#if !defined(DATA_INCLUDED)
#  define DATA_INCLUDED

   extern char           version[6];
   extern PLAYING_MODE   mode;
   extern int            batch_mode;
   extern int            call_flag;
   extern int            crafty_rating;
   extern int            opponent_rating;
   extern int            number_auto_kibitzers;
   extern int            number_of_computers;
   extern int            number_of_GMs;
   extern int            number_of_IMs;
   extern int            number_of_specials;
   extern int            time_used;
   extern int            time_used_opponent;
   extern int            cpu_time_used;
   extern int            auto_kibitzing;
   extern int            next_time_check;
   extern int            total_moves;
   extern int            initialized;
   extern int            early_exit;
   extern int            new_game;
   extern char           auto_kibitz_list[64][20];
   extern char           GM_list[256][20];
   extern char           IM_list[256][20];
   extern char           computer_list[256][20];
   extern char           special_list[256][20];
   extern FILE           *input_stream;
   extern FILE           *book_file;
   extern FILE           *books_file;
   extern FILE           *history_file;
   extern FILE           *log_file;
   extern FILE           *auto_file;
   extern FILE           *book_lrn_file;
   extern FILE           *position_file;
   extern FILE           *position_lrn_file;
   extern int            log_id;
   extern int            output_format;
   extern int            EGTBlimit;
   extern char           whisper_text[500];
   extern int            whisper_value;
   extern int            whisper_depth;
   extern int            last_mate_score;
   extern int            last_opponent_move;

   extern int            incheck_depth;
   extern int            onerep_depth;
   extern int            pushpp_depth;
   extern int            recap_depth;
   extern int            singular_depth;
   extern int            threat_depth;

   extern char           pgn_event[32];
   extern char           pgn_date[32];
   extern char           pgn_round[32];
   extern char           pgn_site[32];
   extern char           pgn_white[64];
   extern char           pgn_white_elo[32];
   extern char           pgn_black[64];
   extern char           pgn_black_elo[32];
   extern char           pgn_result[32];
   extern char           log_filename[64];
   extern char           history_filename[64];

   extern int            number_of_solutions;
   extern int            solutions[10];
   extern int            solution_type;
   extern int            default_draw_score;
   extern int            accept_draws;
   extern int            over;
   extern int            ics;
   extern int            auto232;
   extern int            auto232_delay;
   extern int            xboard;
   extern int            whisper;
   extern int            channel;
   extern char           channel_title[32];
   extern char           book_path[128];
   extern char           log_path[128];
   extern char           tb_path[128];
   extern char           cmd_buffer[512];
   extern char           *args[32];
   extern char           buffer[512];
   extern int            nargs;
   extern int            kibitz;
   extern int            move_number;
   extern int            wtm;
   extern int            crafty_is_white;
   extern int            iteration_depth;
   extern int            last_search_value;
   extern int            previous_search_value;
   extern int            search_failed_high;
   extern int            search_failed_low;
   extern int            largest_positional_score;
   extern int            root_alpha;
   extern int            root_beta;
   extern int            root_value;
   extern int            root_wtm;
   extern int            root_move;
   extern int            root_total_white_pieces;
   extern int            root_total_white_pawns;
   extern int            root_total_black_pieces;
   extern int            root_total_black_pawns;
   extern int            nodes_per_second;
   extern int            cpu_percent;
   extern int            opening;
   extern int            middle_game;
   extern int            end_game;
   extern int            analyze_mode;
   extern int            annotate_mode;
   extern int            test_mode;
   extern int            analyze_move_read;
   extern signed char    resign;
   extern signed char    resign_counter;
   extern signed char    resign_count;
   extern signed char    draw_counter;
   extern signed char    draw_count;
   extern char           audible_alarm;
   extern char           hint[16];
   extern int            post;
   extern int            search_depth;
   extern int            search_move;
   extern int            easy_move;
   extern TIME_TYPE      time_type;
   extern int            time_limit;
   extern int            absolute_time_limit;
   extern int            search_time_limit;
   extern int            nodes_between_time_checks;
   extern int            burp;

   extern int            time_abort;
   extern signed char    pondering;   /* thinking on opponent's time     */
   extern signed char    thinking;    /* searching on its time           */
   extern signed char    puzzling;    /* puzzling about a move to ponder */
   extern signed char    booking;     /* searching, following book moves */
   extern signed char    abort_search;
   extern int            ponder;
   extern int            ponder_move;
   extern int            made_predicted_move;
   extern int            force;
   extern int            ponder_moves[220];
   extern int            num_ponder_moves;
   extern char           initial_position[80];

   extern unsigned int   opponent_start_time, opponent_end_time;
   extern unsigned int   program_start_time, program_end_time;
   extern unsigned int   start_time, end_time;
   extern unsigned int   elapsed_start, elapsed_end;
   extern int            predicted;
   extern signed char    transposition_id;

   extern int            ansi;
   extern int            trace_level;
   extern int            max_threads;
   extern int            min_thread_depth;
   extern int            thread_depth;
   extern int            display_options;
   extern unsigned int   noise_level;

   extern int            book_move;
   extern int            moves_out_of_book;
   extern int            book_accept_mask;
   extern int            book_reject_mask;
   extern int            book_random;
   extern float          book_weight_freq;
   extern float          book_weight_wlratio;
   extern float          book_weight_eval;
   extern float          book_weight_learn;
   extern int            book_search_trigger;
   extern int            book_selection_width;
   extern int            show_book;
   extern int            learning;
   extern int            book_learn_eval[LEARN_INTERVAL];
   extern int            book_learn_depth[LEARN_INTERVAL];

   extern int            tc_moves;
   extern int            tc_time;
   extern int            tc_time_remaining;
   extern int            tc_time_remaining_opponent;
   extern int            tc_moves_remaining;
   extern int            tc_secondary_moves;
   extern int            tc_secondary_time;
   extern int            tc_increment;
   extern int            tc_sudden_death;
   extern int            tc_operator_time;
   extern int            tc_safety_margin;
   extern int            no_tricks;
   extern int            computer_opponent;
   extern int            usage_level;
   extern int            log_hash;
   extern int            log_pawn_hash;
   extern int            hash_table_size;
   extern int            pawn_hash_table_size;
   extern int            hash_maska;
   extern int            hash_maskb;
   extern unsigned int   pawn_hash_mask;
   extern HASH_ENTRY      *trans_ref_wa;
   extern HASH_ENTRY      *trans_ref_wb;
   extern HASH_ENTRY      *trans_ref_ba;
   extern HASH_ENTRY      *trans_ref_bb;
   extern PAWN_HASH_ENTRY *pawn_hash_table;

   extern int            history_w[4096], history_b[4096];

   extern int            unblocked_pawns[9];
   extern int            p_values[15];
   extern PATH     last_pv;
   extern int            last_value;

   extern char           white_outpost[64];
   extern char           black_outpost[64];
   extern char           square_color[64];
   extern int            passed_pawn_value[8];
   extern int            supported_passer[8];
   extern int            reduced_material_passer[20];
   extern int            pawn_advance[8];
   extern int            outside_passed[128];
   extern int            pawn_value_w[64];
   extern int            pawn_value_b[64];
   extern int            knight_value_w[64];
   extern int            knight_value_b[64];
   extern int            bishop_value_w[64];
   extern int            bishop_value_b[64];
   extern int            rook_value_w[64];
   extern int            rook_value_b[64];
   extern int            queen_value_w[64];
   extern int            queen_value_b[64];
   extern int            king_value_w[64];
   extern int            king_value_b[64];
   extern char           king_defects_w[64];
   extern char           king_defects_b[64];

   extern int            b_n_mate_dark_squares[64];
   extern int            b_n_mate_light_squares[64];
   extern int            mate[64];

   extern char           push_extensions[64];

   extern signed char    directions[64][64];
   extern BITBOARD       w_pawn_attacks[64];
   extern BITBOARD       b_pawn_attacks[64];
   extern BITBOARD       knight_attacks[64];
   extern BITBOARD       bishop_attacks[64];
#if defined(COMPACT_ATTACKS)
  /* Stuff these into a structure to make the addressing slightly cheaper */
  extern struct at {
    unsigned char which_attack[8][64];
    BITBOARD      file_attack_bitboards[8][MAX_ATTACKS_FROM_SQUARE];
    unsigned char rank_attack_bitboards[8][MAX_ATTACKS_FROM_SQUARE];
    unsigned char length8_mobility[8][MAX_ATTACKS_FROM_SQUARE];
    unsigned char short_mobility[NSHORT_MOBILITY];
  } at;

  extern BITBOARD       diag_attack_bitboards[NDIAG_ATTACKS];
  extern BITBOARD       anti_diag_attack_bitboards[NDIAG_ATTACKS];
  extern DIAG_INFO      diag_info[64];
  extern unsigned char  bishop_shift_rl45[64];
  extern unsigned char  bishop_shift_rr45[64];
#else
  extern BITBOARD       bishop_attacks_rl45[64][256];
  extern BITBOARD       bishop_attacks_rr45[64][256];
  extern int            bishop_mobility_rl45[64][256];
  extern int            bishop_mobility_rr45[64][256];
  extern int            bishop_shift_rl45[64];
  extern int            bishop_shift_rr45[64];
#endif
  extern BITBOARD       rook_attacks[64];
#if !defined(COMPACT_ATTACKS)
  extern BITBOARD       rook_attacks_r0[64][256];
  extern BITBOARD       rook_attacks_rl90[64][256];
  extern int            rook_mobility_r0[64][256];
  extern int            rook_mobility_rl90[64][256];
#endif

   extern POSITION display;

   extern BITBOARD       queen_attacks[64];
   extern BITBOARD       king_attacks[64];
   extern BITBOARD       king_attacks_1[64];
   extern BITBOARD       king_attacks_2[64];
   extern BITBOARD       obstructed[64][64];

   extern unsigned int   w_pawn_random32[64];
   extern unsigned int   b_pawn_random32[64];
   extern BITBOARD       w_pawn_random[64];
   extern BITBOARD       b_pawn_random[64];
   extern BITBOARD       w_knight_random[64];
   extern BITBOARD       b_knight_random[64];
   extern BITBOARD       w_bishop_random[64];
   extern BITBOARD       b_bishop_random[64];
   extern BITBOARD       w_rook_random[64];
   extern BITBOARD       b_rook_random[64];
   extern BITBOARD       w_queen_random[64];
   extern BITBOARD       b_queen_random[64];
   extern BITBOARD       w_king_random[64];
   extern BITBOARD       b_king_random[64];
   extern BITBOARD       enpassant_random[65];
   extern BITBOARD       castle_random_w[2];
   extern BITBOARD       castle_random_b[2];
   extern BITBOARD       wtm_random[2];
   extern BITBOARD       endgame_random_w;
   extern BITBOARD       endgame_random_b;
   extern BITBOARD       w_rooks_random;
   extern BITBOARD       b_rooks_random;

   extern BITBOARD       threat_flag;
   extern BITBOARD       clear_mask[65];
   extern BITBOARD       clear_mask_rl45[65];
   extern BITBOARD       clear_mask_rr45[65];
   extern BITBOARD       clear_mask_rl90[65];
   extern BITBOARD       set_mask[65];
   extern BITBOARD       set_mask_rl45[65];
   extern BITBOARD       set_mask_rr45[65];
   extern BITBOARD       set_mask_rl90[65];
   extern BITBOARD       file_mask[8];
   extern BITBOARD       rank_mask[8];
   extern BITBOARD       mask_not_rank8;
   extern BITBOARD       mask_not_rank1;
   extern BITBOARD       right_side_mask[8];
   extern BITBOARD       left_side_mask[8];
   extern BITBOARD       right_side_empty_mask[8];
   extern BITBOARD       left_side_empty_mask[8];
   extern BITBOARD       right_half_mask, left_half_mask;
   extern BITBOARD       mask_abs7_w, mask_abs7_b;
   extern BITBOARD       pawns_cramp_black;
   extern BITBOARD       pawns_cramp_white;
   extern BITBOARD       mask_advance_2_w;
   extern BITBOARD       mask_advance_2_b;
   extern BITBOARD       mask_left_edge;
   extern BITBOARD       mask_right_edge;
   extern BITBOARD       mask_corner_squares;
   extern BITBOARD       promote_mask_w;
   extern BITBOARD       promote_mask_b;
   extern BITBOARD       mask_G2G3;
   extern BITBOARD       mask_B2B3;
   extern BITBOARD       mask_G6G7;
   extern BITBOARD       mask_B6B7;
   extern BITBOARD       mask_F3H3;
   extern BITBOARD       mask_F6H6;
   extern BITBOARD       mask_A3C3;
   extern BITBOARD       mask_A6C6;
   extern BITBOARD       mask_A7H7;
   extern BITBOARD       mask_A2H2;
   extern BITBOARD       center;

   extern BITBOARD       stonewall_white;
   extern BITBOARD       stonewall_black;

   extern BITBOARD       mask_kr_trapped_w[3];
   extern BITBOARD       mask_qr_trapped_w[3];
   extern BITBOARD       mask_kr_trapped_b[3];
   extern BITBOARD       mask_qr_trapped_b[3];

   extern BITBOARD       good_bishop_kw;
   extern BITBOARD       good_bishop_qw;
   extern BITBOARD       good_bishop_kb;
   extern BITBOARD       good_bishop_qb;

   extern BITBOARD       light_squares;
   extern BITBOARD       dark_squares;
   extern BITBOARD       not_rook_pawns;

   extern BITBOARD       plus1dir[65];
   extern BITBOARD       plus7dir[65];
   extern BITBOARD       plus8dir[65];
   extern BITBOARD       plus9dir[65];
   extern BITBOARD       minus1dir[65];
   extern BITBOARD       minus7dir[65];
   extern BITBOARD       minus8dir[65];
   extern BITBOARD       minus9dir[65];

   extern BITBOARD       mask_eptest[64];
#  if !defined(CRAY1)
     extern BITBOARD       mask_1;
     extern BITBOARD       mask_2;
     extern BITBOARD       mask_3;
     extern BITBOARD       mask_4;
     extern BITBOARD       mask_8;
     extern BITBOARD       mask_16;
     extern BITBOARD       mask_32;
     extern BITBOARD       mask_72;
     extern BITBOARD       mask_80;
     extern BITBOARD       mask_85;
     extern BITBOARD       mask_96;
     extern BITBOARD       mask_107;
     extern BITBOARD       mask_108;
     extern BITBOARD       mask_112;
     extern BITBOARD       mask_118;
     extern BITBOARD       mask_120;
     extern BITBOARD       mask_121;
     extern BITBOARD       mask_127;
#  endif
   extern BITBOARD       mask_clear_entry;

#  if !defined(CRAY1)
     extern unsigned char  first_ones[65536];
     extern unsigned char  last_ones[65536];
#  endif
   extern unsigned char  first_ones_8bit[256];
   extern unsigned char  last_ones_8bit[256];
   extern unsigned char  connected_passed[256];

   extern BITBOARD       mask_kingside_attack_w1;
   extern BITBOARD       mask_kingside_attack_w2;
   extern BITBOARD       mask_kingside_attack_b1;
   extern BITBOARD       mask_kingside_attack_b2;
   extern BITBOARD       mask_queenside_attack_w1;
   extern BITBOARD       mask_queenside_attack_w2;
   extern BITBOARD       mask_queenside_attack_b1;
   extern BITBOARD       mask_queenside_attack_b2;

   extern BITBOARD       mask_pawn_protected_b[64];
   extern BITBOARD       mask_pawn_protected_w[64];
   extern BITBOARD       mask_pawn_isolated[64];
   extern BITBOARD       mask_pawn_passed_w[64];
   extern BITBOARD       mask_pawn_passed_b[64];
   extern BITBOARD       mask_promotion_threat_w[64];
   extern BITBOARD       mask_promotion_threat_b[64];
   extern BITBOARD       mask_pawn_connected[64];
   extern BITBOARD       mask_no_pawn_attacks_w[64];
   extern BITBOARD       mask_no_pawn_attacks_b[64];
   extern BITBOARD       mask_a1_corner;
   extern BITBOARD       mask_a8_corner;
   extern BITBOARD       mask_h1_corner;
   extern BITBOARD       mask_h8_corner;
   extern BITBOARD       white_minor_pieces;
   extern BITBOARD       black_minor_pieces;
   extern BITBOARD       white_center_pawns;
   extern BITBOARD       black_center_pawns;
   extern BITBOARD       white_pawn_race_wtm[64];
   extern BITBOARD       white_pawn_race_btm[64];
   extern BITBOARD       black_pawn_race_wtm[64];
   extern BITBOARD       black_pawn_race_btm[64];

   extern BITBOARD       mask_wk_4th, mask_wq_4th, mask_bk_4th, mask_bq_4th;
   extern BITBOARD       mask_wk_5th, mask_wq_5th, mask_bk_5th, mask_bq_5th;
   extern BOOK_POSITION  book_buffer[BOOK_CLUSTER_SIZE];

   extern unsigned int   thread_start_time[CPUS];
#  if defined(SMP)
   extern TREE               *local[MAX_BLOCKS+1];
   extern TREE               *volatile thread[CPUS];
   extern lock_t             lock_hash, lock_pawn_hash, lock_smp, lock_io;
   extern volatile int       smp_idle;
   extern pthread_attr_t     pthread_attr;
#  else
   extern TREE               local_data[1], *local[1];
#  endif
#endif