Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: How long before your program sees that Nd5+ is not really the best?

Author: Rex

Date: 11:20:44 04/23/04

Go up one level in this thread


On April 23, 2004 at 04:27:28, Dann Corbit wrote:

>[D]r1bq1r2/ppppkpQp/2n2N2/2b5/4P3/1P3N2/PBP3PP/R3KB1n w Q - bm Nxh7;
>
>PFGA: EPD record: 1
>              clearing hash tables
>              time surplus   0.00  time limit 50:00 (50:00)
>              depth   time  score   variation (1)
>                6->   0.34   0.01   1. Nd5+ Ke8 2. Nf6+ Ke7 3. Nd5+
>                7     0.46   0.01   1. Nd5+ Ke8 2. Nf6+ Ke7 3. Nd5+
>                7->   2.32   0.01   1. Nd5+ Ke8 2. Nf6+ Ke7 3. Nd5+
>                8     2.52   0.01   1. Nd5+ Ke8 2. Nf6+ Ke7 3. Nd5+
>                8->   4.77   0.01   1. Nd5+ Ke8 2. Nf6+ Ke7 3. Nd5+
>                9     5.22     +1   1. Nd5+!!
>                9     6.25   1.08   1. Nd5+ Ke8 2. Bf6 Ne7 3. Bxe7 Bxe7
>                                    4. Qe5 Rg8 5. Nxc7+ Kf8 6. Nxa8 Qe8
>                9->  28.93   1.08   1. Nd5+ Ke8 2. Bf6 Ne7 3. Bxe7 Bxe7
>                                    4. Qe5 Rg8 5. Nxc7+ Kf8 6. Nxa8 Qe8
>               10    30.61   0.87   1. Nd5+ Ke8 2. Bf6 Ne7 3. Bxe7 Bxe7
>                                    4. Qe5 Rg8 5. Nxc7+ Kf8 6. Nxa8 Bf6
>                                    7. Qd6+ Qe7
>               10->  54.69   0.87   1. Nd5+ Ke8 2. Bf6 Ne7 3. Bxe7 Bxe7
>                                    4. Qe5 Rg8 5. Nxc7+ Kf8 6. Nxa8 Bf6
>                                    7. Qd6+ Qe7
>               11     1:05   0.83   1. Nd5+ Ke8 2. Bf6 Ne7 3. Bxe7 Bxe7
>                                    4. Qe5 f6 5. Nxc7+ Kf7 6. Qh5+ Kg7
>                                    7. Qg4+ Kh8 8. Nxa8 Qe8
>               11->   3:52   0.83   1. Nd5+ Ke8 2. Bf6 Ne7 3. Bxe7 Bxe7
>                                    4. Qe5 f6 5. Nxc7+ Kf7 6. Qh5+ Kg7
>                                    7. Qg4+ Kh8 8. Nxa8 Qe8
>               12     4:13   0.86   1. Nd5+ Ke8 2. Bf6 Ne7 3. Bxe7 Bxe7
>                                    4. Qe5 f6 5. Nxc7+ Kf7 6. Qd5+ Kg7
>                                    7. Nxa8 Bb4+ 8. Nd2 Bc3 9. O-O-O
>               12    10:47     +1   1. Nxh7!!
>               12    14:52   1.54   1. Nxh7 Bb4+ 2. Nd2 Ke8 3. Nf6+ Ke7
>                                    4. Nd5+ Ke8 5. Bf6 Ne7 6. Nxb4 a5 7.
>                                    Nd5 Rg8 8. Qxg8+ Nxg8 9. Bxd8 Kxd8
>               12->  29:28   1.54   1. Nxh7 Bb4+ 2. Nd2 Ke8 3. Nf6+ Ke7
>                                    4. Nd5+ Ke8 5. Bf6 Ne7 6. Nxb4 a5 7.
>                                    Nd5 Rg8 8. Qxg8+ Nxg8 9. Bxd8 Kxd8
>               13    32:53     +1   1. Nxh7!!
>               13    44:35   2.51   1. Nxh7 Bb4+ 2. Nd2 Ke8 3. Nf6+ Ke7
>                                    4. Nd5+ Ke8 5. Bf6 Ne7 6. Bxe7 Bxe7
>                                    7. Qe5 Rg8 8. Nxc7+ Kf8 9. Nxa8 Qe8
>              time=50:00  cpu=94%  mat=-5  n=1466497086  fh=93%  nps=488K
>              ext-> chk=90015145 cap=3657675 pp=260660 1rep=6348340 mate=193904
>              predicted=0  nodes=1466497086  evals=267693847  50move=0
>              endgame tablebase-> probes=0  hits=0


New game, Blitz:3' MyTown
r1bq1r2/ppppkpQp/2n2N2/2b5/4P3/1P3N2/PBP3PP/R3KB1n w Q - 0 1

Analysis by Shredder 7.04: Customized Settings AMD MP 2600

Fines in only 4 Seconds



1.0-0-0 Nf2 2.Rd5
  ³  (-0.63)   Depth: 1/1   00:00:00
1.0-0-0 Nf2 2.Qxf7+ Kxf7
  ³  (-0.63)   Depth: 1/3   00:00:00
1.0-0-0 Nf2 2.Qxf7+ Kxf7
  µ  (-0.88)   Depth: 2/4   00:00:00
1.0-0-0 Nf2 2.Qxf7+ Kxf7
  µ  (-1.31)   Depth: 2/4   00:00:00
1.Nd5+ Ke8 2.Nf6+ Ke7 3.0-0-0 Nf2 4.Qxf7+ Kxf7
  =  (0.02)   Depth: 2/4   00:00:00
1.Nd5+ Ke8 2.Nf6+ Ke7 3.0-0-0 Nf2 4.Qxf7+ Kxf7
  =  (0.02)   Depth: 2/8   00:00:00
1.Nd5+ Ke8 2.Nf6+ Ke7 3.Nd5+ Ke8 4.Nf6+ Ke7 5.Nd5+
  =  (0.02)   Depth: 3/3   00:00:00
1.Nd5+ Ke8 2.Nf6+ Ke7 3.Nd5+ Ke8 4.Nf6+ Ke7 5.Nd5+
  =  (0.02)   Depth: 4/4   00:00:00
1.Nd5+ Ke8 2.Nf6+ Ke7 3.Nd5+ Ke8 4.Nf6+ Ke7 5.Nd5+
  =  (0.02)   Depth: 5/5   00:00:00
1.Nd5+ Ke8 2.Nf6+ Ke7 3.Nd5+ Ke8 4.Nf6+ Ke7 5.Nd5+
  =  (0.02)   Depth: 6/20   00:00:00
1.0-0-0 Be3+ 2.Kb1 Na5 3.Nxh7 d6 4.Nxf8 Qxf8
  =  (0.03)   Depth: 6/23   00:00:00
1.0-0-0 Nf2 2.Nd5+ Ke8 3.Nxc7+ Qxc7 4.Rxd7 Bxd7 5.Qxf8+ Kxf8
  =  (0.03)   Depth: 6/23   00:00:00
1.0-0-0 Nf2 2.Nd5+ Ke8 3.Nf6+ Ke7 4.Nd5+ Ke8 5.Nf6+ Ke7 6.Nd5+
  =  (0.03)   Depth: 7/20   00:00:00  181kN
1.Nd5+ Ke8 2.Bf6 Ne7 3.Bxe7 Nf2 4.Bxd8 Bb4+ 5.Nxb4 Nd3+ 6.Bxd3
  =  (0.04)   Depth: 7/22   00:00:00  208kN
1.Nd5+ Ke8 2.Bf6 Ne7 3.Bxe7 Bxe7 4.Qe5 Rg8 5.Nxc7+ Kf8 6.Nxa8 d6
  ²  (0.38)   Depth: 7/22   00:00:00  268kN
1.Nd5+ Ke8 2.Bf6 Ne7 3.Bxe7 Bxe7 4.Qe5 Rg8 5.Nxc7+ Kf8 6.Nxa8 d6 7.Qh5
  ²  (0.27)   Depth: 8/26   00:00:01  646kN
1.Nd5+ Ke8 2.Bf6 Ne7 3.Bxe7 Bxe7 4.Qe5 Rg8 5.Nf6+ Kf8 6.Nxh7+ Ke8 7.Nf6+ Kf8
8.Nh7+ Ke8 9.Nf6+ Kf8 10.Nh7+ Ke8
  =  (0.07)   Depth: 9/27   00:00:02  1456kN
1.Nxh7 Ke8 2.Bf6 Be7 3.Nfg5 b6 4.Nxf8 Bd6 5.Bxd8
  =  (0.08)   Depth: 9/30   00:00:04  2916kN
1.Nxh7 Ke8 2.Bf6 Be7 3.Nfg5 b6 4.Nxf8 Ne5 5.Nfh7
  ²  (0.43)   Depth: 9/30   00:00:04  3033kN
1.Nxh7 Bb4+ 2.Ke2 Ke8 3.Bf6 Be7 4.Nfg5 d6 5.Nxf8 Ne5 6.Bxe5 Bg4+ 7.Kd3 dxe5+
8.Nd7
  ±  (1.25)   Depth: 9/30   00:00:05  3719kN
1.Nxh7 Bb4+ 2.Ke2 Ke8 3.Bf6 Be7 4.Nfg5 d5 5.Nxf8 Bg4+ 6.Kd2 dxe4+ 7.Bd3 Bb4+
8.Kc1 Bd2+ 9.Kxd2 e3+ 10.Kxe3 Qe7+ 11.Bxe7
  +-  (1.48)   Depth: 10/29   00:00:08  5481kN
1.Nxh7 Bb4+ 2.Ke2 Ke8 3.Bf6 Be7 4.Nfg5 d5 5.Nxf8 Bg4+ 6.Ke1 Bh5 7.Bxe7 Qxe7
8.Be2 Nb4 9.Bxh5
  ±  (1.26)   Depth: 11/34   00:00:13  9448kN






This page took 0 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.