extern void   init_io();
extern void   init_io_for_one_game();
extern void   print_statistics();
extern void   print_message();
extern void   print_my_move();
extern void   print_your_move();
extern void   print_move();
extern void   print_state();
extern void   print_board();
extern Square   get_users_move();
extern void   start_game();
extern bool   another_game();


#define MYMOVE     0
#define YOURMOVE   1
#define NOGAME     2

extern void   show_status();