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Update trace eval

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Updates the information printed in the "eval" command. Removes piece value estimation, and adds both small and big net eval information.

closes https://github.com/official-stockfish/Stockfish/pull/6743

No functional change
This commit is contained in:
sscg13
2026-04-19 07:10:20 +02:00
committed by Joost VandeVondele
parent c3bcf74925
commit de7b0cd7a6
2 changed files with 60 additions and 111 deletions
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src/evaluate.cpp
+24 -9
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@@ -107,16 +107,31 @@ std::string Eval::trace(Position& pos, const Eval::NNUE::Networks& networks) {
ss << std::showpoint << std::showpos << std::fixed << std::setprecision(2) << std::setw(15);
auto [psqt, positional] = networks.big.evaluate(pos, *accumulators, caches->big);
Value v = psqt + positional;
v = pos.side_to_move() == WHITE ? v : -v;
ss << "NNUE evaluation " << 0.01 * UCIEngine::to_cp(v, pos) << " (white side)\n";
auto [psqtSmall, positionalSmall] = networks.small.evaluate(pos, *accumulators, caches->small);
Value vSmall = psqtSmall + positionalSmall;
bool useBig = std::abs(vSmall) < 277;
ss << "(Small net) NNUE evaluation " << vSmall << " (side to move, internal units)\n";
vSmall = pos.side_to_move() == WHITE ? vSmall : -vSmall;
ss << "(Small net) NNUE evaluation " << 0.01 * UCIEngine::to_cp(vSmall, pos)
<< " (white side)\n";
v = evaluate(networks, pos, *accumulators, *caches, VALUE_ZERO);
v = pos.side_to_move() == WHITE ? v : -v;
ss << "Final evaluation " << 0.01 * UCIEngine::to_cp(v, pos) << " (white side)";
ss << " [with scaled NNUE, ...]";
ss << "\n";
auto [psqtBig, positionalBig] = networks.big.evaluate(pos, *accumulators, caches->big);
Value vBig = psqtBig + positionalBig;
ss << "(Big net) NNUE evaluation " << vBig << " (side to move, internal units)\n";
vBig = pos.side_to_move() == WHITE ? vBig : -vBig;
ss << "(Big net) NNUE evaluation " << 0.01 * UCIEngine::to_cp(vBig, pos)
<< " (white side)\n";
ss << "SimpleEval " << simple_eval(pos)
<< " (side to move, internal units)\n\n";
Value v = evaluate(networks, pos, *accumulators, *caches, VALUE_ZERO);
v = pos.side_to_move() == WHITE ? v : -v;
ss << "Final evaluation " << "(using "
<< (use_smallnet(pos) && !useBig ? "small net) " : "big net) ");
ss << 0.01 * UCIEngine::to_cp(v, pos) << " (white side)";
ss << " [with scaled NNUE, ...]\n";
return ss.str();
}