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Rewrite of 'Adjust correction history' condition

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Current condition is convoluted and hard to understand because of
several negations. Also added 2 comments to make the concept behind the
condition better understandable.

closes https://github.com/official-stockfish/Stockfish/pull/5685

No functional change
This commit is contained in:
Guenther Demetz 2024-11-20 14:48:23 +01:00 • committed by Disservin
parent 0282edc0b0
commit d29c8bd5d4
1 changed files with 3 additions and 3 deletions
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6
src/search.cpp
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@ -1425,9 +1425,9 @@ moves_loop: // When in check, search starts here
depth, bestMove, unadjustedStaticEval, tt.generation()); depth, bestMove, unadjustedStaticEval, tt.generation());
// Adjust correction history // Adjust correction history
if (!ss->inCheck && (!bestMove || !pos.capture(bestMove)) if (!ss->inCheck && !(bestMove && pos.capture(bestMove))
&& !(bestValue >= beta && bestValue <= ss->staticEval) && ((bestValue < ss->staticEval && bestValue < beta) // negative correction & no fail high
&& !(!bestMove && bestValue >= ss->staticEval)) || (bestValue > ss->staticEval && bestMove))) // positive correction & no fail low
{ {
const auto m = (ss - 1)->currentMove; const auto m = (ss - 1)->currentMove;