From d4cb80b2106efb58db87495090a3898d902075d6 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Ste=CC=81phane=20Nicolet?= Date: Wed, 2 May 2018 21:49:54 +0200 Subject: [PATCH] Tweak the connected[] array value for pawns on rank 5 A recent tuning session by Jerry Donald Watson suggested that the value for the pawns on the fifth rank in the connected[] array were a little bit too high in master. We lower here this value from 75 to 65. STC: LLR: 2.95 (-2.94,2.94) [0.00,4.00] Total: 27399 W: 5646 L: 5384 D: 16369 http://tests.stockfishchess.org/tests/view/5aea17c50ebc5902a1bed396 LTC: LLR: 3.66 (-2.94,2.94) [0.00,4.00] Total: 95590 W: 14529 L: 14062 D: 66999 http://tests.stockfishchess.org/tests/view/5aea34a40ebc5902a104ebe5 Closes https://github.com/official-stockfish/Stockfish/pull/1580 Bench: 5186783 --- src/pawns.cpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/pawns.cpp b/src/pawns.cpp index 3e926005..6623ab71 100644 --- a/src/pawns.cpp +++ b/src/pawns.cpp @@ -179,7 +179,7 @@ namespace Pawns { void init() { - static constexpr int Seed[RANK_NB] = { 0, 13, 24, 18, 76, 100, 175, 330 }; + static constexpr int Seed[RANK_NB] = { 0, 13, 24, 18, 65, 100, 175, 330 }; for (int opposed = 0; opposed <= 1; ++opposed) for (int phalanx = 0; phalanx <= 1; ++phalanx) -- 2.39.2