From 4c0878cb0b710f2409af0fea036ea1bb3d6f26ed Mon Sep 17 00:00:00 2001
From: anematode <timothy.herchen@gmail.com>
Date: Fri, 27 Feb 2026 16:29:44 -0800
Subject: [PATCH] skip setting threatByLesser[KING]

It doesn't make sense for a king to move to a square threatened by a lesser
piece, since that move would be illegal.

closes https://github.com/official-stockfish/Stockfish/pull/6640

No functional change
---
 src/movepick.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/movepick.cpp b/src/movepick.cpp
index e4a610afe..23b7facbb 100644
--- a/src/movepick.cpp
+++ b/src/movepick.cpp
@@ -136,7 +136,7 @@ ExtMove* MovePicker::score(MoveList<Type>& ml) {
         threatByLesser[ROOK] =
           pos.attacks_by<KNIGHT>(~us) | pos.attacks_by<BISHOP>(~us) | threatByLesser[KNIGHT];
         threatByLesser[QUEEN] = pos.attacks_by<ROOK>(~us) | threatByLesser[ROOK];
-        threatByLesser[KING]  = pos.attacks_by<QUEEN>(~us) | threatByLesser[QUEEN];
+        threatByLesser[KING]  = 0;
     }
 
     ExtMove* it = cur;