From 26271586cb2dcac34416033ed63ea0611731be0a Mon Sep 17 00:00:00 2001
From: Hisayori Noda <nodchip@gmail.com>
Date: Mon, 24 Jun 2019 23:18:17 +0900
Subject: [PATCH] Added #if to fix compile errors.

---
 src/position.cpp |  7 ++++---
 src/search.cpp   | 10 +++++++---
 src/tt.cpp       |  2 +-
 3 files changed, 12 insertions(+), 7 deletions(-)

diff --git a/src/position.cpp b/src/position.cpp
index b7d5096f..91f3ab8e 100644
--- a/src/position.cpp
+++ b/src/position.cpp
@@ -773,8 +773,10 @@ void Position::do_move(Move m, StateInfo& newSt, bool givesCheck) {
   Piece pc = piece_on(from);
   Piece captured = type_of(m) == ENPASSANT ? make_piece(them, PAWN) : piece_on(to);
 
+#if defined(EVAL_NNUE)
   PieceNumber piece_no0 = PIECE_NUMBER_NB;
   PieceNumber piece_no1 = PIECE_NUMBER_NB;
+#endif  // defined(EVAL_NNUE)
 
   assert(color_of(pc) == us);
   assert(captured == NO_PIECE || color_of(captured) == (type_of(m) != CASTLING ? them : us));
@@ -820,7 +822,9 @@ void Position::do_move(Move m, StateInfo& newSt, bool givesCheck) {
 #endif  // defined(EVAL_NNUE)
 
               board[capsq] = NO_PIECE; // Not done by remove_piece()
+#if defined(EVAL_NNUE)
               evalList.piece_no_list_board[capsq] = PIECE_NUMBER_NB;
+#endif  // defined(EVAL_NNUE)
           }
           else {
 #if defined(EVAL_NNUE)
@@ -1473,9 +1477,6 @@ bool Position::pos_is_ok() const {
 #if defined(EVAL_NNUE)
 PieceNumber Position::piece_no_of(Square sq) const
 {
-  if (piece_on(sq) == NO_PIECE) {
-    sync_cout << *this << sync_endl;
-  }
   assert(piece_on(sq) != NO_PIECE);
   PieceNumber n = evalList.piece_no_of_board(sq);
   assert(is_ok(n));
diff --git a/src/search.cpp b/src/search.cpp
index df88564a..b176e0b9 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -1372,7 +1372,13 @@ moves_loop: // When in check, search starts from here
       prefetch(TT.first_entry(pos.key_after(move)));
 
       // Check for legality just before making the move
-      if (!pos.legal(move))
+      if (
+#if defined(EVAL_LEARN)
+        // HACK: pos.piece_on(from_sq(m)) sometimes will be NO_PIECE during machine learning.
+        !pos.pseudo_legal(move) ||
+#endif // EVAL_LEARN
+        !pos.legal(move)
+        )
       {
           moveCount--;
           continue;
@@ -1382,9 +1388,7 @@ moves_loop: // When in check, search starts from here
       ss->continuationHistory = &thisThread->continuationHistory[pos.moved_piece(move)][to_sq(move)];
 
       // Make and search the move
-      //std::cout << pos << std::endl;
       pos.do_move(move, st, givesCheck);
-      //std::cout << pos << std::endl;
       value = -qsearch<NT>(pos, ss+1, -beta, -alpha, depth - ONE_PLY);
       pos.undo_move(move);
 
diff --git a/src/tt.cpp b/src/tt.cpp
index 0b2bf9e9..21309fd6 100644
--- a/src/tt.cpp
+++ b/src/tt.cpp
@@ -118,7 +118,7 @@ void TranspositionTable::clear() {
 /// TTEntry t2 if its replace value is greater than that of t2.
 
 TTEntry* TranspositionTable::probe(const Key key, bool& found) const {
-#if defined(EVAL_LEARN)
+#if defined(DISABLE_TT)
   return found = false, first_entry(0);
 #else