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DEBUG: Instrument with Gary's test code 

To verify that the end position from the PV matches the
evaluation score after these changes

We need to temporarily disable the qsearch tt-value refinement,
as that will change the score returned.
accurate_pv_2
Marco Costalba 2014-11-17 18:02:44 +01:00
parent 792ae2c5a6
commit 802ff4b379
1 changed files with 32 additions and 4 deletions
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36
src/search.cpp
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@ -110,6 +110,31 @@ namespace {
Move best;
};
void check_eval(const RootMove& rm, Position& pos) {
if (rm.score == 0)
return;
std::string foo = pos.fen();
StateInfo state[MAX_PLY+6], *st = state;
int idx = 0;
for (; idx < int(rm.pv.size()); ++idx) {
pos.do_move(rm.pv[idx], *st++);
}
if (abs(rm.score) != abs(evaluate(pos))) {
for (int j = 0; j < int(rm.pv.size()); ++j)
std::cout << " " << UCI::format_move(rm.pv[j], false);
std::cout << std::endl << foo << std::endl << pos.fen();
std::cout << std::endl << "Eval mismatch: " << rm.score << " " << evaluate(pos) << std::endl;
exit(1);
}
else
std::cerr << "Success!!: " << rm.score << " " << evaluate(pos) << std::endl;
while (idx) pos.undo_move(rm.pv[--idx]);
}
} // namespace
@ -344,6 +369,9 @@ namespace {
else if ( PVIdx + 1 == std::min(multiPV, RootMoves.size())
|| Time::now() - SearchTime > 3000)
sync_cout << uci_pv(pos, depth, alpha, beta) << sync_endl;
if (!Signals.stop)
check_eval(RootMoves[0], RootPos);
}
// If skill levels are enabled and time is up, pick a sub-optimal best move
@ -1082,10 +1110,10 @@ moves_loop: // When in check and at SpNode search starts from here
if ((ss->staticEval = bestValue = tte->eval_value()) == VALUE_NONE)
ss->staticEval = bestValue = evaluate(pos);
// Can ttValue be used as a better position evaluation?
if (ttValue != VALUE_NONE)
if (tte->bound() & (ttValue > bestValue ? BOUND_LOWER : BOUND_UPPER))
bestValue = ttValue;
// // Can ttValue be used as a better position evaluation?
// if (ttValue != VALUE_NONE)
// if (tte->bound() & (ttValue > bestValue ? BOUND_LOWER : BOUND_UPPER))
// bestValue = ttValue;
}
else
ss->staticEval = bestValue =