- thisThread->rootMoves.end(), move))
- continue;
+ if (rootNode)
+ {
+ // At root obey the "searchmoves" option and skip moves not listed in Root
+ // Move List. As a consequence any illegal move is also skipped.
+ if (!std::count(thisThread->rootMoves.begin() + thisThread->PVIdx,
+ thisThread->rootMoves.end(), move))
+ continue;
+
+ // In MultiPV mode we not only skip PV moves which have already been searched,
+ // but also any other move except we have reached the last PV line.
+ if ( thisThread->PVIdx + 1 < thisThread->multiPV
+ && move != ttMove)
+ continue;
+ }
ss->moveCount = ++moveCount;
int elapsed = Time.elapsed() + 1;
const RootMoves& rootMoves = pos.this_thread()->rootMoves;
size_t PVIdx = pos.this_thread()->PVIdx;
- size_t multiPV = std::min((size_t)Options["MultiPV"], rootMoves.size());
+ size_t multiPV = pos.this_thread()->multiPV;
uint64_t nodesSearched = Threads.nodes_searched();
uint64_t tbHits = Threads.tb_hits() + (TB::RootInTB ? rootMoves.size() : 0);