N.E.G. 1.0 released
Moderators: hgm, chrisw, Rebel
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- Full name: H G Muller
Re: N.E.G. 1.0 released
Interesting strategy improvement: I can reduce the number of stalemates in positions where it is several Queens ahead to almost zero by refusing to capture the last minor. Only in cases where the minor happens to get pinned this still produces the occasional stalemate.
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Re: N.E.G. 1.0 released
There is no link to download this engine and your web site only shows NEG 0.3 for download........Thx AAR
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- Posts: 28185
- Joined: Fri Mar 10, 2006 10:06 am
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- Full name: H G Muller
Re: N.E.G. 1.0 released
I uploaded the new versions to my website now. It even includes an x64 Linux build.
This is for the version with stalemate avoidance (N.E.G. 1.2), which refuses to take the opponent's last minor when it is more than a Queen ahead.
This is for the version with stalemate avoidance (N.E.G. 1.2), which refuses to take the opponent's last minor when it is more than a Queen ahead.
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- Posts: 659
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- Location: France
- Full name: Roland Chastain
Re: N.E.G. 1.0 released
It looks like I discovered a bug in NEG 1.2. Here is the PGN file.
[pgn][Event "?"]
[Site "?"]
[Date "2019.12.28"]
[Round "5"]
[White "Floyd 0.9"]
[Black "NEG 1.2"]
[Result "1-0"]
[ECO "A04"]
[Opening "Reti Opening"]
[PlyCount "45"]
[Termination "illegal move"]
[TimeControl "40/60"]
1. Nf3 {+0.20/9 0.54s} Nc6 {+0.06/2 0s} 2. d4 {+0.36/10 1.2s} Nf6 {-0.24/2 0s}
3. c4 {+0.29/10 0.58s} a5 {-0.24/2 0s} 4. d5 {+0.74/11 0.79s} Nb4 {-1.10/2 0s}
5. Nc3 {+0.79/11 0.95s} c5 {-2.09/2 0s} 6. a3 {+1.15/11 0.60s} Na6 {+0.26/2 0s}
7. Qa4 {+1.11/11 0.63s} e6 {-0.14/2 0s} 8. e4 {+1.38/10 0.82s} Bd6 {-0.14/2 0s}
9. e5 {+2.45/9 0.80s} Be7 {+2.11/2 0s} 10. d6 {+3.24/10 0.55s} Bf8 {+2.11/2 0s}
11. exf6 {+3.49/10 0.91s} gxf6 {-0.98/2 0s} 12. Nb5 {+3.46/11 0.58s}
h5 {-0.08/2 0s} 13. Be2 {+3.71/9 0.64s} Bg7 {-1.10/2 0s}
14. O-O {+3.90/10 0.71s} b6 {-1.00/2 0s} 15. Bf4 {+3.98/10 0.67s}
Bb7 {-1.00/2 0s} 16. Nc7+ {+4.53/9 0.60s} Nxc7 {+1.14/2 0s}
17. dxc7 {+3.26/11 0.79s} Qc8 {-1.00/2 0s} 18. Qb5 {+3.02/12 2.2s}
Be4 {-1.00/2 0s} 19. Qxb6 {+4.59/9 0.80s} d5 {-0.22/2 0s}
20. cxd5 {+6.87/8 0.66s} exd5 {+1.20/2 0s} 21. Qxc5 {+13.99/8 3.4s}
f5 {-0.13/2 0s} 22. Bb5+ {+M9/6 0.71s} Qd7 {-6.00/2 0s}
23. c8=R+ {+M7/4 0.004s, Black makes an illegal move: g7b2} 1-0[/pgn]
[pgn][Event "?"]
[Site "?"]
[Date "2019.12.28"]
[Round "5"]
[White "Floyd 0.9"]
[Black "NEG 1.2"]
[Result "1-0"]
[ECO "A04"]
[Opening "Reti Opening"]
[PlyCount "45"]
[Termination "illegal move"]
[TimeControl "40/60"]
1. Nf3 {+0.20/9 0.54s} Nc6 {+0.06/2 0s} 2. d4 {+0.36/10 1.2s} Nf6 {-0.24/2 0s}
3. c4 {+0.29/10 0.58s} a5 {-0.24/2 0s} 4. d5 {+0.74/11 0.79s} Nb4 {-1.10/2 0s}
5. Nc3 {+0.79/11 0.95s} c5 {-2.09/2 0s} 6. a3 {+1.15/11 0.60s} Na6 {+0.26/2 0s}
7. Qa4 {+1.11/11 0.63s} e6 {-0.14/2 0s} 8. e4 {+1.38/10 0.82s} Bd6 {-0.14/2 0s}
9. e5 {+2.45/9 0.80s} Be7 {+2.11/2 0s} 10. d6 {+3.24/10 0.55s} Bf8 {+2.11/2 0s}
11. exf6 {+3.49/10 0.91s} gxf6 {-0.98/2 0s} 12. Nb5 {+3.46/11 0.58s}
h5 {-0.08/2 0s} 13. Be2 {+3.71/9 0.64s} Bg7 {-1.10/2 0s}
14. O-O {+3.90/10 0.71s} b6 {-1.00/2 0s} 15. Bf4 {+3.98/10 0.67s}
Bb7 {-1.00/2 0s} 16. Nc7+ {+4.53/9 0.60s} Nxc7 {+1.14/2 0s}
17. dxc7 {+3.26/11 0.79s} Qc8 {-1.00/2 0s} 18. Qb5 {+3.02/12 2.2s}
Be4 {-1.00/2 0s} 19. Qxb6 {+4.59/9 0.80s} d5 {-0.22/2 0s}
20. cxd5 {+6.87/8 0.66s} exd5 {+1.20/2 0s} 21. Qxc5 {+13.99/8 3.4s}
f5 {-0.13/2 0s} 22. Bb5+ {+M9/6 0.71s} Qd7 {-6.00/2 0s}
23. c8=R+ {+M7/4 0.004s, Black makes an illegal move: g7b2} 1-0[/pgn]
Qui trop embrasse mal étreint.
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- Posts: 28185
- Joined: Fri Mar 10, 2006 10:06 am
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- Full name: H G Muller
Re: N.E.G. 1.0 released
Indeed. I see that it only recognizes a move as a promotion when there is a 'q' suffix, and otherwise doesn't promote it at all. So the Pawn remains a Pawn, and there is no check to resolve.
BTW, the most obvious and annoying weakness of N.E.G. is that it does not consider capture of an attacker as solving the threat it makes. So after 1. e4 e5 2. Bb5+ Nc6 3. d3 d6 4. Bxc6+ it would play Ke7 to solve the check (which is of course the dominant threat, with a King at stake), rather than bxc6 (which in its eyes only gains a Bishop). Especially for threats exerted by only a single attacker it should be relatively easy to cure that.
BTW, the most obvious and annoying weakness of N.E.G. is that it does not consider capture of an attacker as solving the threat it makes. So after 1. e4 e5 2. Bb5+ Nc6 3. d3 d6 4. Bxc6+ it would play Ke7 to solve the check (which is of course the dominant threat, with a King at stake), rather than bxc6 (which in its eyes only gains a Bishop). Especially for threats exerted by only a single attacker it should be relatively easy to cure that.
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- Posts: 659
- Joined: Sat Jun 08, 2013 10:07 am
- Location: France
- Full name: Roland Chastain
Re: N.E.G. 1.0 released
I see. I could have suspected that the problem came from the unusual promotion on rook.
Interesting. I like when I understand how an engine "thinks". I have just taken a look at the source code. It's a very beautiful program. If I had time, I would like to try a conversion to Pascal.hgm wrote: ↑Sat Dec 28, 2019 11:30 pm BTW, the most obvious and annoying weakness of N.E.G. is that it does not consider capture of an attacker as solving the threat it makes. So after 1. e4 e5 2. Bb5+ Nc6 3. d3 d6 4. Bxc6+ it would play Ke7 to solve the check (which is of course the dominant threat, with a King at stake), rather than bxc6 (which in its eyes only gains a Bishop). Especially for threats exerted by only a single attacker it should be relatively easy to cure that.
Qui trop embrasse mal étreint.
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- Posts: 659
- Joined: Sat Jun 08, 2013 10:07 am
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- Full name: Roland Chastain
Re: N.E.G. 1.0 released
@H.G.Muller
By the way, may I ask if you still have the source code of older versions? I have a Windows binary of N.E.G. 0.3, that I often use. I would have liked (if possible) to see the source code.
Same question for Ram 2.0.
It isn't easy to search for these engines on the web, because the names are too short.
By the way, may I ask if you still have the source code of older versions? I have a Windows binary of N.E.G. 0.3, that I often use. I would have liked (if possible) to see the source code.
Same question for Ram 2.0.
It isn't easy to search for these engines on the web, because the names are too short.
Qui trop embrasse mal étreint.
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- Posts: 28185
- Joined: Fri Mar 10, 2006 10:06 am
- Location: Amsterdam
- Full name: H G Muller
Re: N.E.G. 1.0 released
I uploaded a fixed version (1.3) to the same link (souce & Windows .exe). It now also tests for r, b or n suffix on the input move, and performs the indicated promotion if it finds one.
I guess it would need an extra run of the move generator to make it realize that capture can solve a solo threat: it would run for the opponent with a task function somewhat similar to Score(), which would ignore any move that does not capture or that goes to square with more than one attacker, and remember the score of the best such move at the from-square (initialized to 0 before the MoveGen). In the routine Score() this value for the to-square should then be added to the score.
I guess this would already give a big improvement. It would be more difficult to also apply this to threats with more than a single attacker. Because how much that matters would depend on what the other attacker is. Reducing a 2-attacker-1-protector threat (which would gain the entire victim) to 1 vs 1 might not make the entire threat go away, as the remaining attacker could be of lower value than the victim. But perhaps it could not hurt much to assume it does. As usually one of the attackers would be more valuable than the victim (or the threat could have been cashed before), and thus no threat when we take out its support. And when we take the more valuable attacker the opponent is under pressure to take that back first, rather than cash the the threat.
I guess it would need an extra run of the move generator to make it realize that capture can solve a solo threat: it would run for the opponent with a task function somewhat similar to Score(), which would ignore any move that does not capture or that goes to square with more than one attacker, and remember the score of the best such move at the from-square (initialized to 0 before the MoveGen). In the routine Score() this value for the to-square should then be added to the score.
I guess this would already give a big improvement. It would be more difficult to also apply this to threats with more than a single attacker. Because how much that matters would depend on what the other attacker is. Reducing a 2-attacker-1-protector threat (which would gain the entire victim) to 1 vs 1 might not make the entire threat go away, as the remaining attacker could be of lower value than the victim. But perhaps it could not hurt much to assume it does. As usually one of the attackers would be more valuable than the victim (or the threat could have been cashed before), and thus no threat when we take out its support. And when we take the more valuable attacker the opponent is under pressure to take that back first, rather than cash the the threat.
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- Posts: 28185
- Joined: Fri Mar 10, 2006 10:06 am
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- Full name: H G Muller
Re: N.E.G. 1.0 released
N.E.G. 0.3 was actually a slightly modified version of my regular alpha-beta engine Joker, which was closed source. I haven't worked on that since 2008, and I am not even sure I do have sources, as this is many computers ago.Roland Chastain wrote: ↑Sun Dec 29, 2019 11:22 am @H.G.Muller
By the way, may I ask if you still have the source code of older versions? I have a Windows binary of N.E.G. 0.3, that I often use. I would have liked (if possible) to see the source code.
Same question for Ram 2.0.
It isn't easy to search for these engines on the web, because the names are too short.
The Ram 2.0 source is below. It should be linked with the MersenneTwister random generator.
Code: Select all
#include <stdio.h>
#ifdef WIN32
# include <windows.h>
#else
# include <sys/time.h>
# include <sys/times.h>
# include <unistd.h>
int GetTickCount()
{ struct timeval t;
gettimeofday(&t, NULL);
return t.tv_sec*1000 + t.tv_usec/1000;
}
#endif
#define WHITE 8
#define BLACK 16
#define COLOR (WHITE|BLACK)
double genrand64_real2(void);
int MTinit(int t);
unsigned int MyRandom(unsigned int n)
{
unsigned int res = n*genrand64_real2();
return res;
}
typedef void Func(int stm, int from, int to, void *closure);
typedef int Board[128];
int value[8] = { 0, 100, 100, 10000, 325, 350, 500, 950 };
int firstDir[] = { 0, 0, 27, 4, 18, 8, 13, 4 };
int steps[] = { -16, -15, -17, 0, 1, -1, 16, -16, 15, -15, 17, -17, 0, 1, -1, 16, -16, 0, 18, 31, 33, 14, -18, -31, -33, -14, 0, 16, 15, 17, 0 };
Board PST = {
0, 2, 4, 6, 6, 4, 2, 0, 0,0,0,0,0,0,0,0,
2, 8,10,12,12,10, 8, 2, 0,0,0,0,0,0,0,0,
6,12,16,18,18,16,12, 6, 0,0,0,0,0,0,0,0,
8,14,18,20,20,18,14, 8, 0,0,0,0,0,0,0,0,
8,14,18,20,20,18,14, 8, 0,0,0,0,0,0,0,0,
6,12,16,18,18,16,12, 6, 0,0,0,0,0,0,0,0,
2, 8,10,12,12,10, 8, 2, 0,0,0,0,0,0,0,0,
0, 2, 4, 6, 6, 4, 2, 0, 0,0,0,0,0,0,0,0
};
// "abcdefghijklmnopqrstuvwxyz"
char pieces[] = ".5........3..4.176........";
int pVal[] = { 0, 1, 1, 10, 3, 3, 5, 9 };
Board board, checkRay;
int Zobrist[8*128], posKey, cnt50;
int bestScore, bestFrom, bestTo, lastMover, lastChecker, randomize, post, king, seq, minors, alwaysQueen, biased, silent;
unsigned int nMoves[2], moveList[2][4096], keyHash[2][1024];
#define C1 40
#define C2 40
#define P1 250
#define P2 250
#define N1 75
#define N2 75
#define M1 60
#define M2 60
#define K1 50
#define K2 50
#define Q1 30
#define Q2 30
int strategy[2][8][8] = {
{ { 0, 0, 0, 0, 0, 0, 0, 35 },
{ 1,400,400, P1, P1, P1, P1,400 },
{ 1,400,400, P1, P1, P1, P1,400 },
{ 1, K1, K1, K1, K1, K1, K1, K1 },
{ 1, N1, N1, N1,150, N1, N1, N1 },
{ 1, M1, M1, M1, M1,100, M1,100 },
{ 1, C1, C1, C1, C1, C1, 60,100 },
{ 1, 6, 6, Q1, 25, 80, 80,100 },
},
{ { 0, 0, 0, 0, 0, 0, 0, 35 },
{ 1,400,400, P2, P2, P2, P2,400 },
{ 1,400,400, P2, P2, P2, P2,400 },
{ 1, K2, K2, K2, K2, K2, K2, K2 },
{ 1, N2, N2, N2,150, N2, N2, N2 },
{ 1, M2, M2, M2, M2,100, M2,100 },
{ 1, C2, C2, C2, C2, C2, 60,100 },
{ 1, 6, 6, Q2, 25, 80, 80,100 },
},
};
int
MoveGen (int stm, int lastTo)
{
int move, from, to, piece, victim, type, dir, step, stop, vert, side = stm >> 4, n = 0;
king = -1; seq++;
for(from=0; from<128; from = from + 9 & ~8) {
piece = board[from];
if(piece) minors += 2 - ((piece & 6) == 4);
if(piece & stm) {
type = piece & 7;
dir = firstDir[type];
while((step = steps[dir++])) {
to = from;
do {
to += step;
if(to & 0x88) break;
stop = victim = board[to];
if((victim ^ piece) < WHITE) break; // captures friend
if(type < 3) { // Pawn
int vert = !(to - from & 7);
if(vert != !victim) break; // wrong mode
move = 256*from + to;
if(vert && (type == 1 ? to > 79 : to < 48)) stop--; // precompensate leaper on 3rd rank
if(type == 1 ? to < 16 : to > 111) { // promotion
move += (6 - side) << 16; // to Queen
move += strategy[side][0][7]<<20;
if(!alwaysQueen, 0)
moveList[side][n++] = move - (1<<16), // to Rook
moveList[side][n++] = move - (2<<16), // to Bishop
moveList[side][n++] = move - (3<<16); // to Knight
}
} else move = 256*from + to;
move += strategy[side][type][victim&7]<<20;
if((victim & 7) == 3) { // king capture
king = to;
if(lastTo != to)
do {
checkRay[to -= step] = seq; // mark check ray and attacker
} while(to != from);
return 1;
}
moveList[side][n++] = move;
stop += type < 5;
} while(!stop);
}
}
}
nMoves[side] = n;
return 0;
}
int draw50, rep3, stalemate, insuf, checkmate[3];
void
GameEnd (int result, char *msg)
{
if(result) checkmate[result+1]++; else
if(*msg == '3') rep3++; else
if(*msg == '5') draw50++; else
if(*msg == 'i') insuf++; else
if(*msg == 's') stalemate++;
if(silent) return;
printf("%s {%s}\n", result ? (result == 1 ? "1-0" : "0-1") : "1/2-1/2", msg);
fflush(stdout);
}
int
Pick (int side)
{
int n = nMoves[side];
if(!biased) return MyRandom(n);
int i, w;
for(i=w=0; i<n; i++) w += moveList[side][i] >> 20;
int x = MyRandom(w);
for(i=w=0; i<n; i++) {
w += moveList[side][i] >> 20;
if(w > x) return i;
}
return 0; // dead code
}
int
DrawCheck(int stm, int from, int to, int piece, int victim)
{
int side = stm >> 4;
posKey += Zobrist[128*(piece&7) + to + stm - WHITE]
- Zobrist[128*(piece&7) + from + stm - WHITE]
- Zobrist[128*(victim&7) + to - stm + BLACK];
int index = posKey & 1023;
int key = keyHash[side][index];
if((posKey ^ key) & ~1023) keyHash[side][index] = posKey & ~1023; // no match; save position key
else { // posKey was already hashed: repetition
if(keyHash[side][index]++ & 1) { GameEnd(0, "3-fold repetition"); return 1; }
}
if(cnt50 >= 100) { GameEnd(0, "50-move rule"); return 1; }
cnt50++; if(victim || (piece & 7) < 3) cnt50 = 0;
if(minors < 6) { GameEnd(0, "insufficient material"); return 1; }
return 0;
}
int
Think (int stm)
{
int from, to, piece, promo, pinSeq, pinned = -1, side = stm >> 4;
while(nMoves[side]) {
int n = Pick(side);
int move = moveList[side][n];
to = move & 0xFF; from = move >> 8 & 0xFF, promo = move >> 16 & 0xF; // decode
if(from == pinned && checkRay[to] != pinSeq) { // this moves a piece known to be pinned from the pin ray
moveList[side][n] = moveList[side][--nMoves[side]]; // delete the illegal move
continue; // and try again
}
int piece = board[from];
int victim = board[to]; board[to] = piece + promo; board[from] = 0; // make move
minors = 0; // set up to detect mating potential
if(!MoveGen(stm ^ COLOR, to)) {
static char *name[] = { "", "", "k", "n", "b", "r", "q" };
if(!silent) printf("move %c%d%c%d%s\n", (from&7)+'a', 8-(from>>4), (to&7)+'a', 8-(to>>4), name[promo+side]);
if(DrawCheck(stm, from, to, piece, victim)) return 1;
return 0;
}
board[from] = piece; board[to] = victim; // unmake move, as it was illegal
if((piece & 7) == 3) { // King stumbled into check
moveList[side][n] = moveList[side][--nMoves[side]]; // delete the illegal move and try again
} else if(checkRay[from] == seq) { // we moved a pinned piece
pinned = from; pinSeq = seq; // remember the pinned piece
moveList[side][n] = moveList[side][--nMoves[side]]; // delete the illegal move and try again
} else { // we must have been in check all along
int i, j, n = nMoves[side];
for(i=j=0; i<n; i++) { // examine all moves, to delete those that cannot solve this check
move = moveList[side][i];
if((move >> 8 & 0xFF) == king // King move
|| checkRay[move & 0xFF] == seq) // interposition or capture of checker
moveList[side][j++] = move; // keep it
}
nMoves[side] = j; // try again with the cleaned-up move list
}
}
// none of the moves is legal!
if(MoveGen(stm ^ COLOR, -1)) { // we are in check
GameEnd(stm == WHITE ? -1 : 1, "checkmate");
} else GameEnd(0, "stalemate");
return 1; // flag game end
}
int
Setup (char *fen)
{
char c;
int i;
for(i=0; i<128; i++) board[i] = 0;
i = 0;
while((c = *fen++)) {
if(c == 'p') board[i++] = BLACK + 2; else
if(c >= '0' && c <= '9') i += c - '0'; else
if(c >= 'a' && c <= 'z') board[i++] = BLACK + pieces[c - 'a'] - '0'; else
if(c >= 'A' && c <= 'Z') board[i++] = WHITE + pieces[c - 'A'] - '0'; else
if(c == '/') i = (i | 15) + 1; else break;
}
// for(i=0; i<128; i = i + 9 & ~8) printf(i&7 ? " %2d" : "\n# %2d", board[i]); printf("\n");
c = (*fen == 'w' ? WHITE : BLACK);
MoveGen(c, -1);
return c;
}
int
InitGame (char *fen)
{
int i;
if(!fen) fen = "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1";
for(i=0; i<1024; i++) keyHash[0][i] = keyHash[1][i] = 0;
posKey = -1; cnt50 = 0;
return Setup(fen);
}
char *fens[] = {
"rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1",
"rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR b KQkq - 0 1",
NULL,
"rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1",
};
void RunMatch()
{
int i, f, t = GetTickCount();
silent = 1; // suppress all CECP output
for(i=f=0; i<1000000; i++) {
int stm;
if(!fens[f]) f = 0;
stm = InitGame(fens[f++]);
MoveGen(stm, -1);
while(!Think(stm)) { // play a game
stm ^= COLOR;
}
if(i%1000 == 999) printf("%7d: %8.2f sec, %5d %5d %5d %5d %5d %6d %8d\n", i+1, (GetTickCount() - t)/1000.,
checkmate[2], checkmate[0], stalemate, rep3, draw50, insuf, seq), fflush(stdout);
}
exit(0);
}
int
main ()
{
int i, stm = WHITE, engineSide = 0;
char line[256], command[20];
MTinit(GetTickCount()); for(i=0; i<50; i++) MyRandom(1);
for(i=128; i<128*8; i++) Zobrist[i] = MyRandom(-1);
while(1) {
int i, c;
if(stm == engineSide) {
if(Think(stm)) engineSide = 0;
stm ^= COLOR;
}
fflush(stdout); i = 0;
while((line[i++] = c = getchar()) != '\n') if(c == EOF) printf("# EOF\n"), exit(1); line[i] = '\0';
if(*line == '\n') continue;
sscanf(line, "%s", command);
printf("# command: %s\n", command);
if(!strcmp(command, "usermove")) {
int from, to; char c, d, promo, ep;
sscanf(line, "usermove %c%d%c%d%c", &c, &from, &d, &to, &promo);
from = (8 - from)*16 + c - 'a'; to = (8 - to)*16 + d - 'a';
int piece = board[from], victim = board[to];
if((piece & 7) == 3 && to - from == 2) board[from + 1] = board[to + 1], board[to + 1] = 0; // K-side castling
if((piece & 7) == 3 && from - to == 2) board[from - 1] = board[to - 2], board[to - 2] = 0; // Q-side castling
ep = ((piece & 7) < 3 && !victim); // recognize e.p. capture
board[to] = piece; if(ep) board[from & 0x70 | to & 7] = 0, victim = piece ^COLOR; board[from] = 0;
if(promo >= 'a') {
board[to] = board[to] | 7; // promote to Q
if(promo == 'n') board[to] -= 3; // correct for under-promotion
if(promo == 'b') board[to] -= 2;
if(promo == 'r') board[to] -= 1;
}
stm ^= COLOR;
MoveGen(stm, to);
if(DrawCheck(stm ^ COLOR, from, to, piece, victim)) engineSide = 0;
}
else if(!strcmp(command, "match")) RunMatch(); // not used as XBoard engine!
else if(!strcmp(command, "protover")) printf("feature option=\"always queen -check 0\n"),
printf("feature option=\"biased to capture -check 0\n"),
printf("feature myname=\"Ram 2.0\" setboard=1 usermove=1 analyze=0 colors=0 sigint=0 sigterm=0 done=1\n");
else if(!strcmp(command, "option")) sscanf(line+7, "always queen=%d\n", &alwaysQueen),
sscanf(line+7, "biased to capture=%d\n", &biased);
else if(!strcmp(command, "new")) stm = InitGame(NULL), randomize = 0, engineSide = BLACK;
else if(!strcmp(command, "go")) engineSide = stm;
else if(!strcmp(command, "result")) engineSide = 0;
else if(!strcmp(command, "force")) engineSide = 0;
else if(!strcmp(command, "setboard")) stm = Setup(line+9);
else if(!strcmp(command, "random")) randomize = !randomize;
else if(!strcmp(command, "post")) post = 1;
else if(!strcmp(command, "nopost")) post = 0;
else if(!strcmp(command, "quit")) break;
}
return 0;
}
-
- Posts: 3226
- Joined: Wed May 06, 2009 10:31 pm
- Location: Fuquay-Varina, North Carolina
Re: N.E.G. 1.0 released
Hi H.G.
The executable found on the download page is misnamed NEG1_2 though a text editor shows that it refers to itself as 1.3. Also, the web site still uses the name "N.E.G. 1.2".