proce.c

#include <ctype.h>
#include <limits.h>
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "shogi.h"

/* unacceptable when the program is thinking, or quit pondering */
#define AbortDifficultCommand                                              \
	  if ( game_status & flag_thinking )                               \
	    {                                                              \
	      str_error = str_busy_think;                                  \
	      return -2;                                                   \
	    }                                                              \
	  else if ( game_status & ( flag_pondering | flag_puzzling ) )     \
	    {                                                              \
	      game_status |= flag_quit_ponder;                             \
	      return 2;                                                    \
	    }

#if defined(MINIMUM)
#  define CmdBook(x,y) cmd_book(y);
static int cmd_book( char **lasts );
#else
#  define CmdBook(x,y) cmd_book(x,y);
static int cmd_learn( tree_t * restrict ptree, char **lasts );
static int cmd_book( tree_t * restrict ptree, char **lasts );
#endif

#if ! defined(NO_STDOUT)
static int cmd_stress( char **lasts );
#endif

#if defined(DEKUNOBOU)
static int cmd_dek( char **lasts );
#endif

#if defined(CSA_LAN)
static int proce_csalan( tree_t * restrict ptree );
static int cmd_connect( tree_t * restrict ptree, char **lasts );
#endif

#if defined(MNJ_LAN)
static int proce_mnj( tree_t * restrict ptree );
static int cmd_mnj( tree_t * restrict ptree, char **lasts );
static int cmd_mnjmove( tree_t * restrict ptree, char **lasts, int is_alter );
#endif

#if defined(TLP)
static int cmd_thread( char **lasts );
#endif

#if defined(MPV)
static int cmd_mpv( tree_t * restrict ptree, char **lasts );
#endif

static int proce_cui( tree_t * restrict ptree );
static int cmd_usrmove( tree_t * restrict ptree, const char *str_move,
			char **last );
static int cmd_move_now( void );
static int cmd_ponder( char **lasts );
static int cmd_limit( char **lasts );
static int cmd_quit( void );
static int cmd_beep( char **lasts );
static int cmd_peek( char **lasts );
static int cmd_hash( char **lasts );
static int cmd_ping( void );
static int cmd_suspend( void );
static int cmd_problem( tree_t * restrict ptree, char **lasts );
static int cmd_display( tree_t * restrict ptree, char **lasts );
static int cmd_move( tree_t * restrict ptree, char **lasts );
static int cmd_new( tree_t * restrict ptree, char **lasts );
static int cmd_read( tree_t * restrict ptree, char **lasts );
static int cmd_resign( tree_t * restrict ptree, char **lasts );
static int cmd_time( char **lasts );
static int cmd_undo( tree_t * restrict ptree );    // [HGM] undo
static int cmd_analyze( tree_t * restrict ptree ); // [HGM] analyze
static int cmd_exit( void );
static int is_move( const char *str );


int
procedure( tree_t * restrict ptree )
{
#if defined(CSA_LAN)
  if ( sckt_csa != SCKT_NULL ) { return proce_csalan( ptree ); }
#endif
#if defined(MNJ_LAN)
  if ( sckt_mnj != SCKT_NULL ) { return proce_mnj( ptree ); }
#endif

  return proce_cui( ptree );
}

char *start_pos, start_data[512]; // [HGM] undo: for remembering start position
int move_list[1024], move_ptr;
char analyze_mode;
int exclude_list[MAX_LEGAL_MOVES], all_moves[MAX_LEGAL_MOVES];

#ifdef XBOARD
#define IF(X) else if(!strcmp(command, X))

int myTime, hisTime, movesPerSession, inc, plyNr;
char xboard_mode;

int
xboard_to_CSA( tree_t * restrict ptree, char *in, char *out, int status )
{
  char fromX=in[0], fromY=in[1], toX=in[2], toY=in[3], promo=in[4];
  int piece=0, bonanza_move=0;
  if(fromY == '@') { // drop (contains all info needed to convert it)
    if(fromX >= 'a') fromX += 'A' - 'a';
    switch(fromX) { // encode piece
      case 'P': piece = pawn;   break;
      case 'L': piece = lance;  break;
      case 'N': piece = knight; break;
      case 'S': piece = silver; break;
      case 'G': piece = gold;   break;
      case 'B': piece = bishop; break;
      case 'R': piece = rook;   break;
    }
    bonanza_move = Drop2Move(piece) | To2Move( ('9' - toY)*9 + (toX - 'a') );
    sprintf(out, "00%c%c%s", 'a'+'9'-toX, '1'+'9'-toY, astr_table_piece[piece]);
  } else { // board move (need to figure out moved piece)
    int from = ('9' - fromY)*9 + (fromX - 'a');
    int flag = (promo == '+' ? FLAG_PROMO : 0);
    piece = abs( BOARD[from] ); // this only works when not searching!
printf("# piece from board: %d\n", piece);fflush(stdout);
    if( status & ( flag_pondering | flag_puzzling | flag_thinking ) ) {
      int i, to = ('9' - toY)*9 + (toX - 'a'), l = (status == (flag_pondering | flag_thinking));
      piece = 0; // kludge to force illegal CSA move
      for( i = 0; l ? all_moves[i] : i < root_nmove; i++ ) { // determine the piece from the move list
        int move = (l ? all_moves[i] : root_move_list[i].move);
        if( I2To(move) != to ) continue;
        if( I2From(move) != from ) continue;
        if( (move & FLAG_PROMO) != flag ) continue;
        piece = I2PieceMove( move ); // we found the move; take the piece from it
	bonanza_move = move;
        break;
      }
printf("# piece corrected to %d\n", piece);fflush(stdout);
    }
    if( promo ) piece += promote;
    sprintf(out, "%c%c%c%c%s", 'a'+'9'-fromX, '1'+'9'-fromY, 'a'+'9'-toX, '1'+'9'-toY, astr_table_piece[piece]);
  }
  return bonanza_move;
}

static void
update_exclude_list( tree_t * restrict ptree, int add, char *move_str )
{ // [HGM] exclude: manage list of excluded moves
  char dummy[20];
  int i;
  if( ! exclude_list[0] ) { // nothing is excluded yet; make a copy of root move list;
    for( i = 0; i < root_nmove; i++) all_moves[i] = root_move_list[i].move;
    all_moves[i] = 0;
  }
  if ( ! strcmp(move_str, "all") ) { // all moves
    if( add ) { // copy entire list of legal moves
      for( i = 0; i < root_nmove; i++ ) exclude_list[i] = all_moves[i];
    } else exclude_list[0] = 0; // clear list
  } else { // single move
    int move = xboard_to_CSA( ptree, move_str, dummy, flag_pondering | flag_thinking); // kludge with impossible flag
    for( i = 0; exclude_list[i]; i++ ) if( move == exclude_list[i] ) break;
    if( add ) { // we must add the move
      if( exclude_list[i] ) return; // but it was already in list
      if( i >= MAX_LEGAL_MOVES - 2 ) return; // overflow
      exclude_list[i] = move; exclude_list[i+1] = 0; // append move
    } else { // we must delete the move
      if( exclude_list[i] == 0 ) return; // but it was not there
      while( (exclude_list[i] = exclude_list[i+1]) ) i++; // squeeze it out
    }
  }
}

static void
SetTimes(void)
{ // set white and black times from own and opponent time.
  int moves;
  if(movesPerSession <= 0) moves = 35; else {
    moves = - plyNr/2;
    while(moves <= 0) moves += movesPerSession;
  }
  time_limit = (myTime-inc-30)/(moves+2) + inc;
  time_max_limit = 3*time_limit;
  if(time_max_limit > myTime - 30)time_max_limit = myTime - 30; // keep 0.3 sec margin, as Bonanza reads the clock infrequently
  time_limit *= 10; // msec
  time_max_limit *= 10;
Out("# moves=%d, time=%d inc=%d t=%d, max=%d\n", moves, myTime, inc, time_limit, time_max_limit);
}

static int
proce_xboard(char *line, const char *command, tree_t * restrict ptree)
{ // [HGM] added to make Bonanza.exe a native WinBoard engine
  int value = -100000;
  static char forceMode = 0;
  sscanf(line + strlen(command) + 1, "%d", &value);
Out("# command = '%s'\n", line);
  if(0) ;
  IF("protover") {
#if defined(MPV)
                   Out("feature option=\"MultiPV -spin 1 1 100\"\n");
                   Out("feature option=\"centi-Pawn margin -spin 200 0 25000\"\n");
#endif
                   Out("feature variants=\"shogi\" usermove=1 myname=\"Bonanza " BNZ_VER
                       "\" memory=1 smp=1 debug=1 colors=0 setboard=1 ping=1 sigint=0 exclude=1 done=1\n");
                 }
  IF("new")      { forceMode = plyNr = 0; SetTimes(); return 0; }
  IF("easy")     { strcpy(line, "ponder off"); return 0; }
  IF("hard")     { strcpy(line, "ponder on");  return 0; }
  IF("post")     { ; }
  IF("nopost")   { ; }
  IF("time")     { sscanf(line+5, "%d", &myTime); }
  IF("otim")     { sscanf(line+5, "%d", &hisTime); }
  IF("force")    { forceMode = 1; }
  IF("go")       { forceMode = 0; SetTimes(); plyNr++; strcpy(line, "move"); return 0; }
  IF("memory")   { ; }
  IF("cores")    { sprintf(line, "tlp num %d", value); return 0; }
  IF("sd")       { sprintf(line, "limit depth %d", value); return 0; }
  IF("st")       { ; }
  IF("quit")     { return 0; }
  IF("analyze")  { return 0; }
  IF("exit")     { return 0; }
  IF("variant")  { /* ignore, since it must be Shogi */; }
  IF("setboard") { ; }
  IF("option")   {
                   if(sscanf(line+7, "MultiPV=%d", &value) == 1) { sprintf(line, "mpv num %d", value); return 0; }
                   if(sscanf(line+7, "centi-Pawn margin=%d", &value) == 1) { sprintf(line, "mpv width %d", value); return 0; }
                 }
  IF("level")    { int min, sec; float fsec=0.;
                   if(sscanf(line+6, "%d %d:%d %f", &movesPerSession, &min, &sec, &fsec) != 4)
                      sscanf(line+6, "%d %d %f", &movesPerSession, &min, &fsec);
                   min = 60*min + sec; myTime = hisTime = 100*min; inc = 100 * fsec;
                 }
  IF("usermove") { char buf[20];
                   xboard_to_CSA( ptree, line+9, buf, game_status );
                   if(forceMode || analyze_mode) strcpy(line, "move "), line += 5; else plyNr++, SetTimes();
                   strcpy( line, buf );
                   plyNr++;
                   return 0;
                 }
  IF("undo")     { return 0; }
  IF("remove")   { ; }
  IF("ping")     { Out("pong %d\n", value); }
  IF("exclude")  { update_exclude_list( ptree, 1, line+8 ); strcpy(line, "analyze"); return 0; }
  IF("include")  { update_exclude_list( ptree, 0, line+8 ); strcpy(line, "analyze"); return 0; }
  return 1;
}
#endif

static int
proce_cui( tree_t * restrict ptree )
{
  const char *token;
  char *last;

  token = strtok_r( str_cmdline, str_delimiters, &last );

  if ( token == NULL || *token == '#' ) { return 1; }
#ifdef XBOARD
  { 
    if(xboard_mode) {
      if( proce_xboard(str_cmdline, token, ptree) )  return 1; // command already processed
      Out("# translated command '%s'\n", str_cmdline);         // command translated for processing by Bonanza
      token = strtok_r( str_cmdline, str_delimiters, &last );  // redo parsing
    } else
    if ( ! strcmp( token, "xboard" ) )  { xboard_mode = 1; game_status |= flag_noprompt; return 1; }
  }
#endif
  if ( ! strcmp( token, "analyze" ) )   { return cmd_analyze( ptree ); } // [HGM] analyze
  if ( ! strcmp( token, "exit" ) )      { return cmd_exit(); }           // [HGM] analyze
  if ( ! strcmp( token, "move" ) )      { return cmd_move( ptree, &last ); }
  if ( ! strcmp( token, "undo" ) )      { return cmd_undo( ptree ); }    // [HGM] undo
#if defined(MPV)
  if ( ! strcmp( token, "mpv" ) )       { return cmd_mpv( ptree, &last ); }
#endif
  analyze_mode = 0; // [HGM] analyze: all other commands terminate analysis
  if ( is_move( token ) ) { return cmd_usrmove( ptree, token, &last ); }
  if ( ! strcmp( token, "s" ) )         { return cmd_move_now(); }
  if ( ! strcmp( token, "beep" ) )      { return cmd_beep( &last); }
  if ( ! strcmp( token, "book" ) )      { return CmdBook( ptree, &last ); }
  if ( ! strcmp( token, "display" ) )   { return cmd_display( ptree, &last ); }
  if ( ! strcmp( token, "hash" ) )      { return cmd_hash( &last ); }
  if ( ! strcmp( token, "limit" ) )     { return cmd_limit( &last ); }
  if ( ! strcmp( token, "new" ) )       { return cmd_new( ptree, &last ); }
  if ( ! strcmp( token, "peek" ) )      { return cmd_peek( &last ); }
  if ( ! strcmp( token, "ping" ) )      { return cmd_ping(); }
  if ( ! strcmp( token, "ponder" ) )    { return cmd_ponder( &last ); }
  if ( ! strcmp( token, "problem" ) )   { return cmd_problem( ptree, &last ); }
  if ( ! strcmp( token, "quit" ) )      { return cmd_quit(); }
  if ( ! strcmp( token, "read" ) )      { return cmd_read( ptree, &last ); }
  if ( ! strcmp( token, "resign" ) )    { return cmd_resign( ptree, &last ); }
  if ( ! strcmp( token, "suspend" ) )   { return cmd_suspend(); }
  if ( ! strcmp( token, "time" ) )      { return cmd_time( &last ); }
#if defined(CSA_LAN)
  if ( ! strcmp( token, "connect" ) )   { return cmd_connect( ptree, &last ); }
#endif
#if defined(MNJ_LAN)
  if ( ! strcmp( token, "mnj" ) )       { return cmd_mnj( ptree, &last ); }
#endif
#if defined(DEKUNOBOU)
  if ( ! strcmp( token, "dekunobou" ) ) { return cmd_dek( &last ); }
#endif
#if defined(TLP)
  if ( ! strcmp( token, "tlp" ) )       { return cmd_thread( &last ); }
#endif
#if ! defined(NO_STDOUT)
  if ( ! strcmp( token, "stress" ) )    { return cmd_stress( &last ); }
#endif
#if ! defined(MINIMUM)
  if ( ! strcmp( token, "learn" ) )     { return cmd_learn( ptree, &last ); }
#endif

  str_error = str_bad_cmdline;
  return -2;
}


#if defined(CSA_LAN)
static int
proce_csalan( tree_t * restrict ptree )
{
  const char *token;
  char *last;

  token = strtok_r( str_cmdline, str_delimiters, &last );
    
  if ( token == NULL ) { return 1; }
  if ( *token == ach_turn[client_turn] && is_move( token+1 ) )
    {
      char *ptr;
      long l;

      token = strtok_r( NULL, str_delimiters, &last );
      if ( token == NULL || *token != 'T' )
	{
	  str_error = str_bad_cmdline;
	  return -1;
	}
      
      l = strtol( token+1, &ptr, 0 );
      if ( token+1 == ptr || l == LONG_MAX || l < 1 )
	{
	  str_error = str_bad_cmdline;
	  return -1;
	}

      adjust_time( (unsigned int)l, client_turn );
      Out( "  elapsed: b%u, w%u\n", sec_b_total, sec_w_total );
      return 1;
    }
  if ( *token == ach_turn[Flip(client_turn)] && is_move( token+1 ) )
    {
      return cmd_usrmove( ptree, token+1, &last );
    }
  if ( ! strcmp( token, str_resign ) ) { return cmd_resign( ptree, &last ); }
  if ( ! strcmp( token, "#WIN" )
       || ! strcmp( token, "#LOSE" )
       || ! strcmp( token, "#DRAW" )
       || ! strcmp( token, "#CHUDAN" ) )
    {
      if ( game_status & ( flag_thinking | flag_pondering | flag_puzzling ) )
	{
	  game_status |= flag_suspend;
	  return 2;
	}
      
      ShutdownClient;
      
      if ( client_ngame == client_max_game ) { return cmd_quit(); }

      return client_next_game( ptree, client_str_addr, (int)client_port );
    }
  
  return 1;
}
#endif


#if defined(MNJ_LAN)
static int
proce_mnj( tree_t * restrict ptree )
{
  const char *token;
  char *last;
  int iret;

  token = strtok_r( str_cmdline, str_delimiters, &last );
  if ( token == NULL ) { return 1; }

  if ( ! strcmp( token, "new" ) )
    {
      iret = cmd_suspend();
      if ( iret != 1 ) { return iret; }

      mnj_posi_id = 0;
      iret = cmd_new( ptree, &last );
      if ( iret < 0 ) { return iret; }

      return analyze( ptree );
    }
  if ( ! strcmp( token, "idle" ) )  { return cmd_suspend(); }
  if ( ! strcmp( token, "alter" ) ) { return cmd_mnjmove( ptree, &last, 1 ); }
  if ( ! strcmp( token, "move" ) )  { return cmd_mnjmove( ptree, &last, 0 ); }

  str_error = str_bad_cmdline;
  return -2;
}


static int
cmd_mnjmove( tree_t * restrict ptree, char **lasts, int is_alter )
{
  const char *str1 = strtok_r( NULL, str_delimiters, lasts );
  const char *str2 = strtok_r( NULL, str_delimiters, lasts );
  char *ptr;
  long lid;
  unsigned int move;
  int iret;

  if ( sckt_mnj == SCKT_NULL ||  str1 == NULL || str2 == NULL )
    {
      str_error = str_bad_cmdline;
      return -1;
    }

  lid = strtol( str2, &ptr, 0 );
  if ( ptr == str2 || lid == LONG_MAX || lid < 1 )
    {
      str_error = str_bad_cmdline;
      return -1;
    }

  AbortDifficultCommand;
 
  if ( is_alter ) { unmake_move_root( ptree, mnj_move_last ); };

  iret = interpret_CSA_move( ptree, &move, str1 );
  if ( iret < 0 ) { return iret; }
    
  iret = get_elapsed( &time_turn_start );
  if ( iret < 0 ) { return iret; }

  mnj_posi_id   = (int)lid;
  mnj_move_last = move;

  iret = make_move_root( ptree, move, ( flag_history | flag_time | flag_rep
					| flag_detect_hang
					| flag_rejections ) );
  if ( iret < 0 ) { return iret; }
  
#  if ! defined(NO_STDOUT)
  iret = out_board( ptree, stdout, 0, 0 );
  if ( iret < 0 ) { return iret; }
#  endif

  return analyze( ptree );
}
#endif


static int
do_analyze( tree_t * restrict ptree )
{ // [HGM] analyze: do a ponder search on the current position
  int iret;
  if ( get_elapsed( &time_start ) < 0 ) { return -1; }
  time_limit = time_max_limit = 1e9; // kludge: use huge time to mimic infinity
#ifdef XBOARD
  Out("1 0 0 0 New Search\n"); // make sure lower depth is emitted, so XBoard undestand new search started
#endif
  game_status |= flag_pondering;
  iret         = iterate( ptree, flag_refer_rest );
  game_status &= ~flag_pondering;
  return iret;
}


static int
cmd_undo( tree_t * restrict ptree )
{ // [HGM] undo: restart the game, and feed all moves except the last
  int i, last = move_ptr;
  char *p = start_data;
  if( move_ptr <= 0 ) {
    str_error = "undo past start of game ignored";
    return -2;
  }

  AbortDifficultCommand;

  last--;
  cmd_new( ptree, &p );
  for(i=0; i<last; i++) {
    make_move_root( ptree, move_list[i], 0);
  }

  exclude_list[0] = 0; // [HGM] exclude: exclude list cleared for new position
  if ( analyze_mode ) return do_analyze ( ptree ); // [HGM] analyze: analysis should continue after undo

  return 1;
}


static int
cmd_analyze( tree_t * restrict ptree )
{ // [HGM] analyze: switch on analyze mode, and start analyzing (also used to force a restart)
  AbortDifficultCommand;

  analyze_mode = 1;
  return do_analyze( ptree );
}


static int
cmd_exit( void )
{ // [HGM] analyze: switch off analysis mode
  if ( !analyze_mode ) {
    str_error = "was not analyzing";
    return -2;
  }

  if ( game_status & flag_pondering ) { game_status |= flag_quit_ponder; return 2; }
  analyze_mode = 0;
  exclude_list[0] = 0; // [HGM] exclude: exclude list cleared after analysis

  return 1;
}


static int
is_move( const char *str )
{
  if ( isdigit( (int)str[0] ) && isdigit( (int)str[1] )
       && isdigit( (int)str[2] ) && isdigit( (int)str[3] )
       && isupper( (int)str[4] ) && isupper( (int)str[5] )
       && str[6] == '\0' ) { return 1; }

  return 0;
}


static int
cmd_move_now( void )
{
  if ( game_status & flag_thinking ) { game_status |= flag_move_now; }

  return 1;
}


static int
cmd_usrmove( tree_t * restrict ptree, const char *str_move, char **lasts )
{
  const char *str;
  char *ptr;
  long lelapsed;
  unsigned int move;
  int iret;

  if ( game_status & mask_game_end )
    {
      str_error = str_game_ended;
      return -2;
    }
  
  if ( game_status & flag_thinking )
    {
      str_error = str_busy_think;
      return -2;
    }

  str = strtok_r( NULL, str_delimiters, lasts );
  if ( str == NULL ) { lelapsed = 0; }
  else {
    if ( *str != 'T' )
      {
	str_error = str_bad_cmdline;
	return -2;
      }
    str += 1;
    lelapsed = strtol( str, &ptr, 0 );
    if ( ptr == str || lelapsed == LONG_MAX || lelapsed < 1 )
      {
	str_error = str_bad_cmdline;
	return -2;
      }
  }

  if ( game_status & ( flag_pondering | flag_puzzling ) )
    {
      int i;

      for ( i = 0; i < ponder_nmove; i++ )
	{
	  if ( ! strcmp( str_move, str_CSA_move(ponder_move_list[i]) ) )
	    {
	      break;
	    }
	}
      if ( i == ponder_nmove )
	{
#if defined(CSA_LAN)
	  if ( sckt_csa != SCKT_NULL ) { AbortDifficultCommand; }
#endif

#if defined(DEKUNOBOU)
	  if ( dek_ngame ) { AbortDifficultCommand; }
#endif

#if defined(CSASHOGI)
	  AbortDifficultCommand;
#else
	  str_error = str_illegal_move;
	  return -2;
#endif
	}

      if ( ( game_status & flag_puzzling )
	   || strcmp( str_move, str_CSA_move(ponder_move) ) )
	{
	  ponder_move  = MOVE_PONDER_FAILED;
	  game_status |= flag_quit_ponder;
	  return 2;
	}
      else {
	iret = renovate_time( Flip(root_turn) );
	if ( iret < 0 ) { return iret; }
	if ( lelapsed )
	  {
	    adjust_time( (unsigned int)lelapsed, Flip(root_turn) );
	  }

	history_book_learn[ record_game.moves ].move_played = ponder_move;
	history_book_learn[ record_game.moves ].hand_played
	  = ptree->rep_hand_list[ root_nrep-1 ];
	history_book_learn[ record_game.moves ].key_played
	  = (unsigned int)ptree->rep_board_list[ root_nrep-1 ];

	out_CSA( ptree, &record_game, ponder_move );

	game_status      &= ~flag_pondering;
	game_status      |= flag_thinking;
	n_nobook_move    += 1;
#ifdef XBOARD
      if(!xboard_mode)
#endif
	set_search_limit_time( root_turn );

	OutCsaShogi( "info ponder end\n" );

	str = str_time_symple( time_turn_start - time_start );
	Out( "    %6s          MOVE PREDICTION HIT\n"
	     "  elapsed: b%u, w%u\n", str, sec_b_total, sec_w_total );
	return 1;
      }
    }

  iret = interpret_CSA_move( ptree, &move, str_move );
  if ( iret < 0 ) { return iret; }
  move_evasion_pchk = 0;
  iret = make_move_root( ptree, move, ( flag_rep | flag_history | flag_time
					| flag_rejections
					| flag_detect_hang ) );
  if ( iret < 0 )
      {

#if defined(CSA_LAN)
	if ( sckt_csa != SCKT_NULL )
	  {
	    if ( move_evasion_pchk )
	      {
		str  = str_CSA_move( move_evasion_pchk );
		iret = sckt_out( sckt_csa, "%c%s\n",
				 ach_turn[Flip(root_turn)], str );
		if ( iret < 0 ) { return iret; }
	      }
	    return cmd_suspend();
	  }
#endif

#if defined(DEKUNOBOU)
	if ( dek_ngame )
	  {
	    if ( move_evasion_pchk )
	      {
		dek_win += 1;
		OutDek( "%%TORYO\n" );
	      }
	    return cmd_suspend();
	  }
#endif

	if ( move_evasion_pchk )
	  {
	    str = str_CSA_move( move_evasion_pchk );
#if defined(CSASHOGI)
	    OutCsaShogi( "move%s\n", str );
	    return cmd_suspend();
#else
	    snprintf( str_message, SIZE_MESSAGE, "perpetual check (%c%s)",
		      ach_turn[Flip(root_turn)], str );
	    str_error = str_message;
	    return -2;
#endif
	  }

	return iret;
      }

  if ( lelapsed ) { adjust_time( (unsigned int)lelapsed, Flip(root_turn) ); }
  Out( "  elapsed: b%u, w%u\n", sec_b_total, sec_w_total );

#if defined(CSA_LAN)
  if ( sckt_csa != SCKT_NULL && ( game_status & flag_mated ) )
    {
      iret = sckt_out( sckt_csa, "%%TORYO\n" );
      if ( iret < 0 ) { return iret; }
    }
#endif

#if defined(DEKUNOBOU)
  if ( dek_ngame && ( game_status & flag_drawn ) ) { OutDek( "%%TORYO\n" ); }
#endif

  if ( ! ( game_status & mask_game_end ) )
    {
      iret = com_turn_start( ptree, 0 );
      if ( iret < 0 ) { return iret; }
    }

  return 1;
}


static int
cmd_beep( char **lasts )
{
  const char *str = strtok_r( NULL, str_delimiters, lasts );
  if ( str == NULL )
    {
      str_error = str_bad_cmdline;
      return -2;
    }

  if      ( ! strcmp( str, str_on )  ) {  game_status &= ~flag_nobeep; }
  else if ( ! strcmp( str, str_off ) ) {  game_status |=  flag_nobeep; }
  else {
    str_error = str_bad_cmdline;
    return -2;
  }

  return 1;
}


static int
cmd_peek( char **lasts )
{
  const char *str = strtok_r( NULL, str_delimiters, lasts );

  if ( str == NULL )
    {
      str_error = str_bad_cmdline;
      return -2;
    }

  if      ( ! strcmp( str, str_on )  ) {  game_status &= ~flag_nopeek; }
  else if ( ! strcmp( str, str_off ) ) {  game_status |=  flag_nopeek; }
  else {
    str_error = str_bad_cmdline;
    return -2;
  }

  return 1;
}


static int
cmd_ponder( char **lasts )
{
  const char *str = strtok_r( NULL, str_delimiters, lasts );

  if ( str == NULL )
    {
      str_error = str_bad_cmdline;
      return -2;
    }

  if      ( ! strcmp( str, str_on )  ) {  game_status &= ~flag_noponder; }
  else if ( ! strcmp( str, str_off ) )
    {
      if ( game_status & ( flag_pondering | flag_puzzling ) )
	{
	  game_status |= flag_quit_ponder;
	}
      game_status |= flag_noponder;
    }
  else {
    str_error = str_bad_cmdline;
    return -2;
  }

  return 1;
}


#if ! defined(NO_STDOUT)
static int
cmd_stress( char **lasts )
{
  const char *str = strtok_r( NULL, str_delimiters, lasts );

  if ( str == NULL )
    {
      str_error = str_bad_cmdline;
      return -2;
    }

  if      ( ! strcmp( str, str_on  ) ) { game_status &= ~flag_nostress; }
  else if ( ! strcmp( str, str_off ) ) { game_status |= flag_nostress; }
  else {
    str_error = str_bad_cmdline;
    return -2;
  }

  return 1;
}
#endif


static int
#if defined(MINIMUM)
cmd_book( char **lasts )
#else
cmd_book( tree_t * restrict ptree, char **lasts )
#endif
{
  const char *str = strtok_r( NULL, str_delimiters, lasts );
  int iret = 1;

  if ( str == NULL )
    {
      str_error = str_bad_cmdline;
      return -2;
    }
  if      ( ! strcmp( str, str_on ) )   { iret = book_on(); }
  else if ( ! strcmp( str, str_off ) )  { iret = book_off(); }
  else if ( ! strcmp( str, "narrow" ) ) { game_status |= flag_narrow_book; }
  else if ( ! strcmp( str, "wide" ) )   { game_status &= ~flag_narrow_book; }
#if ! defined(MINIMUM)
  else if ( ! strcmp( str, "create" ) )
    {
      AbortDifficultCommand;

      iret = book_create( ptree );
      if ( iret < 0 ) { return iret; }

      iret = ini_game( ptree, &min_posi_no_handicap, flag_history,
		       NULL, NULL );
      if ( iret < 0 ) { return iret; }

      iret = get_elapsed( &time_turn_start );
    }
#endif
  else {
    str_error = str_bad_cmdline;
    iret = -2;
  }

  return iret;
}


static int
cmd_display( tree_t * restrict ptree, char **lasts )
{
  const char *str = strtok_r( NULL, str_delimiters, lasts );
  char *ptr;
  long l;
  int iret;

  if ( str != NULL )
    {
      l = strtol( str, &ptr, 0 );
      if ( ptr == str )
	{
	  str_error = str_bad_cmdline;
	  return -2;
	}
      if      ( l == 1 ) { game_status &= ~flag_reverse; }
      else if ( l == 2 ) { game_status |= flag_reverse; }
      else {
	str_error = str_bad_cmdline;
	return -2;
      }
    }
  
  Out( "\n" );
  iret = out_board( ptree, stdout, 0, 0 );
  if ( iret < 0 ) { return iret; }
#if ! defined(NO_LOGGING)
  iret = out_board( ptree, pf_log, 0, 0 );
  if ( iret < 0 ) { return iret; }
#endif
  Out( "\n" );

  return 1;
}


static int
cmd_ping( void )
{
  OutCsaShogi( "pong\n" );
  Out( "pong\n" );
  return 1;
}


static int
cmd_hash( char **lasts )
{
  const char *str = strtok_r( NULL, str_delimiters, lasts );
  char *ptr;
  long l;

  if ( str == NULL )
    {
      str_error = str_bad_cmdline;
      return -2;
    }

  if ( ! strcmp( str, "learn" ) )
    {
      str = strtok_r( NULL, str_delimiters, lasts );
      if ( str != NULL && ! strcmp( str, str_on ) )
	{
	  return hash_learn_on();
	}
      else if ( str != NULL && ! strcmp( str, str_off ) )
	{
	  return hash_learn_off();
	}
#if ! defined(MINIMUM)
      else if ( str != NULL && ! strcmp( str, "create" ) )
	{
	  return hash_learn_create();
	}
#endif
      else {
	str_error = str_bad_cmdline;
	return -2;
      }
    }

  l = strtol( str, &ptr, 0 );
  if ( ptr == str || l == LONG_MAX || l < 1 || l > 31 )
    {
      str_error = str_bad_cmdline;
      return -2;
    }
  
  AbortDifficultCommand;
  
  log2_ntrans_table = (int)l;
  memory_free( (void *)ptrans_table_orig );
  return ini_trans_table();
}


static int
cmd_limit( char **lasts )
{
  const char *str = strtok_r( NULL, str_delimiters, lasts );
  char *ptr;
  long l1, l2, l3;

  if ( str == NULL )
    {
      str_error = str_bad_cmdline;
      return -2;
    }

  AbortDifficultCommand;

  if ( ! strcmp( str, "depth" ) )
    {
      str = strtok_r( NULL, str_delimiters, lasts );
      if ( str == NULL )
	{
	  str_error = str_bad_cmdline;
	  return -2;
	}
      l1 = strtol( str, &ptr, 0 );
      if ( ptr == str || l1 == LONG_MAX || l1 < 1 )
	{
	  str_error = str_bad_cmdline;
	  return -2;
	}
      sec_limit_up = UINT_MAX;
      node_limit   = UINT64_MAX;
      depth_limit  = (int)l1;
    }
  else if ( ! strcmp( str, "nodes" ) )
    {
      str = strtok_r( NULL, str_delimiters, lasts );
      if ( str == NULL )
	{
	  str_error = str_bad_cmdline;
	  return -2;
	}
      l1 = strtol( str, &ptr, 0 );
      if ( ptr == str || l1 == LONG_MAX || l1 < 1 )
	{
	  str_error = str_bad_cmdline;
	  return -2;
	}
      sec_limit_up = UINT_MAX;
      depth_limit  = PLY_MAX;
      node_limit   = (uint64_t)l1;
    }
  else if ( ! strcmp( str, "time" ) )
    {
      str = strtok_r( NULL, str_delimiters, lasts );
      if ( str == NULL )
	{
	  str_error = str_bad_cmdline;
	  return -2;
	}

      if ( ! strcmp( str, "extendable" ) )
	{
	  game_status |= flag_time_extendable;
	}
      else if ( ! strcmp( str, "strict" ) )
	{
	  game_status &= ~flag_time_extendable;
	}
      else {
	l1 = strtol( str, &ptr, 0 );
	if ( ptr == str || l1 == LONG_MAX || l1 < 0 )
	  {
	    str_error = str_bad_cmdline;
	    return -2;
	  }

	str = strtok_r( NULL, str_delimiters, lasts );
	if ( str == NULL )
	  {
	    str_error = str_bad_cmdline;
	    return -2;
	  }
	l2 = strtol( str, &ptr, 0 );
	if ( ptr == str || l2 == LONG_MAX || l2 < 0 )
	  {
	    str_error = str_bad_cmdline;
	    return -2;
	  }

	str = strtok_r( NULL, str_delimiters, lasts );
	if ( ! str ) { l3 = -1; }
	else {
	  l3 = strtol( str, &ptr, 0 );
	  if ( ptr == str || l3 >= PLY_MAX || l3 < -1 )
	    {
	      str_error = str_bad_cmdline;
	      return -2;
	    }
	}

	if ( ! ( l1 | l2 ) ) { l2 = 1; }

	depth_limit  = PLY_MAX;
	node_limit   = UINT64_MAX;
	sec_limit    = (unsigned int)l1 * 60U;
	sec_limit_up = (unsigned int)l2;
	if ( l3 == -1 ) { sec_limit_depth = UINT_MAX; }
	else            { sec_limit_depth = (unsigned int)l3; }
      }
    }
  else {
    str_error = str_bad_cmdline;
    return -2;
  }

  return 1;
}


static int
cmd_read( tree_t * restrict ptree, char **lasts )
{
  const char *str1 = strtok_r( NULL, str_delimiters, lasts );
  const char *str2 = strtok_r( NULL, str_delimiters, lasts );
  const char *str3 = strtok_r( NULL, str_delimiters, lasts );
  const char *str_tmp;
  FILE *pf_src, *pf_dest;
  char str_file[SIZE_FILENAME];
  char *ptr;
  unsigned int moves;
  long l;
  int iret, flag, c;

  flag    = flag_history | flag_rep | flag_detect_hang | flag_rejections;
  moves   = UINT_MAX;
  str_tmp = NULL;

  if ( str1 == NULL )
    {
      str_error = str_bad_cmdline;
      return -2;
    }

  if ( str2 != NULL )
    {
      if ( ! strcmp( str2, "t" ) ) { flag |= flag_time; }
      else if ( strcmp( str2, "nil" ) )
	{
	  str_error = str_bad_cmdline;
	  return -2;
	}
    }

  if ( str3 != NULL )
    {
      l = strtol( str3, &ptr, 0 );
      if ( ptr == str3 || l == LONG_MAX || l < 1 )
	{
	  str_error = str_bad_cmdline;
	  return -2;
	}
      moves = (unsigned int)l - 1U;
    }

  AbortDifficultCommand;

  if ( ! strcmp( str1, "." ) )
    {
      str_tmp = "game.cs_";

#if defined(NO_LOGGING)
      strncpy( str_file, "game.csa", SIZE_FILENAME-1 );
#else
      snprintf( str_file, SIZE_FILENAME, "%s/game%03d.csa",
		str_dir_logs, irecord_game );
#endif
      pf_dest = file_open( str_tmp, "w" );
      if ( pf_dest == NULL ) { return -2; }

      pf_src = file_open( str_file, "r" );
      if ( pf_src == NULL )
	{
	  file_close( pf_dest );
	  return -2;
	}

      while ( ( c = getc(pf_src) ) != EOF ) { putc( c, pf_dest ); }

      iret = file_close( pf_src );
      if ( iret < 0 )
	{
	  file_close( pf_dest );
	  return iret;
	}

      iret = file_close( pf_dest );
      if ( iret < 0 ) { return iret; }

      flag |= flag_time;
      str1  = str_tmp;
    }

  iret = read_record( ptree, str1, moves, flag );
  if ( iret < 0 ) { return iret; }

  iret = get_elapsed( &time_turn_start );
  if ( iret < 0 ) { return iret; }

  if ( str_tmp && remove( str_tmp ) )
    {
      out_warning( "remove() failed." );
      return -2;
    }

  return 1;
}


static int
cmd_resign( tree_t * restrict ptree, char **lasts )
{
  const char *str = strtok_r( NULL, str_delimiters, lasts );
  char *ptr;
  long l;

  if ( str == NULL || *str == 'T' )
    {
      AbortDifficultCommand;

      if ( game_status & mask_game_end ) { return 1; }

#if defined(DEKUNOBOU)
      if ( dek_ngame && record_game.moves < 2 )
	{
	  str_error = "ignore resignation";
	  return -2;
	}
#endif

      game_status |= flag_resigned;
      renovate_time( root_turn );
      out_CSA( ptree, &record_game, MOVE_RESIGN );
    }
  else {
    l = strtol( str, &ptr, 0 );
    if ( ptr == str || l == LONG_MAX || l < MT_CAP_PAWN )
      {
	str_error = str_bad_cmdline;
	return -2;
      }
    resign_threshold = (int)l;
  }

  return 1;
}


static int
cmd_move( tree_t * restrict ptree, char **lasts )
{
  const char *str = strtok_r( NULL, str_delimiters, lasts );
  unsigned int move;
  int iret;

  if ( game_status & mask_game_end )
    {
      str_error = str_game_ended;
      return -2;
    }
  
  AbortDifficultCommand;

  if ( str == NULL )
    {
      if ( analyze_mode ) // [HGM] analyze: in analysis mode we cannot set the engine thinking (but perhaps play PV move?)
	  {
	    str_error = str_bad_cmdline;
	    return -2;
	  }

      iret = get_elapsed( &time_turn_start );
      if ( iret < 0 ) { return iret; }
      
      iret = com_turn_start( ptree, 0 );
      if ( iret < 0 ) { return iret; }
    }
  else if ( ! strcmp( str, "restraint" ) )
    {
      if ( analyze_mode ) // [HGM] analyze: in analysis mode we cannot set the engine thinking
	  {
	    str_error = str_bad_cmdline;
	    return -2;
	  }

      iret = get_elapsed( &time_turn_start );
      if ( iret < 0 ) { return iret; }
      
      iret = com_turn_start( ptree, flag_refer_rest );
      if ( iret < 0 ) { return iret; }
    }
  else {

    iret = interpret_CSA_move( ptree, &move, str );
    if ( iret < 0 ) { return iret; }
    
    iret = get_elapsed( &time_turn_start );
    if ( iret < 0 ) { return iret; }
    
#if defined(MNJ_LAN)
    if ( sckt_mnj != SCKT_NULL )
      {
	const char *str2 = strtok_r( NULL, str_delimiters, lasts );
	char *ptr;
	long l;
	if ( str2 ) { l = strtol( str2, &ptr, 0 ); }
	if ( ! str2 || ptr == str || l == LONG_MAX || l < 1 )
	  {
	    str_error = str_bad_cmdline;
	    return -2;
	  }
	mnj_posi_id   = (int)l;
	mnj_move_last = move;
      }
#endif

    iret = make_move_root( ptree, move, ( flag_history | flag_time | flag_rep
					  | flag_detect_hang
					  | flag_rejections ) );
    if ( iret < 0 ) { return iret; }

    exclude_list[0] = 0; // [HGM] exclude: exclude list cleared for new position
    if ( analyze_mode ) return do_analyze ( ptree ); // [HGM] analyze: analysis should continue after feeding moves
  }
  
  return 1;
}


static int
cmd_new( tree_t * restrict ptree, char **lasts )
{
  const char *str1 = strtok_r( NULL, str_delimiters, lasts );
  const char *str2 = strtok_r( NULL, str_delimiters, lasts );
  const min_posi_t *pmp;
  min_posi_t min_posi;
  int iret;

  AbortDifficultCommand;

  start_pos = *lasts; move_ptr = 0; // [HGM] undo: remember start position
  exclude_list[0] = 0; // [HGM] exclude: exclude list cleared for new position

  if ( str1 != NULL )
    {
      strncpy(start_data, str1, 511); // [HGM] undo: remember start position
      memset( &min_posi.asquare, empty, nsquare );
      min_posi.hand_black = min_posi.hand_white = 0;
      iret = read_board_rep1( str1, &min_posi );
      if ( iret < 0 ) { return iret; }

      if ( str2 != NULL )
	{
	  if      ( ! strcmp( str2, "-" ) ) { min_posi.turn_to_move = white; }
	  else if ( ! strcmp( str2, "+" ) ) { min_posi.turn_to_move = black; }
	  else {
	    str_error = str_bad_cmdline;
	    return -2;
	  }
	}
      else { min_posi.turn_to_move = black; }

      pmp = &min_posi;
    }
  else { pmp = &min_posi_no_handicap; }

  iret = ini_game( ptree, pmp, flag_history, NULL, NULL );
  if ( iret < 0 ) { return iret; }

  return get_elapsed( &time_turn_start );
}


static int
cmd_problem( tree_t * restrict ptree, char **lasts )
{
  const char *str = strtok_r( NULL, str_delimiters, lasts );
  char *ptr;
  long l;
  unsigned int nposition;
  int iret;

  if ( str != NULL )
    {
      l = strtol( str, &ptr, 0 );
      if ( ptr == str || l == LONG_MAX || l < 1 )
	{
	  str_error = str_bad_cmdline;
	  return -2;
	}
      nposition = (unsigned int)l;
    }
  else { nposition = UINT_MAX; }

  AbortDifficultCommand;

  iret = record_open( &record_problems, "problem.csa", mode_read, NULL, NULL );
  if ( iret < 0 ) { return iret; }

  iret = solve_problems( ptree, nposition );
  if ( iret < 0 )
    {
      record_close( &record_problems );
      return iret;
    }

  iret = record_close( &record_problems );
  if ( iret < 0 ) { return iret; }

  iret = ini_game( ptree, &min_posi_no_handicap, flag_history, NULL, NULL );
  if ( iret < 0 ) { return iret; }

  return get_elapsed( &time_turn_start );
}


static int
cmd_quit( void )
{
  game_status |= flag_quit;
  return 1;
}


static int
cmd_suspend( void )
{
  if ( game_status & ( flag_pondering | flag_puzzling ) )
    {
      game_status |= flag_quit_ponder;
      return 2;
    }
  
  game_status |= flag_suspend;
  return 1;
}


static int
cmd_time( char **lasts )
{
  const char *str = strtok_r( NULL, str_delimiters, lasts );
  char *ptr;

  if ( str == NULL )
    {
      str_error = str_bad_cmdline;
      return -2;
    }
  else if ( ! strcmp( str, "response" ) )
    {
      long l;
      str = strtok_r( NULL, str_delimiters, lasts );
      if ( str == NULL )
	{
	  str_error = str_bad_cmdline;
	  return -2;
	}
      l = strtol( str, &ptr, 0 );
      if ( ptr == str || l == LONG_MAX || l < 0 || l > 1000 )
	{
	  str_error = str_bad_cmdline;
	  return -2;
	}
      time_response = (unsigned int)l;
      return 1;
    }
  else if ( ! strcmp( str, "remain" ) )
    {
      long l1, l2;
      
      str = strtok_r( NULL, str_delimiters, lasts );
      if ( str == NULL )
	{
	  str_error = str_bad_cmdline;
	  return -2;
	}
      l1 = strtol( str, &ptr, 0 );
      if ( ptr == str || l1 == LONG_MAX || l1 < 0 )
	{
	  str_error = str_bad_cmdline;
	  return -2;
	}

      str = strtok_r( NULL, str_delimiters, lasts );
      if ( str == NULL )
	{
	  str_error = str_bad_cmdline;
	  return -2;
	}
      l2 = strtol( str, &ptr, 0 );
      if ( ptr == str || l2 == LONG_MAX || l2 < 0 )
	{
	  str_error = str_bad_cmdline;
	  return -2;
	}

      if ( sec_limit_up == UINT_MAX )
	{
	  str_error = str_bad_cmdline;
	  return -2;
	}

      return reset_time( (unsigned int)l1, (unsigned int)l2 );
    }

  str_error = str_bad_cmdline;
  return -2;
}


#if !defined(MINIMUM)
/* learn (ini|no-ini) steps games iterations tlp1 tlp2 */
static int
cmd_learn( tree_t * restrict ptree, char **lasts )
{
  const char *str1 = strtok_r( NULL, str_delimiters, lasts );
  const char *str2 = strtok_r( NULL, str_delimiters, lasts );
  const char *str3 = strtok_r( NULL, str_delimiters, lasts );
  const char *str4 = strtok_r( NULL, str_delimiters, lasts );
#  if defined(TLP)
  const char *str5 = strtok_r( NULL, str_delimiters, lasts );
  const char *str6 = strtok_r( NULL, str_delimiters, lasts );
#  endif
  char *ptr;
  long l;
  unsigned int max_games;
  int is_ini, nsteps, max_iterations, nworker1, nworker2, iret;

  if ( str1 == NULL )
    {
      str_error = str_bad_cmdline;
      return -2;
    }
  if      ( ! strcmp( str1, "ini" ) )    { is_ini = 1; }
  else if ( ! strcmp( str1, "no-ini" ) ) { is_ini = 0; }
  else {
    str_error = str_bad_cmdline;
    return -2;
  }

  max_games      = UINT_MAX;
  max_iterations = INT_MAX;
  nworker1 = nworker2 = nsteps = 1;

  if ( str2 != NULL )
    {
      l = strtol( str2, &ptr, 0 );
      if ( ptr == str2 || l == LONG_MAX || l < 1 )
	{
	  str_error = str_bad_cmdline;
	  return -2;
	}
      nsteps = (int)l;
    }

  if ( str3 != NULL )
    {
      l = strtol( str3, &ptr, 0 );
      if ( ptr == str3 || l == LONG_MAX || l == LONG_MIN )
	{
	  str_error = str_bad_cmdline;
	  return -2;
	}
      if ( l > 0 ) { max_games = (unsigned int)l; }
    }

  if ( str4 != NULL )
    {
      l = strtol( str4, &ptr, 0 );
      if ( ptr == str4 || l == LONG_MAX || l == LONG_MIN )
	{
	  str_error = str_bad_cmdline;
	  return -2;
	}
      if ( l > 0 ) { max_iterations = (int)l; }
    }

#  if defined(TLP)
  if ( str5 != NULL )
    {
      l = strtol( str5, &ptr, 0 );
      if ( ptr == str5 || l > TLP_MAX_THREADS || l < 1 )
	{
	  str_error = str_bad_cmdline;
	  return -2;
	}
      nworker1 = (int)l;
    }

  if ( str6 != NULL )
    {
      l = strtol( str6, &ptr, 0 );
      if ( ptr == str6 || l > TLP_MAX_THREADS || l < 1 )
	{
	  str_error = str_bad_cmdline;
	  return -2;
	}
      nworker2 = (int)l;
    }
#  endif

  AbortDifficultCommand;

  log2_ntrans_table = 12;

  memory_free( (void *)ptrans_table_orig );

  iret = ini_trans_table();
  if ( iret < 0 ) { return iret; }

  iret = learn( ptree, is_ini, nsteps, max_games, max_iterations,
		nworker1, nworker2 );
  if ( iret < 0 ) { return -1; }

  iret = ini_game( ptree, &min_posi_no_handicap, flag_history, NULL, NULL );
  if ( iret < 0 ) { return -1; }

  iret = get_elapsed( &time_turn_start );
  if ( iret < 0 ) { return iret; }

  return 1;
}
#endif /* MINIMUM */


#if defined(MPV)
static int
cmd_mpv( tree_t * restrict ptree, char **lasts )
{
  const char *str = strtok_r( NULL, str_delimiters, lasts );
  char *ptr;
  long l;

  if ( str == NULL )
    {
      str_error = str_bad_cmdline;
      return -2;
    }
  else if ( ! strcmp( str, "num" ) )
    {
      str = strtok_r( NULL, str_delimiters, lasts );
      if ( str == NULL )
	{
	  str_error = str_bad_cmdline;
	  return -2;
	}
      l = strtol( str, &ptr, 0 );
      if ( ptr == str || l == LONG_MAX || l < 1 || l > MPV_MAX_PV )
	{
	  str_error = str_bad_cmdline;
	  return -2;
	}

      AbortDifficultCommand;

      mpv_num = (int)l;

      if ( analyze_mode ) return do_analyze ( ptree ); // [HGM] analyze: analysis should continue changing num

      return 1;
    }
  else if ( ! strcmp( str, "width" ) )
    {
      str = strtok_r( NULL, str_delimiters, lasts );
      if ( str == NULL )
	{
	  str_error = str_bad_cmdline;
	  return -2;
	}
      l = strtol( str, &ptr, 0 );
      if ( ptr == str || l == LONG_MAX || l < MT_CAP_PAWN )
	{
	  str_error = str_bad_cmdline;
	  return -2;
	}

      AbortDifficultCommand;

      mpv_width = (int)l;

      if ( analyze_mode ) return do_analyze ( ptree ); // [HGM] analyze: analysis should continue after changing width

      return 1;
    }

  str_error = str_bad_cmdline;
  return -2;
}
#endif


#if defined(TLP)
static int
cmd_thread( char **lasts )
{
  const char *str = strtok_r( NULL, str_delimiters, lasts );

  if ( str == NULL )
    {
      str_error = str_bad_cmdline;
      return -2;
    }
  else if ( ! strcmp( str, "num" ) )
    {
      char *ptr;
      long l;

      str = strtok_r( NULL, str_delimiters, lasts );
      if ( str == NULL )
	{
	  str_error = str_bad_cmdline;
	  return -2;
	}
      l = strtol( str, &ptr, 0 );
      if ( ptr == str || l == LONG_MAX || l < 1 || l > TLP_MAX_THREADS )
	{
	  str_error = str_bad_cmdline;
	  return -2;
	}

      TlpEnd();

      tlp_max = (int)l;

      if ( game_status & ( flag_thinking | flag_pondering | flag_puzzling ) )
	{
	  return tlp_start();
	}
      return 1;
    }

  str_error = str_bad_cmdline;
  return -2;
}
#endif


#if defined(CSA_LAN)
static int
cmd_connect( tree_t * restrict ptree, char **lasts )
{
  const char *str;
  char *ptr;
  long max_games;

  str = strtok_r( NULL, str_delimiters, lasts );
  if ( ! str || ! strcmp( str, "." ) ) { str = "gserver.computer-shogi.org"; }
  strncpy( client_str_addr, str, 255 );
  client_str_addr[255] = '\0';

  str = strtok_r( NULL, str_delimiters, lasts );
  if ( ! str || ! strcmp( str, "." ) ) { str = "4081"; }
  client_port = strtol( str, &ptr, 0 );
  if ( ptr == str || client_port == LONG_MAX || client_port < 0
       || client_port > USHRT_MAX )
    {
      str_error = str_bad_cmdline;
      return -2;
    }

  str = strtok_r( NULL, str_delimiters, lasts );
  if ( ! str || ! strcmp( str, "." ) ) { str = "bonanza_test"; }
  strncpy( client_str_id, str, 255 );
  client_str_id[255] = '\0';

  str = strtok_r( NULL, " \t", lasts );
  if ( ! str || ! strcmp( str, "." ) ) { str = "bonanza_test"; }
  strncpy( client_str_pwd, str, 255 );
  client_str_pwd[255] = '\0';

  str = strtok_r( NULL, str_delimiters, lasts );
  if ( ! str || ! strcmp( str, "." ) ) { client_max_game = INT_MAX; }
  else {
    max_games = strtol( str, &ptr, 0 );
    if ( ptr == str || max_games == LONG_MAX || max_games < 1 )
    {
      str_error = str_bad_cmdline;
      return -2;
    }
    client_max_game = max_games;
  }

  AbortDifficultCommand;

  client_ngame          = 0;

  return client_next_game( ptree, client_str_addr, (int)client_port );
}
#endif


#if defined(MNJ_LAN)
static int
cmd_mnj( tree_t * restrict ptree, char **lasts )
{
  char client_str_addr[256];
  char client_str_id[256];
  const char *str;
  char *ptr;
  unsigned int seed;
  int sd;
  long l;
  int client_port;

  str = strtok_r( NULL, str_delimiters, lasts );
  if ( ! str )
    {
      str_error = str_bad_cmdline;
      return -2;
    }
  l = strtol( str, &ptr, 0 );
  if ( ptr == str || l == LONG_MAX || l < 0 )
    {
      str_error = str_bad_cmdline;
      return -2;
    }
  sd = (int)l;


  str = strtok_r( NULL, str_delimiters, lasts );
  if ( ! str )
    {
      str_error = str_bad_cmdline;
      return -2;
    }
  l = strtol( str, &ptr, 0 );
  if ( ptr == str || l == LONG_MAX || l < 0 )
    {
      str_error = str_bad_cmdline;
      return -2;
    }
  seed = (unsigned int)l;


  str = strtok_r( NULL, str_delimiters, lasts );
  if ( ! str || ! strcmp( str, "." ) ) { str = "localhost"; }
  strncpy( client_str_addr, str, 255 );
  client_str_addr[255] = '\0';


  str = strtok_r( NULL, str_delimiters, lasts );
  if ( ! str || ! strcmp( str, "." ) ) { str = "4082"; }
  l = strtol( str, &ptr, 0 );
  if ( ptr == str || l == LONG_MAX || l < 0 || l > USHRT_MAX )
    {
      str_error = str_bad_cmdline;
      return -2;
    }
  client_port = (int)l;


  str = strtok_r( NULL, str_delimiters, lasts );
  if ( ! str || ! strcmp( str, "." ) ) { str = "bonanza1"; }
  strncpy( client_str_id, str, 255 );
  client_str_id[255] = '\0';

  AbortDifficultCommand;

  resign_threshold  = 65535;
  game_status      |= ( flag_noponder | flag_noprompt );
  if ( mnj_reset_tbl( sd, seed ) < 0 ) { return -1; }

  sckt_mnj = sckt_connect( client_str_addr, (int)client_port );
  if ( sckt_mnj == SCKT_NULL ) { return -2; }

  str_buffer_cmdline[0] = '\0';

  Out( "Sending my name %s", client_str_id );
  sckt_out( sckt_mnj, "%s\n", client_str_id );

  return analyze( ptree );
}
#endif


#if defined(DEKUNOBOU)

static int
cmd_dek( char **lasts )
{
  const char *str = strtok_r( NULL, str_delimiters, lasts );
  char *ptr;
  long l1, l2;
  int iret;

  if ( str == NULL )
    {
      str_error = str_bad_cmdline;
      return -2;
    }
  strncpy( str_message, str, SIZE_MESSAGE-1 );
  str_message[SIZE_MESSAGE-1] = '\0';
  dek_ul_addr = inet_addr( str );

  str = strtok_r( NULL, str_delimiters, lasts );
  if ( str == NULL )
    {
      str_error = str_bad_cmdline;
      return -2;
    }
  l1 = strtol( str, &ptr, 0 );
  if ( ptr == str || l1 == LONG_MAX || l1 < 0 || l1 > USHRT_MAX )
    {
      str_error = str_bad_cmdline;
      return -2;
    }

  str = strtok_r( NULL, str_delimiters, lasts );
  if ( str == NULL )
    {
      str_error = str_bad_cmdline;
      return -2;
    }
  l2 = strtol( str, &ptr, 0 );
  if ( ptr == str || l2 == LONG_MAX || l2 < 0 || l2 > USHRT_MAX )
    {
      str_error = str_bad_cmdline;
      return -2;
    }

  AbortDifficultCommand;

  iret = dek_start( str_message, (int)l1, (int)l2 );
  if ( iret < 0 ) { return iret; }

  Out( "\n- in communication with Dekunobou...\n" );

  str_buffer_cmdline[0] = '\0';
  dek_ngame    = 1;
  dek_lost     = 0;
  dek_win      = 0;
  dek_turn     = 1;
  game_status |= flag_resigned;
  
  return 1;
}

#endif