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Always print an info line before a bestmove

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if very few nodes are being searched before a bestmove is reported,
an info line might be missing.

fixes https://github.com/official-stockfish/Stockfish/issues/2757

closes https://github.com/official-stockfish/Stockfish/pull/3088

no functional change
This commit is contained in:
Joost VandeVondele 2020-08-31 22:53:20 +02:00
parent a057f170c6
commit 61381372ec
1 changed files with 5 additions and 2 deletions
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7
src/search.cpp
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@ -1861,12 +1861,15 @@ string UCI::pv(const Position& pos, Depth depth, Value alpha, Value beta) {
{
bool updated = rootMoves[i].score != -VALUE_INFINITE;
if (depth == 1 && !updated)
if (depth == 1 && !updated && i > 0)
continue;
Depth d = updated ? depth : depth - 1;
Depth d = updated ? depth : std::max(1, depth - 1);
Value v = updated ? rootMoves[i].score : rootMoves[i].previousScore;
if (v == -VALUE_INFINITE)
v = VALUE_ZERO;
bool tb = TB::RootInTB && abs(v) < VALUE_MATE_IN_MAX_PLY;
v = tb ? rootMoves[i].tbScore : v;