From 476b8a59cc06ad9b7ecc31427ab114c7709d7fbe Mon Sep 17 00:00:00 2001
From: dhb <1084714805@qq.com>
Date: Fri, 26 Jul 2024 18:28:12 +0800
Subject: [PATCH] ablation: no internal iterative reduction

test r15
---
 Rapfi/search/ab/search.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Rapfi/search/ab/search.cpp b/Rapfi/search/ab/search.cpp
index 47470f4..ed3be7c 100644
--- a/Rapfi/search/ab/search.cpp
+++ b/Rapfi/search/ab/search.cpp
@@ -888,8 +888,8 @@ Value search(Board &board, SearchStack *ss, Value alpha, Value beta, Depth depth
     }
 
     // Step 10. Internal iterative deepening (reduction)
-    if (!RootNode && PvNode && !ttMove)
-        depth -= IIR_REDUCTION_PV;
+    //if (!RootNode && PvNode && !ttMove)
+    //    depth -= IIR_REDUCTION_PV;
 
     // Reduce for pv ttMove that has not been chosen for a few iterations
     if (PvNode && depth > 1 && ttMove)