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4 total messages Started by Peter Stein Mon, 09 Jul 1990 22:25
GNUCHESS
#6154
Author: Peter Stein
Date: Mon, 09 Jul 1990 22:25
36 lines
2325 bytes

My apologies to the net for my "easy mode" posting. I have since
recovered the pertinent documentation.

Some new observations:
  1. "book" is not enabled on successive games unless the program is
     exited and started up again. I tried various combinations of
     commands to no avail. What always happens is:
		  1. e2e4  g8f6
		  2. e4e5  f6e4 ??? and loses the knight in a few after
				    3. d2d4.
  2. Yes, I've seen the comments regarding pawn promotion, but I can't
     even promote to a Queen!!
  3. I've tried using "edit" to handle the pawn promotions, but it seems
     there is no way to delete individual pieces. Do I have to use "#"
     to delete the entire board and then enter all the pieces??
  4. So far I've conducted two games between CM 2100 and GNUCHESS. At
     30 seconds a move GNUCHESS won rather handily, CM dropping a piece
     after 17 moves. At 1 minute a move the game fizzled into a dead
     drawn position in 52 moves. Both claimed a draw by repetition!
     This game started as a sharp double king pawn opening with both 
     programs offering their queen pawn for initiative. Suddenly the 
     game degenerated into "brownian motion" as both programs became 
     eager to eliminate material and shuffle their pieces back and 
     forth. The resulting equal material ending should have been a draw
     with best play, but as it was conducted was in fact a win from 
     either side on several occassions!!
	My assessment so far: a. CM has superior opening book
			      b. GNUCHESS seems stronger in the middle
				 game
                              c. both are equally weak in the ending
     NOTE: I've yet to try them at higher levels. I know from experience
     that CM isn't half bad at the higher levels.

			 Your 2200 fish-at-large
Re: GNUCHESS
#6158
Author: Brian Wong
Date: Tue, 10 Jul 1990 05:06
67 lines
2520 bytes
In article <2971@tellab5.tellabs.com>, stein@tellabs.com (Peter Stein) writes:
>
>   2. Yes, I've seen the comments regarding pawn promotion, but I can't
>      even promote to a Queen!!

    to promote to a queen use (e.g.) h7h8q
    under-promotion e.g. a7a8b (bishop)

>   3. I've tried using "edit" to handle the pawn promotions, but it seems
>      there is no way to delete individual pieces. Do I have to use "#"
>      to delete the entire board and then enter all the pieces??

    The following (slightly modified) EditBoard routine will enable you to
    delete an individual piece. e.g. use 'xa1' to delete the piece at a1.

void
EditBoard()
/*
 * Set up a board position. Pieces are entered by typing the piece followed
 * by the location. For example, Nf3 will place a knight on square f3.
 */
{
    short a, r, c, sq, i;
    char s[80];

    ClrScreen();
    UpdateDisplay(0, 0, 1, 0);
    printz(".   exit to main\n");
    printz("#   clear board\n");
    printz("c   change sides\n");
    printz("enter piece & location: \n");

    a = white;
    do {
	scanz("%s", s);
	if (s[0] == '#')
	    for (sq = 0; sq < 64; sq++) {
		board[sq] = no_piece;
		color[sq] = neutral;
	    }
	if (s[0] == 'c' || s[0] == 'C')
	    a = otherside[a];
	c = s[1] - 'a';
	r = s[2] - '1';
	if ((c >= 0) && (c < 8) && (r >= 0) && (r < 8)) {
	    sq = locn(r, c);
	    board[sq] = no_piece;
	    color[sq] = neutral;
	    for (i = no_piece; i <= king; i++)
		if ((s[0] == pxx[i]) || (s[0] == qxx[i])) {
		    board[sq] = i;
		    color[sq] = a;
		    break;
		}
	}
    } while (s[0] != '.');
    for (sq = 0; sq < 64; sq++)
	Mvboard[sq] = (board[sq] != Stboard[sq]) ? 10 : 0;
    GameCnt = 0;
    Game50 = 1;
    ZeroRPT();
    InitializeStats();
    ClrScreen();
    UpdateDisplay(0, 0, 1, 0);
} /* end of EditBoard */

Brian
Aljechin Defence
#6159
Author: Heinola Kari Pekka
Date: Tue, 10 Jul 1990 10:02
23 lines
1423 bytes

stein@tellabs.com (Peter Stein)in his writing about GNUCHESS

     1. "book" is not enabled on successive games unless the program is
	exited and started up again. I tried various combinations of
	commands to no avail. What always happens is:
		     1. e2e4  g8f6
		     2. e4e5  f6e4 ??? and loses the knight in a few after
				       3. d2d4.

I would disagree with this line. It's a playable.
After 3.d2d4 black can continue with f7-f6 oe e7-e6.
A sample line could be 1.e4 Sf6 2. e5 Se4 3.d4 f6 4.Bd3 d5 5. f3 Sg5
6.Bg5 fg 7.f4 g6. Whites black quares are weak.

For more info you might look for Stefan Bueckers Grotesgue Schacher|fnungen.

--
Kari Heinola  
Internet: heinola@tut.fi
TTKK/Mittaustekn. PL 527 SF-33101 Tampere Finland
Tel: 358-(9)31-162456
Re: GNUCHESS
#6160
Author: Urban Koistinen
Date: Tue, 10 Jul 1990 16:25
33 lines
2322 bytes
In article <2971@tellab5.tellabs.com> stein@tellabs.com (Peter Stein) writes:
->Some new observations:
->  3. I've tried using "edit" to handle the pawn promotions, but it seems
->     there is no way to delete individual pieces. Do I have to use "#"
->     to delete the entire board and then enter all the pieces??
cf7 should clear square f7. This worked for me but of course xf7 would be
better.
->  4. So far I've conducted two games between CM 2100 and GNUCHESS. At
->     30 seconds a move GNUCHESS won rather handily, CM dropping a piece
->     after 17 moves. At 1 minute a move the game fizzled into a dead
->     drawn position in 52 moves. Both claimed a draw by repetition!
->     This game started as a sharp double king pawn opening with both 
->     programs offering their queen pawn for initiative. Suddenly the 
->     game degenerated into "brownian motion" as both programs became 
->     eager to eliminate material and shuffle their pieces back and 
->     forth. The resulting equal material ending should have been a draw
->     with best play, but as it was conducted was in fact a win from 
->     either side on several occassions!!
->	My assessment so far: a. CM has superior opening book
->			      b. GNUCHESS seems stronger in the middle
->				 game
->                              c. both are equally weak in the ending
->     NOTE: I've yet to try them at higher levels. I know from experience
->     that CM isn't half bad at the higher levels.
->
->			 Your 2200 fish-at-large
On a sun4 (sparc) I got about 6000 nodes/s.
On a 12 MHz PC-AT-clone I got 300-550 nodes/s.

I have heared that CM is much better on 68kx than on 80x86.

rgs
UK
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