From 14d162d9f4f3544acf617de46a38a69878003e31 Mon Sep 17 00:00:00 2001
From: Vizvezdenec <Vizvezdenec@gmail.com>
Date: Wed, 14 Apr 2021 21:25:18 +0300
Subject: [PATCH] Simplification: last capture extension

The code for last capture extension can be removed in current master.

Passed STC
LLR: 2.95 (-2.94,2.94) {-1.00,0.20}
Total: 85024 W: 7754 L: 7707 D: 69563
Ptnml(0-2): 293, 5991, 29914, 6004, 310
https://tests.stockfishchess.org/tests/view/607690f1814175337896068f

Passed LTC
LLR: 2.96 (-2.94,2.94) {-0.70,0.20}
Total: 39880 W: 1503 L: 1453 D: 36924
Ptnml(0-2): 17, 1281, 17293, 1333, 16
https://tests.stockfishchess.org/tests/view/6076ccbe814175337896069e

Closes https://github.com/official-stockfish/Stockfish/pull/3430

Bench: 4202264
---
 src/search.cpp | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/src/search.cpp b/src/search.cpp
index f23db4c1..c9ee47fe 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -1158,11 +1158,6 @@ moves_loop: // When in check, search starts from here
                && (pos.is_discovered_check_on_king(~us, move) || pos.see_ge(move)))
           extension = 1;
 
-      // Last captures extension
-      else if (   PieceValue[EG][pos.captured_piece()] > PawnValueEg
-               && pos.non_pawn_material() <= 2 * RookValueMg)
-          extension = 1;
-
       // Add extension to new depth
       newDepth += extension;
 
-- 
2.39.2