2 files changed, 17 insertions, 7 deletions
diff --git a/src/bot.cpp b/src/bot.cpp
index 3ea6620..c269665 100644
--- a/src/bot.cpp
+++ b/src/bot.cpp
@@ -138,7 +138,7 @@ static int quiescenceSearch(Game *b, int qdepth, int alpha, int beta, int ply) {
     return beta;
   }
 }
-static int minimax(int depth, Game *b, int alpha, int beta, int ply) {
+static int search(int depth, Game *b, int alpha, int beta, int ply) {
   const uint64_t gameHash = GenerateZobristKey(b);
 
   auto repIt = b->ThreeFoldMap.find(gameHash);
@@ -190,7 +190,7 @@ static int minimax(int depth, Game *b, int alpha, int beta, int ply) {
     for (Move move : moves) {
       UndoMove undo = MakeMove(move, b);
 
-      int score = minimax(depth - 1, b, alpha, beta, ply + 1);
+      int score = search(depth - 1, b, alpha, beta, ply + 1);
 
       UnMakeMove(undo, b);
 
@@ -216,7 +216,7 @@ static int minimax(int depth, Game *b, int alpha, int beta, int ply) {
     for (Move move : moves) {
       UndoMove undo = MakeMove(move, b);
 
-      int score = minimax(depth - 1, b, alpha, beta, ply + 1);
+      int score = search(depth - 1, b, alpha, beta, ply + 1);
 
       UnMakeMove(undo, b);
 
@@ -261,7 +261,7 @@ static SearchResult SearchDepth(Game *b, int depth, const Move *previousBest) {
   for (Move move : moves) {
     UndoMove undo = MakeMove(move, b);
 
-    int eval = minimax(depth - 1, b, -INF, INF, 1);
+    int eval = search(depth - 1, b, -INF, INF, 1);
 
     UnMakeMove(undo, b);
 
diff --git a/src/evaluate.cpp b/src/evaluate.cpp
index a777e0c..3e4f72f 100644
--- a/src/evaluate.cpp
+++ b/src/evaluate.cpp
@@ -1,7 +1,9 @@
 #include "evaluate.hpp"
 #include "board/board.hpp"
 #include "moves.hpp"
+#include <cassert>
 #include <cstdlib>
+#include <iostream>
 
 constexpr int PAWN_VALUE = 100;
 constexpr int KNIGHT_VALUE = 320;
@@ -105,10 +107,18 @@ static int ForceKingToEdgeBonus(const Position enemyKing,
 int CountBoardMaterial(Game *g) {
   int score = 0;
 
-  for (int i = 0; i < 64; i++) {
+  uint64_t piece_bitboard = g->PieceBitboard;
+  while (piece_bitboard != 0) {
+    int i = __builtin_ctzll(piece_bitboard);
+    piece_bitboard &= piece_bitboard - 1;
+
     const Piece piece = g->pieces[i];
-    if (piece.type == NONEPIECE)
-      continue;
+
+    if (piece.type == NONEPIECE) {
+      assert(false && "in piece bitboard found none piece");
+      std::cout << "Internal error\n";
+      exit(1);
+    }
 
     int value = 0;