diff --git a/.gitignore b/.gitignore
index 18b6970..9f2cd5e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,5 @@
 core
+vgcore.*
 GPATH
 GRTAGS
 GTAGS
diff --git a/fentests.txt b/FENTESTS.txt
similarity index 100%
rename from fentests.txt
rename to FENTESTS.txt
diff --git a/Makefile b/Makefile
index 2991294..a41733d 100644
--- a/Makefile
+++ b/Makefile
@@ -26,7 +26,7 @@ BIN=fen pool piece move debug eval bits
 
 CFLAGS += -std=gnu99
 
-CFLAGS += -O2
+#CFLAGS += -O2
 CFLAGS += -g
 CFLAGS += -Wall
 CFLAGS += -Wextra
@@ -67,7 +67,7 @@ $(DEPS): $(SRC) $(INC)
 include $(DEPS)
 
 clean:
-	rm -rf $(OBJ) core $(BIN) $(DEPS)
+	rm -rf $(OBJ) core $(BIN)
 
 #$(OBJ): $(OBJDIR)/%.o: $(SRCDIR)/%.c
 #	@mkdir -p $(@D)
diff --git a/make.deps b/make.deps
index 5fed552..947bf82 100644
--- a/make.deps
+++ b/make.deps
@@ -4,10 +4,10 @@
  src/debug.h src/board.h src/piece.h src/list.h src/pool.h
 ./obj/fen.o:: src/fen.c src/debug.h src/chessdefs.h src/bits.h src/position.h \
  src/board.h src/piece.h src/list.h src/pool.h src/fen.h
-./obj/move.o:: src/move.c src/chessdefs.h src/bits.h src/debug.h src/piece.h \
- src/board.h src/position.h src/pool.h src/list.h src/move.h
+./obj/move.o:: src/move.c src/chessdefs.h src/bits.h src/debug.h src/board.h \
+ src/piece.h src/list.h src/pool.h src/move.h src/position.h
 ./obj/piece.o:: src/piece.c src/chessdefs.h src/bits.h src/debug.h src/piece.h \
- src/board.h src/position.h src/pool.h src/list.h
+ src/list.h src/pool.h src/board.h src/position.h
 ./obj/pool.o:: src/pool.c src/list.h src/pool.h src/debug.h
 ./obj/position.o:: src/position.c src/chessdefs.h src/bits.h src/debug.h \
  src/position.h src/board.h src/piece.h src/list.h src/pool.h src/fen.h
diff --git a/src/board.h b/src/board.h
index cb9ef80..296b5de 100644
--- a/src/board.h
+++ b/src/board.h
@@ -17,7 +17,6 @@
 #include <stdint.h>
 #include "chessdefs.h"
 #include "piece.h"
-#include "position.h"
 
 typedef struct board_s {
     piece_t piece;
diff --git a/src/move.c b/src/move.c
index 3593237..683dee1 100644
--- a/src/move.c
+++ b/src/move.c
@@ -14,6 +14,7 @@
 #include <malloc.h>
 #include <ctype.h>
 #include "chessdefs.h"
+#include "board.h"
 #include "piece.h"
 #include "move.h"
 #include "list.h"
@@ -149,6 +150,7 @@ static move_t *move_add(pos_t *pos, piece_t piece, square_t from,
     move->to = to;
     move->taken = board[to].piece;
     move->flags = M_NORMAL;
+    move->pos = NULL;
     if (move->taken)
         move->flags |= M_CAPTURE;
     list_add(&move->list, &pos->moves);
@@ -472,6 +474,16 @@ int moves_gen(pos_t *pos, bool color, bool doit)
     return count;
 }
 
+int move_doit(pos_t *pos, move_t *move)
+{
+#   ifdef DEBUG_MOVE_TOTO
+    log_f(1, "color:%s doit:%d\n", color? "Black": "White", doit);
+#   endif
+    if (pos && move)
+        return 1;
+    return 0;
+}
+
 #ifdef BIN_move
 #include "fen.h"
 int main(int ac, char**av)
diff --git a/src/move.h b/src/move.h
index 0062193..c7dd420 100644
--- a/src/move.h
+++ b/src/move.h
@@ -60,4 +60,6 @@ int pseudo_moves_gen(pos_t *pos, piece_list_t *piece, bool doit);
 int pseudo_moves_pawn(pos_t *pos, piece_list_t *piece, bool doit);
 int moves_gen(pos_t *pos, bool color, bool doit);
 
+int move_doit(pos_t *pos, move_t *move);
+
 #endif  /* MODE_H */
diff --git a/src/piece.c b/src/piece.c
index 31682ba..8e777fb 100644
--- a/src/piece.c
+++ b/src/piece.c
@@ -12,10 +12,13 @@
  */
 
 #include <malloc.h>
+#include <ctype.h>
+
 #include "chessdefs.h"
 #include "piece.h"
-#include "ctype.h"
+#include "board.h"
 #include "debug.h"
+#include "position.h"
 
 static pool_t *pieces_pool;
 
diff --git a/src/piece.h b/src/piece.h
index 357a8ab..4e28b2a 100644
--- a/src/piece.h
+++ b/src/piece.h
@@ -17,9 +17,7 @@
 #include <ctype.h>
 
 #include "chessdefs.h"
-#include "board.h"
 #include "list.h"
-#include "position.h"
 #include "pool.h"
 
 #define PIECE_DEFAULT_VALUE 0
diff --git a/src/position.c b/src/position.c
index 58db82b..426eef2 100644
--- a/src/position.c
+++ b/src/position.c
@@ -168,14 +168,35 @@ pos_t *pos_get()
     pos_t *pos = pool_get(pos_pool);
     if (pos) {
         //printf("sizeof(board)=%lu\n", sizeof (board_t));
-        pos->board = malloc(sizeof (board_t)*BOARDSIZE);
+        //pos->board = malloc(sizeof (board_t)*BOARDSIZE);
+        //printf("board mem: %p-%p\n", pos->board, pos->board+sizeof (board_t));
+        //if (pos->board)
+        pos_clear(pos);
+        //else {
+        //    free(pos);
+        //    pos = NULL;
+        //}
+    }
+    return pos;
+}
+
+/* TODO: merge with pos_get - NULL for init, non null for duplicate */
+pos_t *pos_dup(pos_t *pos)
+{
+    pos_t *new = pool_get(pos_pool);
+    if (new) {
+        //printf("sizeof(board)=%lu\n", sizeof (board_t));
+        //new->board = malloc(sizeof (board_t)*BOARDSIZE);
+        //if (!new->board) {
+        //    pool_add(pos_pool, new);
+        //    return NULL;
+        //}
+
+        *new = *pos;
+        INIT_LIST_HEAD(&new->pieces[WHITE]);
+        INIT_LIST_HEAD(&new->pieces[BLACK]);
+        INIT_LIST_HEAD(&new->moves);
         //printf("board mem: %p-%p\n", pos->board, pos->board+sizeof (board_t));
-        if (pos->board)
-            pos_clear(pos);
-        else {
-            free(pos);
-            pos = NULL;
-        }
     }
     return pos;
 }
diff --git a/src/position.h b/src/position.h
index 2b12fa7..160f01b 100644
--- a/src/position.h
+++ b/src/position.h
@@ -27,7 +27,7 @@ typedef struct pos_s {
     u16 curmove;
     u16 mobility[2];
     eval_t eval;
-    board_t *board;
+    board_t board[BOARDSIZE];
 
     square_t en_passant;
     square_t king[2];
@@ -46,5 +46,6 @@ pos_t *pos_startpos(pos_t *pos);
 pos_t *pos_create();
 pool_t *pos_pool_init();
 pos_t *pos_get();
+pos_t *pos_dup(pos_t *pos);
 
 #endif