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Subject: Re: Testposition: Fritz6 see not mate in 10, Tiger 14 directly!

Author: Robert Hyatt

Date: 21:38:43 07/12/01

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On July 12, 2001 at 13:04:05, Eduard Nemeth wrote:

>On July 12, 2001 at 11:10:51, Robert Hyatt wrote:
>
>>On July 11, 2001 at 12:58:06, Eduard Nemeth wrote:
>>
>>>On July 11, 2001 at 12:18:27, Eduard Nemeth wrote:
>>>
>>>>...fallow me up and down, all the way and allround,
>>>>take my hand and say you'll fallow me...
>>>>(John Denver)
>>>>
>>>>Position after move 13:
>>>>
>>>>[D]r1bq1b1r/pp1pp1pp/2nn4/4k3/6Q1/2N2PN1/P5PP/q1B1K2R w K -
>>>>
>>>>:-)
>>>>
>>>>[Event "5'"]
>>>>[Site "Stuttgart"]
>>>>[Date "2001.07.11"]
>>>>[Round "?"]
>>>>[White "Nemeth,Eduard"]
>>>>[Black "Fritz 6c,P600"]
>>>>[ECO "B21"]
>>>>[Result "1-0"]
>>>>
>>>>1. e4 {4} c5 {0} 2. d4 {2} cxd4 {0} 3. Bc4 {7} Nc6 {0}
>>>>4. Nh3 {2} Nf6 {-0.75/10 9} 5. Ng1 {7} Nxe4 {-1.94/10 6}
>>>>6. Bxf7+ {3} Kxf7 {-2.56/7 0} 7. Qh5+ {3} Ke6 {-1.69/10 8}
>>>>8. Qg4+ {5} Kd5 {-1.50/10 3} 9. c4+ {4} dxc3 {-1.59/10 10}
>>>>10. f3 {12} Nd6 {-1.94/9 7} 11. Ne2 {12} cxb2 {-2.75/8 10}
>>>>12. Nbc3+ {5} Ke5 {-1.13/10 9} 13. Ng3 {12} bxa1=Q
>>>>{-11.56/8 2} 14. Qg5+ {7} Kd4 {-11.28/10 5} 15. Nge2+ {10}
>>>>Kc4 {-9.97/11 0} 16. Qd5+ {8} Kb4 {-11.44/7 0} 17. a3+ {7}
>>>>Qxa3 {-11.72/7 0} 18. Bxa3+ {2} Kxa3 {#6/8 0} 19. Kd2 {3}
>>>>Ne4+ {#4/7 0} 20. fxe4 {2} Nb4 {#3/4 0} 21. Ra1+ {5} Kb2
>>>>{#2/3 0} 22. Rb1+ {17} Ka3 {#1/2 0} 23. Qb3# {3} 1-0
>>>>
>>>>Eduard
>>>
>>>Fritz see not mate, but Tiger 14 directly!
>>>
>>>Nemeth,E - Fritz6c, position after move 13. Ng3 (it is a mate in 10 Moves!):
>>>
>>>[D]r1bq1b1r/pp1pp1pp/2nn4/4k3/6Q1/2N2PN1/Pp4PP/R1B1K2R b KQ - 0 1
>>>
>>>Analysis by Fritz6c (Engine from 2001/04/20):
>>>
>>>13...bxa1D
>>>  -+  (-10.56)   Tiefe: 1/8   00:00:00
>>>13...bxa1D
>>>  -+  (-18.06)   Tiefe: 1/11   00:00:00
>>>13...bxa1D 14.Kd2
>>>  -+  (-17.97)   Tiefe: 2/8   00:00:00
>>>13...bxa1D 14.Dg5+ Ke6 15.Dd2
>>>  -+  (-18.00)   Tiefe: 3/12   00:00:00  1kN
>>>13...bxa1D 14.Dg5+ Ke6 15.De3+ Kf7 16.0-0
>>>  -+  (-17.84)   Tiefe: 4/16   00:00:00  4kN
>>>13...bxa1D--
>>>  -+  (-17.53)   Tiefe: 5/18   00:00:00  8kN
>>>13...bxa1D 14.Dg5+ Kd4 15.Sge2+ Kc4 16.Dd5+ Kb4 17.a3+ Dxa3 18.Lxa3+
>>>  -+  (-12.38)   Tiefe: 5/18   00:00:00  23kN
>>>13...bxa1D 14.Dg5+ Kd4 15.Sge2+ Kc4 16.Dd5+ Kb4 17.a3+ Dxa3 18.Lxa3+
>>>  -+  (-12.38)   Tiefe: 6/20   00:00:00  64kN
>>>13...bxa1D--
>>>  -+  (-12.06)   Tiefe: 7/23   00:00:00  80kN
>>>13...bxa1D 14.Dg5+ Kd4 15.Sge2+ Kc4 16.Df4+ Kc5 17.0-0 Dxc3
>>>  -+  (-11.47)   Tiefe: 7/23   00:00:00  150kN
>>>13...bxa1D 14.Dg5+ Kd4 15.Sge2+ Kc4 16.Df4+ Kc5 17.0-0 Dxc3 18.Sxc3
>>>  -+  (-11.56)   Tiefe: 8/25   00:00:01  498kN
>>>13...bxa1D 14.Dg5+ Kd4 15.Sge2+ Kc4 16.Df4+ Kc5 17.0-0 Dxc3 18.Sxc3
>>>  -+  (-11.44)   Tiefe: 9/28   00:00:03  1347kN
>>>13...bxa1D 14.Dg5+ Kd4 15.Sge2+ Kc4 16.Df4+ Kc5 17.0-0 Dxc3 18.Sxc3
>>>  -+  (-11.38)   Tiefe: 10/36   00:00:08  3754kN
>>>13...bxa1D 14.Dg5+ Kd4 15.Sge2+ Kc4 16.Df4+ Kc5 17.0-0 Dxc3 18.Sxc3
>>>  -+  (-11.28)   Tiefe: 11/35   00:00:25  11143kN
>>>13...bxa1D--
>>>  -+  (-10.97)   Tiefe: 12/35   00:00:35  15523kN
>>>13...bxa1D 14.Dg5+ Kd4 15.Sge2+ Kc4 16.Dd5+ Kb4 17.0-0 Db6+ 18.Kh1
>>>  -+  (-10.28)   Tiefe: 12/38   00:01:20  36208kN
>>>13...bxa1D--
>>>  -+  (-9.97)   Tiefe: 13/34   00:01:48  48372kN
>>>13...bxa1D 14.Dg5+ Kd4 15.Sge2+ Kc4 16.Dd5+ Kb4 17.0-0 b5 18.La3+
>>>  -+  (-8.50)   Tiefe: 13/42   00:03:47  104404kN
>>>13...bxa1D--
>>>  -+  (-8.19)   Tiefe: 14/40   00:05:36  151261kN
>>>13...bxa1D 14.Dg5+ Kd4 15.Sge2+ Kc4 16.Dd5+ Kb4 17.a3+ Dxa3 18.Lxa3+
>>>  =  (0.00)   Tiefe: 14/52   00:09:01  253472kN
>>>
>>>(Nemeth, Stuttgart 11.07.2001)
>>>
>>>Analysies Tiger 14.0:
>>>
>>>00:00:00.3	16,42	7	71788	bxa1Q Qg5+ Kd4 Nge2+ Kc4 Qd5+ Kb4 a3+ Qxa3 Bxa3+ Kxa3
>>>00:00:00.2	15,38	7	113563	bxa1Q Qg5+ Kd4 Nge2+ Kc4 Qd5+ Kb4 a3+ Qxa3 Bxa3+ Kxa3
>>>O-O
>>>00:00:02.5	13,92	8	344001	bxa1Q Qg5+ Kd4 Nge2+ Kc4 Qd5+ Kb4 a3+ Qxa3 Bxa3+ Kxa3
>>>Kd2 b5 Nxb5+ Nxb5 Ra1+
>>>00:00:05.1	-Mate in 10	9	1060340	bxa1Q Qg5+ Kd4 Nge2+ Kc4 Qd5+ Kb4 a3+ Qxa3
>>>Bxa3+ Kxa3 Kd2 b5 Qc5+ b4 Ra1+ Kb2
>>>00:00:17.5	8,10	9	3226788	bxc1B Qh5+ g5 Rxc1 e6 O-O Bg7 Rfe1+ Kf6 Nge4+ Nxe4
>>>Rxe4
>>>00:00:21.2	8,96	9	3770919	bxc1R+ Rxc1 g6
>>>
>>>Tiger 14.0 is the best!
>>>
>>>Eduard
>>
>>
>>
>>It takes Crafty about 20 seconds to spot this.  At depth=10.  At depth=9, it had
>>a score of 0.00 (repetition draw) which is the last score fritz reported.  I
>>suspect Fritz will find it at the next search iteration...
>>
>>                9->  14.76   0.00   1. Qg5+ Kd4 2. Nge2+ Kc4 3. Qd5+ Kb4
>>                                    4. a3+ Qxa3 5. Bxa3+ Kxa3 6. Nc1 Kb4
>>                                    7. N3a2+ Ka4 8. Nc3+ Kb4
>>               10    18.54     ++   1. Qg5+!!
>>               10    41.63  Mat10   1. Qg5+ Kd4 2. Nge2+ Kc4 3. Qd5+ Kb4
>>                                    4. a3+ Qxa3 5. Bxa3+ Kxa3 6. Kd2 Nc4+
>>                                    7. Qxc4 Nb4 8. Ra1+ Kb2 9. Qxb4+ Kxa1
>>                                    10. Qa3#
>>               10->  54.39  Mat10   1. Qg5+ Kd4 2. Nge2+ Kc4 3. Qd5+ Kb4
>>                                    4. a3+ Qxa3 5. Bxa3+ Kxa3 6. Kd2 Nc4+
>>                                    7. Qxc4 Nb4 8. Ra1+ Kb2 9. Qxb4+ Kxa1
>>                                    10. Qa3#
>>               11     2:27  Mat10   1. Qg5+ Kd4 2. Nge2+ Kc4 3. Qd5+ Kb4
>>                                    4. a3+ Qxa3 5. Bxa3+ Kxa3 6. Kd2 Nc4+
>>                                    7. Qxc4 Qa5 8. Ra1+ Kb2 9. Rxa5 Nxa5
>>                                    10. Qa2#
>
>
>Thanks Robert,
>
>yery good time from Crafry (from Yace too)!
>
>On my P600 Fitz 6c find this mate after about 13 minutes --> bad time for Fritz!
>
>Kind regards,
>Eduard


This is a very sensitive part of all chess engines.  I believe mine does worse
tactically than most others.  Because I rely a lot on hardware to help with
tactics, Crafty generally does poorly when compared to other programs on equal
hardware...

Every program will have a few positions it does well on, and a few it does
poorly on.  Fritz has more of the former than the latter.  Crafty is the
opposite, in general.




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