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Subject: Re: Good Test Move for fast computors

Author: Jeremiah Penery

Date: 17:37:03 06/17/02

Go up one level in this thread


On June 17, 2002 at 11:18:30, Art Basham wrote:

>Here black (Botvinnik in 1940) played
>...Rxh3+, then ...d4, etc.
>
>[D]5bk1/1p4p1/pP3p2/Pq1pn3/8/1r5P/RN1Br1P1/2QR3K b - -
>
>My computor is way too slow to find this one!
>...Rxg2...? is not the correct move here...!

Modified Crafty 18.15 (with Singular Extensions), AthlonXP 1600MHz:

White(1): 5bk1/1p4p1/pP3p2/Pq1pn3/8/1r5P/RN1Br1P1/2QR3K b - -
Black(1): analyze
Analyze Mode: type "exit" to terminate.
              clearing hash tables
              time surplus   0.00  time limit 30.00 (3:30)
         nss  depth   time  score   variation (1)
                ...
                4     0.03  -2.93   1. ... Rg3 2. Rg1 Qe8 3. Ra4
                4->   0.05  -2.93   1. ... Rg3 2. Rg1 Qe8 3. Ra4
                5     0.09     ++   1. ... Rg3!!
                5     0.14  -4.25   1. ... Rg3 2. Bf4 Rgxg2 3. Rg1 Nd3
                5->   0.17  -4.25   1. ... Rg3 2. Bf4 Rgxg2 3. Rg1 Nd3
                6     0.27  -4.42   1. ... Rg3 2. Bf4 Rgxg2 3. Bxe5 fxe5
                                    4. Rg1
                6     0.38     ++   1. ... Rxh3+!!
                6     0.50 -Mat06   1. ... Rxh3+ 2. gxh3 d4 3. Qc5 Qxc5
                                    4. Ra3 Qc6+ 5. Rf3 Qxf3+ 6. Kg1 Qg2#
                6->   0.52 -Mat06   1. ... Rxh3+ 2. gxh3 d4 3. Qc5 Qxc5
                ...
               11->  24.32 -Mat06   1. ... Rxh3+ 2. gxh3 d4 3. Qc5 Qxc5
                                    4. Ra3 Qc6+ 5. Rf3 Qxf3+ 6. Kg1 Qg2#
                                    <HT>

  Elapsed Time: 24.41, CPU Time: 23.37, CPU Use: 95%
  Material Balance: -100, Previous Moves Predicted: 0
  Nodes: 23729302, Evaluations: 48925, FH%: 99%, NPS: 972k
  EXTENSIONS->
      Singular: 43, Threat: 3007, Passed Pawn: 4802
      One-Reply: 299937, Check: 2534820
  TABLEBASES-> Probes: 0, Successful: 0
  HASH TABLES-> Hash Hits: 31% (2182000/6850526)
                Pawn Hash Hits: 99% (15841944/15846365)
                Hash Table Filled: 88%



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