From 05ef14ed564938663c21f1e6768e1eac420a4a3b Mon Sep 17 00:00:00 2001
From: MJZ1977 <37274752+MJZ1977@users.noreply.github.com>
Date: Tue, 15 May 2018 22:09:46 +0200
Subject: [PATCH] Less threat in defended squares

---
 src/evaluate.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/evaluate.cpp b/src/evaluate.cpp
index 01b5aa5b839..68ed6e843b4 100644
--- a/src/evaluate.cpp
+++ b/src/evaluate.cpp
@@ -546,7 +546,7 @@ namespace {
             Square s = pop_lsb(&b);
             score += ThreatByMinor[type_of(pos.piece_on(s))];
             if (type_of(pos.piece_on(s)) != PAWN)
-                score += ThreatByRank * (int)relative_rank(Them, s);
+                score += ThreatByRank * (int)relative_rank(Them, s) / (weak & s ? 1 : 2);
         }
 
         b = (pos.pieces(Them, QUEEN) | weak) & attackedBy[Us][ROOK];
@@ -555,7 +555,7 @@ namespace {
             Square s = pop_lsb(&b);
             score += ThreatByRook[type_of(pos.piece_on(s))];
             if (type_of(pos.piece_on(s)) != PAWN)
-                score += ThreatByRank * (int)relative_rank(Them, s);
+                score += ThreatByRank * (int)relative_rank(Them, s) / (weak & s ? 1 : 2);
         }
 
         b = weak & attackedBy[Us][KING];