1 files changed, 8 insertions, 35 deletions

diff --git a/src/see.c b/src/see.c
index 4ba62ad..dc308d5 100755
--- a/src/see.c
+++ b/src/see.c
@@ -167,39 +167,12 @@ Return value:
 // out-of-line FirstBit/LastBit -- worth avoiding call overhead in a
 // per-move-generated, per-node hot path like this one.
 //
-static BITBOARD
-_BuildOccupiedBB(IN POSITION *pos)
-/**
-
-Routine description:
-
-    Full-board occupancy (both colors, every piece including pawns
-    and kings), built from the incrementally-maintained bbPieces[2][8]
-    and bbPawns[2] fields plus the king mailbox array
-    (cNonPawns[.][0], a single square per side -- a bitboard for that
-    adds nothing). All O(1) ORs now that bbPawns exists; this used to
-    loop cPawns[2][8] (up to 16 iterations) to build the pawn portion,
-    which ran on every single call regardless of how few pawns were
-    actually relevant.
-
-Parameters:
-
-    POSITION *pos
-
-Return value:
-
-    BITBOARD
-
-**/
-{
-    return (pos->bbPieces[WHITE][KNIGHT] | pos->bbPieces[WHITE][BISHOP] |
-            pos->bbPieces[WHITE][ROOK]   | pos->bbPieces[WHITE][QUEEN]  |
-            pos->bbPieces[BLACK][KNIGHT] | pos->bbPieces[BLACK][BISHOP] |
-            pos->bbPieces[BLACK][ROOK]   | pos->bbPieces[BLACK][QUEEN]  |
-            pos->bbPawns[WHITE]          | pos->bbPawns[BLACK]          |
-            COOR_TO_BB(pos->cNonPawns[WHITE][0]) |
-            COOR_TO_BB(pos->cNonPawns[BLACK][0]));
-}
+// (This file used to have its own static _BuildOccupiedBB here,
+// byte-for-byte identical to generate.c's _BuildFullOccupiedBB --
+// removed 2026-09-05 now that pos->bbOccupied is incrementally
+// maintained directly on POSITION; see board_representation/
+// EVAL.md section 0. Callers below just read pos->bbOccupied.)
+//
 
 // Non-static (unlike its historical file-local status) so
 // generate.c's Part B (_GenerateEscapes) bitboard work can call it
@@ -249,7 +222,7 @@ Parameters:
     POSITION *pos,
     COOR cSquare : target square
     ULONG uSide : side whose attackers on cSquare we want
-    BITBOARD bbOccupied : full-board occupancy (see _BuildOccupiedBB)
+    BITBOARD bbOccupied : full-board occupancy (see pos->bbOccupied)
 
 Return value:
 
@@ -412,7 +385,7 @@ Return value:
     //
     // Knights/bishops/rooks/queens/king, via the bitboard primitive.
     //
-    bbOccupied = _BuildOccupiedBB(pos);
+    bbOccupied = pos->bbOccupied;
     bbAttackers = _WhoAttacksSquareBB(pos, cSquare, uSide, bbOccupied);
     while (bbAttackers)
     {