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Subject: Re: Highly thematic move and spectular sacrifice test positions

Author: Tord Romstad

Date: 10:59:11 09/05/03

Go up one level in this thread


On September 05, 2003 at 13:36:17, Dana Turnmire wrote:

>
>From  The Mammouth Book of Chess -  "16... g5!!  Highly thematic - Black attacks
>the white centre with all the devices at his disposal."
>
>Chessmaster 9000 finds this move in 5 seconds.
>Genius 7 and Arasan 7.1 cannot find it after 3 minutes.
>
>[Event "New York 1981"]
>[Site "?"]
>[Date "2003.09.05"]
>[Round "?"]
>[White "Fedorowicz"]
>[Black "Shamkovich"]
>[Result "*"]
>[d] 3rk2r/p2n1pbp/4p1p1/q1pPP3/1pP2P2/4B2B/P2Q1P1P/2R1K2R b kK -

Gothmog 0.3.0 (Athlon 2.0 GHz) chooses the right move in just 0.08 seconds, but
the
score is not very convincing:

 1       -0.97     0.00        242 d7b6
 2       -1.03     0.03        570 d7e5 f4e5 g7e5
 3       -0.72     0.08       4693 g6g5 c1d1 d7b6
 4       -0.67     0.12      10194 g6g5 f4g5 d7e5 h3g2
 5       -0.62     0.30      28874 g6g5 c1d1 d7b6 d5d6 b6c4
 6    <= -0.64     0.46      45998 g6g5 f4g5 d7e5 h3g2 d8d6 g2e4
 6    <= -0.66     0.46      46514 g6g5 f4g5 d7e5 h3g2 d8d6 g2e4
 6    >= -0.67     0.64      67669 g6g5 f4g5 d7e5 h3g2 a5a3 e1g1
 6    >= -0.66     0.64      68956 g6g5 f4g5 d7e5 h3g2 a5a3 e1g1
 6       -0.66     0.64      68956 g6g5 f4g5 d7e5 h3g2 a5a3 e1g1
 7    >= -0.66     1.65     210611 g6g5 f4g5 d7e5 h3g2 a5a3 e1g1 a3d3
 7    >= -0.64     1.70     223277 g6g5 f4g5 d7e5 h3g2 a5a3 e1g1 a3d3
 7    >= -0.58     1.82     251024 g6g5 f4g5 d7e5 h3g2 a5a3 e1g1 e5d3
 7    >= -0.44     2.04     296185 g6g5 f4g5 d7e5 h3g2 e6d5 c4d5 a5a3
 7    >= -0.19     2.59     392537 g6g5 f4g5 d7e5 h3g2 e6d5 c4d5 c5c4
 7    <=  0.19     2.66     402782 g6g5 f4g5 d7e5 h3g2 e6d5 c4d5 c5c4
 7    <=  0.17     2.66     403302 g6g5 f4g5 d7e5 h3g2 e6d5 c4d5 c5c4
 7    <=  0.14     2.66     404176 g6g5 f4g5 d7e5 h3g2 e6d5 c4d5 c5c4
 7    <=  0.06     2.67     406558 g6g5 f4g5 d7e5 h3g2 e6d5 c4d5 c5c4
 7    >= -0.08     2.89     453570 g6g5 f4g5 d7e5 h3g2 e6d5 c4d5 c5c4
 7    >= -0.06     2.97     473776 g6g5 f4g5 d7e5 h3g2 e6d5 c4d5 c5c4
 7    <= -0.02     2.98     475282 g6g5 f4g5 d7e5 h3g2 e6d5 c4d5 c5c4
 7    <= -0.03     2.98     476225 g6g5 f4g5 d7e5 h3g2 e6d5 c4d5 c5c4
 7    <= -0.06     3.01     478045 g6g5 f4g5 d7e5 h3g2 e6d5 c4d5 c5c4
 7       -0.06     3.01     478045 g6g5 f4g5 d7e5 h3g2 e6d5 c4d5 c5c4
 8    <= -0.08     3.17     502756 g6g5 f4g5 d7e5 h3g2 e6d5 c4d5 c5c4 e1g1
 8    <= -0.09     3.18     504823 g6g5 f4g5 d7e5 h3g2 e6d5 c4d5 c5c4 e1g1
 8    <= -0.12     3.19     507686 g6g5 f4g5 d7e5 h3g2 e6d5 c4d5 c5c4 e1g1
 8    <= -0.20     3.23     514316 g6g5 f4g5 d7e5 h3g2 e6d5 c4d5 c5c4 e1g1
 8    >= -0.34     5.14     803452 g6g5 f4g5 d7e5 h3g2 e6d5 c4d5 c5c4 e1g1
 8    >= -0.33     5.25     831800 g6g5 f4g5 d7e5 h3g2 e6d5 c4d5 c5c4 e1g1
 8    <= -0.28     5.36     851282 g6g5 f4g5 d7e5 h3g2 e6d5 c4d5 c5c4 g2e4
 8    >= -0.28     5.55     896455 g6g5 f4g5 d7e5 h3g2 e6d5 c4d5 c5c4 g2e4
 8       -0.28     5.55     896455 g6g5 f4g5 d7e5 h3g2 e6d5 c4d5 c5c4 g2e4
 9    >= -0.28    11.96    1869274 g6g5 f4g5 d7e5 h3g2 e6d5 c4d5 c5c4 g2e4
                                   d8d6
 9    >= -0.27    12.31    1956867 g6g5 f4g5 d7e5 h3g2 e6d5 c4d5 c5c4 g2e4
                                   d8d6
 9    >= -0.20    13.26    2152340 g6g5 f4g5 d7e5 h3g2 e6d5 c4d5 c5c4 g2e4
                                   d8d6
 9    >= -0.06    15.24    2517647 g6g5 f4g5 d7e5 h3g2 e6d5 c4d5 c5c4 g2e4
                                   d8d6
 9    <=  0.17    15.81    2608420 g6g5 f4g5 d7e5 h3g2 e6d5 c4d5 c5c4 g2e4
                                   d8d6
 9    <=  0.16    15.83    2614684 g6g5 f4g5 d7e5 h3g2 e6d5 c4d5 c5c4 g2e4
                                   d8d6
 9    <=  0.12    15.87    2625396 g6g5 f4g5 d7e5 h3g2 e6d5 c4d5 c5c4 g2e4
                                   d8d6
 9    <=  0.05    15.93    2642164 g6g5 f4g5 d7e5 h3g2 e6d5 c4d5 c5c4 g2e4
                                   d8d6
 9    >= -0.05    16.36    2749800 g6g5 f4g5 d7e5 h3g2 e6d5 c4d5 c5c4 g2e4
                                   a5a3
 9    >= -0.03    16.92    2873524 g6g5 f4g5 d7e5 h3g2 e6d5 c4d5 c5c4 g2e4
                                   a5a3
 9    <=  0.02    16.95    2884563 g6g5 f4g5 d7e5 h3g2 e6d5 c4d5 c5c4 g2e4
                                   a5a3
 9    <=  0.00    16.98    2892838 g6g5 f4g5 d7e5 h3g2 e6d5 c4d5 c5c4 g2e4
                                   a5a3
 9    >= -0.02    17.49    3011760 g6g5 f4g5 d7e5 h3g2 e6d5 c4d5 c5c4 g2e4
                                   a5a3
 9    <= -0.02    17.52    3019821 g6g5 f4g5 d7e5 h3g2 e6d5 c4d5 c5c4 g2e4
                                   a5a3
 9       -0.02    17.52    3019821 g6g5 f4g5 d7e5 h3g2 e6d5 c4d5 c5c4 g2e4
                                   a5a3

>In this second position from the same game.  "20...Rxd5!!  A spectacular
>sacrifice to open a line for the queen toward the white king."
>
>Chessmaster 9000 finds it in 9 seconds.
>Genius 7 finds it in 55 seconds.
>Phoenix Genius finds it in 22 seconds.
>Arasan 7.1 finds it in 18 seconds.
>
>[d] 3rk2r/p4pRp/4p3/q1pPn3/1pP5/4p2B/PQ2KP1P/2R5 b k -

Here Gothmog needs 10 seconds:

 1        3.22     0.01       1189 b4b3 h3e6
 2        2.19     0.05       5258 a5c7 h3e6 e3f2
 3        2.19     0.09       8958 a5c7 h3e6 e3f2
 4        3.19     0.38      42019 a5a6 f2e3 d8d5 e2f1 e5c4
 5        3.19     0.74      89528 a5a6 f2e3 d8d5 e2f1 e5c4
 6    <=  3.17     1.46     195552 a5a6 b2e5 a6a2 e2e3 a2b3 e3d2 b3h3 e5c7
 6    <=  3.16     1.50     203128 a5a6 b2e5 a6a2 e2e3 a2b3 e3d2 b3h3 e5c7
 6    <=  3.12     1.54     211964 a5a6 b2e5 a6a2 e2e3 a2b3 e3d2 b3h3 e5c7
 6    <=  3.05     1.66     235563 a5a6 b2e5 a6a2 e2e3 a2b3 e3d2 b3h3 e5c7
 6    <=  2.89     1.85     269898 a5a6 b2e5 a6a2 e2e3 a2b3 e3d2 b3h3 d2e1
 6    <=  2.62     2.19     329164 a5a6 b2e5 a6a2 e2e3 a2b3 e3d2 b3h3 d2e1
 6    <=  2.22     4.12     648474 a5a6 b2e5 a6a2 e2e3 a2b3 e3d2 b3h3 e5f6
 6    >=  1.66     4.28     676118 a5a6 b2e5 a6a2 e2e3 a2b3 e3d2 b3h3 e5f6
 6    >=  1.67     4.33     683393 a5a6 b2e5 a6a2 e2e3 a2b3 e3d2 b3h3 e5f6
 6    >=  1.73     4.35     687538 a5a6 b2e5 a6a2 e2e3 a2b3 e3d2 b3h3 e5f6
 6    >=  1.88     4.37     692839 a5a6 b2e5 a6a2 e2e3 a2b3 e3d2 b3h3 e5f6
 6    >=  2.12     4.42     703925 a5a6 b2e5 a6a2 e2e3 a2b3 e3d2 b3h3 e5f6
 6    <=  2.20     4.47     714501 a5a6 b2e5 a6a2 e2e3 a2b3 e3d2 b3h3 e5f6
 6    <=  2.19     4.51     724572 a5a6 b2e5 a6a2 e2e3 a2b3 e3d2 b3h3 e5f6
 6    <=  2.16     4.60     743530 a5a6 b2e5 a6a2 e2e3 a2b3 e3d2 b3h3 e5f6
 6    >=  2.14     4.62     746879 a5a6 b2e5 a6a2 e2e3 a2b3 e3d2 b3h3 e5f6
 6    <=  2.14     4.65     754000 a5a6 b2e5 a6a2 e2e3 a2b3 e3d2 b3h3 e5f6
 6        2.14     4.65     754000 a5a6 b2e5 a6a2 e2e3 a2b3 e3d2 b3h3 e5f6
 7    >=  2.14     5.63     912525 a5a6 b2e5 a6a2 e2e3 a2a3 e3d2 a3h3 e5f6
                                   d8d7
 7    >=  2.16     5.69     925552 a5a6 b2e5 a6a2 e2e3 a2a3 e3d2 a3h3 e5f6
                                   d8d7
 7    >=  2.22     5.80     949352 a5a6 b2e5 a6a2 e2e3 a2a3 e3d2 a3h3 e5f6
                                   d8d7
 7    >=  2.36     5.99     989688 a5a6 b2e5 a6a2 e2e3 a2a3 e3d2 a3h3 e5f6
                                   d8d7
 7    >=  2.61    10.20    1670009 d8d5 c4d5 a5a6 e2e3 a6d3 e3f4 f7f6 b2b3
                                   e5g6 g7g6 e6e5 f4g4 h7h5
 7    >=  3.00    11.43    1879605 d8d5 c4d5 a5a6 e2e3 a6d3 e3f4 f7f6 b2b3
                                   e5g6 g7g6 e6e5 f4g4 h7h5
 7    <=  3.55    13.04    2134108 d8d5 c4d5 a5a6 e2e3 a6d3 e3f4 f7f6 c1c3
                                   e5g6 g7g6 e6e5 f4g4 h7h5 g4h4 d3e4 h4g3
                                   e4g6
 7    <=  3.53    13.10    2147235 d8d5 c4d5 a5a6 e2e3 a6d3 e3f4 f7f6 c1c3
                                   e5g6 g7g6 e6e5 f4g4 h7h5 g4h4 d3e4 h4g3
                                   e4g6
 7    <=  3.50    13.18    2166971 d8d5 c4d5 a5a6 e2e3 a6d3 e3f4 f7f6 c1c3
                                   e5g6 g7g6 e6e5 f4g4 h7h5 g4h4 d3e4 h4g3
                                   e4g6
 7    <=  3.42    13.54    2233464 d8d5 c4d5 a5a6 e2e3 a6d3 e3f4 f7f6 c1c3
                                   e5g6 g7g6 e6e5 f4g4 h7h5 g4h4 d3e4 h4g3
                                   e4g6
 7    <=  3.27    13.94    2309825 d8d5 c4d5 a5a6 e2e3 a6d3 e3f4 f7f6 c1c3
                                   e5g6 g7g6 e6e5 f4g4 h7h5 g4h4 d3e4 h4g3
                                   e4g6
 7    >=  3.02    14.02    2330166 d8d5 c4d5 a5a6 e2e3 a6d3 e3f4 f7f6 c1c3
                                   e5g6 g7g6 e6e5 f4g4 h7h5 g4h4 d3e4 h4g3
                                   e4g6
 7    >=  3.03    14.14    2355427 d8d5 c4d5 a5a6 e2e3 a6d3 e3f4 f7f6 c1c3
                                   e5g6 g7g6 e6e5 f4g4 h7h5 g4h4 d3e4 h4g3
                                   e4g6
 7    >=  3.09    14.87    2483465 d8d5 c4d5 a5a6 e2e3 a6d3 e3f4 f7f6 c1c3
                                   e5g6 g7g6 e6e5 f4g4 h7h5 g4h4 d3e4 h4g3
                                   e4g6
 7    <=  3.22    15.18    2541777 d8d5 c4d5 a5a6 e2e3 a6d3 e3f4 f7f6 c1c3
                                   e5g6 g7g6 e6e5 f4g4 h7h5 g4h4 d3e4 h4g3
                                   e4g6
 7    <=  3.20    15.26    2561692 d8d5 c4d5 a5a6 e2e3 a6d3 e3f4 f7f6 c1c3
                                   e5g6 g7g6 e6e5 f4g4 h7h5 g4h4 d3e4 h4g3
                                   e4g6
 7    <=  3.17    15.41    2592694 d8d5 c4d5 a5a6 e2e3 a6d3 e3f4 f7f6 c1c3
                                   e5g6 g7g6 e6e5 f4g4 h7h5 g4h4 d3e4 h4g3
                                   e4g6
 7    >=  3.11    15.48    2612534 d8d5 c4d5 a5a6 e2e3 a6d3 e3f4 f7f6 c1c3
                                   e5g6 g7g6 e6e5 f4g4 h7h5 g4h4 d3e4 h4g3
                                   e4g6
 7    >=  3.12    15.56    2633132 d8d5 c4d5 a5a6 e2e3 a6d3 e3f4 f7f6 c1c3
                                   e5g6 g7g6 e6e5 f4g4 h7h5 g4h4 d3e4 h4g3
                                   e4g6
 7    >=  3.17    15.87    2692043 d8d5 c4d5 a5a6 e2e3 a6d3 e3f4 f7f6 c1c3
                                   e5g6 g7g6 e6e5 f4g4 h7h5 g4h4 d3e4 h4g3
                                   e4g6
 7        3.17    15.87    2692043 d8d5 c4d5 a5a6 e2e3 a6d3 e3f4 f7f6 c1c3
                                   e5g6 g7g6 e6e5 f4g4 h7h5 g4h4 d3e4 h4g3
                                   e4g6

Tord





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