15 extern void book_clear ();
17 extern void book_open (const char file_name[]);
18 extern bool book_is_open ();
19 extern void book_close ();
21 extern bool is_in_book (const board_t * board);
22 extern int book_move (const board_t * board, bool random);
23 extern void book_moves (list_t * list, const board_t * board);
24 extern void book_disp (const board_t * board);
26 extern void book_learn_move (const board_t * board, int move, int result);
27 extern void book_flush ();
29 #endif // !defined BOOK_H