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Subject: Re: Interesting game Fritz7 vs Shredder 6

Author: Sune Larsson

Date: 04:06:17 02/10/02

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>Fritz7 simply blundered at move 55
>
>Here is Deep Fritz's analysis(p800 48 mbytes hash 11 minutes of search):
>
>Deep Fritz needs depth 14 to find that 55.Rd3 is bad
>
>
>New game - Crafty 18.12
>[D]6k1/4qp2/2b4p/4P1pP/p2Q4/1p4R1/5PP1/6K1 w - - 0 1
>
>Analysis by Deep Fritz:
>
>55.Rxb3--
>  ³  (-0.34)   Depth: 1/2   00:00:00
>55.Rxb3-- axb3
>  -+  (-3.62)   Depth: 1/3   00:00:00
>55.Rd3!
>  -+  (-2.34)   Depth: 1/3   00:00:00
>55.Rd3!
>  ²  (0.34)   Depth: 1/3   00:00:00
>55.Rd3 Qe6 56.Qd8+ Kg7
>  ²  (0.38)   Depth: 2/7   00:00:00
>55.Rd3 Qe6 56.Qb2
>  ²  (0.41)   Depth: 3/7   00:00:00
>55.Rd3 Qe6 56.Qb2 Bd5
>  ²  (0.38)   Depth: 4/10   00:00:00  1kN
>55.Rd3 Bb5 56.Re3 Qe6 57.Qb2
>  ²  (0.28)   Depth: 5/15   00:00:00  6kN
>55.f4!
>  ²  (0.31)   Depth: 5/17   00:00:00  12kN
>55.f4! Qe6 56.fxg5 hxg5 57.Qd8+ Kh7
>  ²  (0.38)   Depth: 5/17   00:00:00  15kN
>55.f4 Qd7 56.Qxd7 Bxd7 57.fxg5 hxg5 58.Rxg5+ Kh7 59.Rg3 Be6
>  =  (0.16)   Depth: 6/18   00:00:00  26kN
>55.Rd3!
>  =  (0.19)   Depth: 6/18   00:00:00  32kN
>55.Rd3! Bb5 56.Re3 Qe6 57.Qb2 Bc6
>  =  (0.25)   Depth: 6/18   00:00:00  35kN
>55.Rd3 Bb5 56.Re3 Qe6 57.Qb2 Qg4 58.Rh3
>  =  (0.25)   Depth: 7/18   00:00:00  54kN
>55.Rd3 Bb5 56.Re3 Qe6 57.Qb2 Qg4 58.Rh3 Qf4
>  =  (0.22)   Depth: 8/19   00:00:00  147kN
>55.Rd3 Bb5 56.Re3 Qd7 57.Qb4 Bc6 58.Re1 Qe6 59.Rc1
>  =  (0.22)   Depth: 9/23   00:00:00  467kN
>55.Rd3 Bb5 56.Rd2 a3 57.Qd5 Qb4 58.e6 Bc6 59.Qd8+ Kg7 60.e7
>  =  (0.22)   Depth: 10/25   00:00:01  1022kN
>55.Rd3 Bb5 56.Re3 Qd7 57.Qb4 Bc6 58.Re1 Qd5 59.f3 Qe6 60.Rc1
>  =  (0.19)   Depth: 11/27   00:00:07  4469kN
>55.Rd3 Bb5 56.Re3 Qe6 57.Qd8+ Kg7 58.Qa5 Bc6 59.Qc3 Kh7
>  =  (0.16)   Depth: 12/28   00:00:13  8318kN
>55.Rd3 Bb5 56.Re3 Qe6 57.Qd8+ Kg7 58.Qa5 Qd5 59.Qc3 Qd1+ 60.Re1 Qxh5
>  =  (0.09)   Depth: 13/33   00:00:29  18241kN
>55.Rd3--
>  =  (-0.22)   Depth: 14/33   00:01:32  58320kN
>55.Rd3-- Qd7 56.Qxd7 Bxd7 57.Rxd7 b2 58.Rb7 a3 59.e6 a2 60.exf7+ Kf8
>  µ  (-0.81)   Depth: 14/33   00:01:36  60870kN
>55.Kh2!
>  µ  (-0.78)   Depth: 14/35   00:06:03  239784kN
>
>(Blass, Tel-aviv 09.02.2002)


 I think hash is an issue here. I also used P III 800 but with 256 Mb hash
 instead of yours 48 Mb. Now Deep Fritz finds 5.Kh2 after 3:21 (yours 6:03).
 But Fritz 7 is faster here. Finds it after 1:54 on P III 256 Mb hash.


Nytt parti
6k1/4qp2/2b4p/4P1pP/p2Q4/1p4R1/5PP1/6K1 w - - 0 1

Analysis by Deep Fritz:

1.Txb3--
  ³  (-0.34)   Djup: 1/2   00:00:00
1.Td3 Lb5 2.Te3 De6 3.Db2
  ²  (0.28)   Djup: 5/15   00:00:00  6kN
1.Td3 Lb5 2.Te3 De6 3.Db2
  ²  (0.28)   Djup: 5/15   00:00:00  6kN
1.Td3 Lb5 2.Te3 De6 3.Db2
  ²  (0.28)   Djup: 5/15   00:00:00  6kN
1.Td3 Lb5 2.Te3 De6 3.Db2
  ²  (0.28)   Djup: 5/15   00:00:00  6kN
1.Td3 Lb5 2.Te3 De6 3.Db2
  ²  (0.28)   Djup: 5/15   00:00:00  6kN
1.Td3 Lb5 2.Te3 De6 3.Db2
  ²  (0.28)   Djup: 5/15   00:00:00  6kN
1.Td3 Lb5 2.Te3 De6 3.Db2
  ²  (0.28)   Djup: 5/15   00:00:00  6kN
1.f4!
  ²  (0.31)   Djup: 5/17   00:00:00  12kN
1.f4 De6 2.fxg5 hxg5 3.Dd8+ Kh7
  ²  (0.38)   Djup: 5/17   00:00:00  15kN
1.f4 Dd7 2.Dxd7 Lxd7 3.fxg5 hxg5 4.Txg5+ Kh7 5.Tg3 Le6
  =  (0.16)   Djup: 6/18   00:00:00  26kN
1.Td3!
  =  (0.19)   Djup: 6/18   00:00:00  32kN
1.Td3 Lb5 2.Te3 De6 3.Db2 Lc6
  =  (0.25)   Djup: 6/18   00:00:00  35kN
1.Td3 Lb5 2.Te3 De6 3.Db2 Dg4 4.Th3
  =  (0.25)   Djup: 7/18   00:00:00  54kN
1.Td3 Lb5 2.Te3 De6 3.Db2 Dg4 4.Th3 Df4
  =  (0.22)   Djup: 8/19   00:00:00  147kN
1.Td3 Lb5 2.Te3 Dd7 3.Db4 Lc6 4.Te1 De6 5.Tc1
  =  (0.22)   Djup: 9/23   00:00:01  464kN
1.Td3 Lb5 2.Td2 a3 3.Dd5 Db4 4.e6 Lc6 5.Dd8+ Kg7 6.e7
  =  (0.22)   Djup: 10/25   00:00:01  996kN
1.Td3 Lb5 2.Te3 Dd7 3.Db4 Lc6 4.Te1 Dd5 5.f3 De6 6.Tc1
  =  (0.19)   Djup: 11/27   00:00:05  3052kN
1.Td3 Lb5 2.Te3 Dd7 3.Db4 Lc6 4.Te1 De6 5.f3 Kg7 6.Tc1 f6
  =  (0.13)   Djup: 12/31   00:00:21  12544kN
1.Td3 Lb5 2.Te3 Dd7 3.Db4 Lc6 4.Te1 De6 5.Tc1 Dd5
  =  (0.13)   Djup: 13/33   00:00:43  25915kN
1.Td3--
  =  (-0.19)   Djup: 14/32   00:01:14  45292kN
1.Td3 Dd7 2.Dxd7 Lxd7 3.Txd7 b2 4.Tb7 a3 5.e6 a2 6.exf7+ Kf8
  µ  (-0.81)   Djup: 14/32   00:01:17  47238kN
1.Kh2!
  µ  (-0.78)   Djup: 14/35   00:03:21  131313kN

(Larsson, KIL 10.02.2002)


Nytt parti
6k1/4qp2/2b4p/4P1pP/p2Q4/1p4R1/5PP1/6K1 w - - 0 1

Analysis by Fritz 7:

1.f4!
  ²  (0.41)   Djup: 7/20   00:00:00  168kN
1.f4 Kh7 2.fxg5 hxg5 3.Dc3 Le4 4.Db2 f5 5.Te3
  ²  (0.38)   Djup: 8/22   00:00:01  409kN
1.Td3!
  ²  (0.41)   Djup: 8/22   00:00:01  471kN
1.Td3 Lb5 2.Te3 Dd7 3.Db4 Lc6
  ²  (0.44)   Djup: 8/22   00:00:01  512kN
1.Td3 Lb5 2.Te3 De6 3.Te1 f6 4.Da1 fxe5 5.Txe5 Df6
  ²  (0.44)   Djup: 9/23   00:00:02  771kN
1.Td3 Lb5 2.Te3 Lc6 3.Da1 Dd8 4.Tg3 Dd2 5.Tc3 Da2 6.Dxa2
  ²  (0.38)   Djup: 10/26   00:00:04  1574kN
1.Td3 Lb5 2.Te3 Dd7 3.Db4 Lc6 4.f3 g4 5.fxg4 Dd1+ 6.Te1
  =  (0.22)   Djup: 11/27   00:00:09  3517kN
1.Td3 Lb5 2.Te3 Dd7 3.Db4 Lc6 4.Te1 De6 5.f3 f6 6.exf6 Dxf6 7.Tb1
  ²  (0.28)   Djup: 12/30   00:00:25  10260kN
1.Td3--
  =  (0.00)   Djup: 13/34   00:00:43  18246kN
1.Td3 Dd7 2.Dxd7 Lxd7 3.Txd7 b2 4.Td1 a3 5.e6 fxe6 6.Td8+ Kg7 7.Td7+ Kf6 8.Td1
  -+  (-1.53)   Djup: 13/34   00:00:44  19013kN
1.f4!
  -+  (-1.50)   Djup: 13/34   00:00:56  24557kN
1.f4!
  µ  (-1.34)   Djup: 13/34   00:01:04  28524kN
1.f4 Dd7 2.Db6 Dd1+ 3.Kh2 Dxh5+ 4.Kg1 Dd1+ 5.Kh2 Dc1 6.fxg5 b2 7.g6 Kg7
  µ  (-1.12)   Djup: 13/34   00:01:08  30406kN
1.Dc3!
  µ  (-1.09)   Djup: 13/34   00:01:09  30972kN
1.Dc3!
  µ  (-0.94)   Djup: 13/34   00:01:13  32546kN
1.Te3!
  µ  (-0.91)   Djup: 13/34   00:01:22  37257kN
1.Kh2!
  µ  (-0.87)   Djup: 13/34   00:01:54  52317kN


(Larsson, KIL 10.02.2002)


>



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