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Revert VLTC regression from #5634

Browse Source 
https://tests.stockfishchess.org/tests/view/671bf61b86d5ee47d953cf23

And thanks to @xu-shawn for suggesting running a VLTC regress test since
depth modifications affect scaling. Also, the LTC was showing a slight
regress after 680+k games  ~= -0.34 , for reference:
https://tests.stockfishchess.org/tests/view/67042b1f86d5ee47d953be7c

closes https://github.com/official-stockfish/Stockfish/pull/5663

Bench: 1307308
This commit is contained in:
FauziAkram
2024-11-01 13:54:50 +03:00
committed by Disservin
parent ecf5646f6e
commit 54cf226604
1 changed files with 1 additions and 1 deletions
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src/search.cpp
+1 -1
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@@ -850,7 +850,7 @@ Value Search::Worker::search(
// For cutNodes, if depth is high enough, decrease depth by 2 if there is no ttMove, // For cutNodes, if depth is high enough, decrease depth by 2 if there is no ttMove,
// or by 1 if there is a ttMove with an upper bound. // or by 1 if there is a ttMove with an upper bound.
if (cutNode && depth >= 7 && (!ttData.move || ttData.bound == BOUND_UPPER)) if (cutNode && depth >= 7 && (!ttData.move || ttData.bound == BOUND_UPPER))
depth -= 2; depth -= 1 + !ttData.move;
// Step 11. ProbCut (~10 Elo) // Step 11. ProbCut (~10 Elo)
// If we have a good enough capture (or queen promotion) and a reduced search // If we have a good enough capture (or queen promotion) and a reduced search