Author: Ron Murawski
Date: 12:36:09 07/14/02
Go up one level in this thread
On July 14, 2002 at 15:11:00, Mike Byrne wrote: >[D] 6k1/pq3pP1/8/3P4/r3n3/5Q2/1p2N2P/1R5K b - - 0 38 ><snip> >>>>Ron >>> >>>Chessmaster 9000 says Qxd5 is the winning move, although it DOES pick Nd2 >>>between 9 and 18 seconds. >>> >>>Time Depth Score Positions Moves >>>0:00 1/3 -1.43 6303 38...Rb4 39.Qh5 Kxg7 40.Rg1+ Kf8 >>> 41.Qh8+ Ke7 >>>0:00 1/4 -1.43 9541 38...Rb4 39.Qh5 Kxg7 40.Rg1+ Kf8 >>> 41.Qh8+ Ke7 >>>0:00 1/5 -1.13 34963 38...Rb4 39.Qh5 Kxg7 40.Nd4 Qb6 >>> 41.Rg1+ Kf8 42.Qh8+ Ke7 >>>0:02 1/6 -1.41 123632 38...Rb4 39.Qh5 Kxg7 40.Nd4 Qc7 >>> 41.Nc6 Nf2+ 42.Kg2 >>>0:04 1/7 -0.95 298883 38...Rb4 39.Qh5 Kxg7 40.Nd4 Qb6 >>> 41.Qe5+ Qf6 42.Qxe4 Qxd4 43.Qxd4+ >>> Rxd4 44.Rxb2 Rxd5 >>>0:06 1/7 -1.27 459123 38...f6 39.Qf5 Rb4 40.Rg1 Nf2+ >>> 41.Kg2 Ng4 42.Qe6+ Kxg7 43.Nc3 >>>0:09 1/7 -1.78 670828 38...Nd2 39.Qh5 Rh4 40.Rxb2 Qxb2 >>> 41.Qxh4 Qa1+ 42.Ng1 Qxg1+ 43.Kxg1 >>> Nf3+ 44.Kf2 Nxh4 >>>0:13 1/8 -3.17 1017561 38...Nd2 39.Qh5 Rh4 40.Rxb2 Qxb2 >>> 41.Qxh4 Qa1+ 42.Ng1 Qxg1+ 43.Kxg1 >>> Nf3+ 44.Kf2 Nxh4 45.d6 Kxg7 46.d7 >>>0:18 1/8 -3.74 1383153 38...Qxd5 39.Rxb2 Ng3+ 40.Kg2 Nxe2 >>> 41.Qxd5 Nf4+ 42.Kf3 Nxd5 43.Rg2 >>> Rf4+ 44.Ke2 >>>0:24 1/9 -3.81 1876955 38...Qxd5 39.Rxb2 Ng3+ 40.Kg2 Nxe2 >>> 41.Qxd5 Nf4+ 42.Kf3 Nxd5 43.Rg2 >>> Rf4+ 44.Ke2 a5 >>>0:38 2/10 -3.70 3007760 38...Qxd5 39.Rxb2 Ng3+ 40.Kg2 Nxe2 >>> 41.Qxd5 Nf4+ 42.Kf3 Nxd5 43.Rg2 >>> f5 44.Rg6 Ra3+ 45.Kf2 >>> >>>Forcing Nd2 shows a draw score. >>> >>>jm >> >>When the new ChessMaster is released I will be buying it. I love the quick finds >>of great moves. Your analysis shows me that you are doing something right in >>ChessMaster (and that Uri is doing something right in Movei) that Horizon and >>Crafty are doing wrong. Maybe Gerd has a handle on this with his mention of >>disabling double null-move when king safety is involved. >> >>Ron > > >My latest Crafty beta is picking up Qxd5 in 68 seconds - thanks in part to >Gerd's seggestion above. > >White(1): 6k1/pq3pP1/8/3P4/r3n3/5Q2/1p2N2P/1R5K b - - 0 38 > > +---+---+---+---+---+---+---+---+ > 8 | | | | | | | *K| | > +---+---+---+---+---+---+---+---+ > 7 | *P| *Q| | | | *P| P | | > +---+---+---+---+---+---+---+---+ > 6 | | | | | | | | | > +---+---+---+---+---+---+---+---+ > 5 | | | | P | | | | | > +---+---+---+---+---+---+---+---+ > 4 | *R| | | | *N| | | | > +---+---+---+---+---+---+---+---+ > 3 | | | | | | Q | | | > +---+---+---+---+---+---+---+---+ > 2 | | *P| | | N | | | P | > +---+---+---+---+---+---+---+---+ > 1 | | R | | | | | | K | > +---+---+---+---+---+---+---+---+ > a b c d e f g h > >Black(1): go > clearing hash tables > time surplus 0.00 time limit 10:00 (10:00) > nss depth time score variation (1) >starting thread 1 > (2) 5-> 0.46 1.34 1. ... f6 2. Nf4 f5 3. Nh5 Nd2 4. Qd1 > <HT> > 6 0.63 1.54 1. ... f6 2. Nf4 Qxg7 3. d6 Rc4 4. > Qe3 f5 <HT> > (2) 6-> 1.10 1.54 1. ... f6 2. Nf4 Qxg7 3. d6 Rc4 4. > Qe3 f5 <HT> > 7 1.74 1.62 1. ... f6 2. Nf4 Qxg7 3. Qe2 Qg5 4. > Nd3 Ra1 5. Qxb2 <HT> > 7 2.89 ++ 1. ... Ng5!! > (4) 7-> 3.07 2.01 1. ... Ng5 > (3) 8 3.55 2.02 1. ... Ng5 2. Qf5 Ra1 3. Nf4 Rxb1+ > 4. Qxb1 Kxg7 5. h4 Ne4 6. Nd3 Ng3+ > 7. Kg2 <HT> > 8 5.39 2.17 1. ... Nd2 2. Qh5 Rh4 3. Rxb2 Qxb2 > 4. Qxh4 Qa1+ 5. Ng1 Qxg1+ 6. Kxg1 Nf3+ > 7. Kf2 Nxh4 <HT> > (4) 8-> 6.82 2.17 1. ... Nd2 2. Qh5 Rh4 3. Rxb2 Qxb2 > 4. Qxh4 Qa1+ 5. Ng1 Qxg1+ 6. Kxg1 Nf3+ > 7. Kf2 Nxh4 <HT> > 9 7.60 ++ 1. ... Nd2!! > 9 12.44 2.65 1. ... Qxd5 2. Rxb2 Ng3+ 3. Kg2 Nxe2 > 4. Qxd5 Nf4+ 5. Kf3 Nxd5 6. Rg2 Rf4+ > 7. Ke2 Rd4 <HT> > 9-> 12.44 2.65 1. ... Qxd5 2. Rxb2 Ng3+ 3. Kg2 Nxe2 > 4. Qxd5 Nf4+ 5. Kf3 Nxd5 6. Rg2 Rf4+ > 7. Ke2 Rd4 <HT> > 10 16.35 2.89 1. ... Qxd5 2. Rxb2 Ng3+ 3. Kg2 Nxe2 > 4. Qxd5 Nf4+ 5. Kf3 Nxd5 6. Rg2 Rf4+ > 7. Ke2 Re4+ 8. Kd2 f5 <HT> > 10 21.50 ++ 1. ... Nd2!! > 10 28.93 3.60 1. ... Nd2 2. Qf5 Rh4 3. Rd1 b1=Q 4. > Rxb1 Nxb1 5. Ng3 Rh7 6. Nh5 Rxh5 <HT> > (2) 10-> 30.13 3.60 1. ... Nd2 2. Qf5 Rh4 3. Rd1 b1=Q 4. > Rxb1 Nxb1 5. Ng3 Rh7 6. Nh5 Rxh5 <HT> > 11 38.57 -- 1. ... Nd2 > 11 1:07 -0.08 1. ... Nd2 2. Qh5 Rh4 3. Rxb2 Qxb2 > 4. Qxh4 Qb1+ 5. Ng1 Qe4+ 6. Qxe4 Nxe4 > 7. h4 Kxg7 8. Kg2 f5 <HT> > 11 1:08 ++ 1. ... Qxd5!! > 11 1:43 3.89 1. ... Qxd5 2. Rxb2 Ng3+ 3. Kg2 Nxe2 > 4. Qxd5 Nf4+ 5. Kf3 Nxd5 6. Rg2 Ra3+ > 7. Ke4 Nf6+ 8. Ke5 Nh5 <HT> > (2) 11-> 1:51 3.89 1. ... Qxd5 2. Rxb2 Ng3+ 3. Kg2 Nxe2 > 4. Qxd5 Nf4+ 5. Kf3 Nxd5 6. Rg2 Ra3+ > 7. Ke4 Nf6+ 8. Ke5 Nh5 <HT> Thanks, Mike. I'll be happy if I can achieve the same kind of improvement for Horizon. But I would be hapier still if I could reject Nd2 within 18 seconds like Chessmaster can. I keep thinking there is something more to this position that just escapes me. Maybe I've looked at it too long and I've become obsessed... Ron
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