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Subject: Re: Two hard mates??

Author: chandler yergin

Date: 13:10:14 02/04/06

Go up one level in this thread


New game,
[D]8/4p1k1/1pq1p1p1/2p5/PP1b1P2/4rRPp/7P/3Q1R1K b - - 0 1

Analysis by Rybka 1.0 Beta 32-bit:

1...Ra3
  µ  (-0.73)   Depth: 3   00:00:04
1...Ra3
  µ  (-0.89)   Depth: 4   00:00:06
1...Ra3 2.bxc5
  µ  (-1.01)   Depth: 5   00:00:11
1...Ra3 2.bxc5 bxc5
  µ  (-1.01)   Depth: 6   00:00:16  2kN
1...Ra3 2.Qe2 cxb4 3.g4
  -+  (-2.09)   Depth: 7   00:00:50  10kN
1...Ra3 2.bxc5 Qe4 3.cxb6 Ra1
  -+  (-2.49)   Depth: 8   00:01:12  17kN
1...Ra3 2.Qe2 cxb4 3.g4 Qd5 4.f5
  -+  (-2.42)   Depth: 9   00:01:38  31kN
1...Qe4 2.bxc5 Ra3 3.cxb6 Ra1 4.Qxa1
  -+  (-3.89)   Depth: 9   00:01:53  40kN
1...Qe4 2.bxc5 Ra3 3.cxb6 Ra1 4.Qxa1 Bxa1 5.f5
  -+  (-3.89)   Depth: 10   00:02:01  51kN
1...Qe4 2.bxc5 Ra3 3.c6 Ra1 4.Qxa1 Bxa1 5.c7 Qc2 6.R3f2
  -+  (-3.89)   Depth: 11   00:02:18  93kN
1...Qe4 2.bxc5 Ra3 3.a5 bxc5 4.a6 Ra1 5.Qxa1 Bxa1 6.a7
  -+  (-3.95)   Depth: 12   00:02:21  158kN
1...Qe4 2.a5 Ra3 3.f5 Ra1 4.Qxa1 Bxa1 5.fxg6 bxa5 6.bxa5
  -+  (-4.75)   Depth: 13   00:02:25  456kN
1...Qe4 2.a5 Ra3 3.axb6 Ra1 4.Qxa1 Bxa1 5.b7 Qxb7 6.bxc5
  -+  (-5.32)   Depth: 14   00:02:28  741kN
1...Qe4 2.bxc5 Ra3 3.cxb6 Ra1 4.Qxa1 Bxa1 5.b7 Qxb7 6.g4
  -+  (-7.09)   Depth: 15   00:02:39  1890kN
1...Qe4 2.bxc5 Ra3 3.cxb6 Ra1
  -+  (-11.04)   Depth: 16   00:03:08  4565kN
1...Qe4 2.bxc5 Ra3 3.cxb6 Ra1
  -+  (-320.00)   Depth: 17   00:06:28  11653kN

(,  04.02.2006)
The Engine Stalled here. It's NOT a BUG! (despite what some Programmers might
say)
The Hash Tables are filled. Simply make a move and the Search & Evaluation
begins again from PLy 1.
New game,
[D]8/4p1k1/1p2p1p1/2p5/PP1bqP2/4rRPp/7P/3Q1R1K w - - 0 1

Analysis by Rybka 1.0 Beta 32-bit:

2.bxc5 Ra3 3.cxb6 Ra1
  -+  (-4.99)   Depth: 7   00:00:04
2.bxc5 Ra3 3.cxb6 Ra1
  -+  (-4.99)   Depth: 7   00:00:04
2.bxc5 Ra3 3.cxb6 Ra1
  -+  (-4.99)   Depth: 7   00:00:04
2.bxc5 Ra3 3.cxb6 Ra1
  -+  (-4.99)   Depth: 7   00:00:04
2.bxc5 Ra3 3.cxb6 Ra1
  -+  (-4.74)   Depth: 7   00:00:05
2.bxc5 Ra3 3.cxb6 Ra1 4.Qxa1 Bxa1 5.b7 Qxb7 6.g4 Bd4
  -+  (-4.80)   Depth: 8   00:00:15
2.bxc5 Ra3 3.cxb6 Ra1 4.Qxa1 Bxa1 5.b7 Qxb7 6.g4 Bd4
  -+  (-4.80)   Depth: 9   00:00:22  2kN
2.bxc5 Ra3 3.cxb6 Ra1 4.Qxa1 Bxa1 5.b7 Qxb7 6.g4 Bd4
  -+  (-4.61)   Depth: 10   00:00:44  5kN
2.bxc5 Ra3 3.cxb6 Ra1 4.Qxa1 Bxa1 5.b7 Qxb7 6.g4 Bd4
  -+  (-7.03)   Depth: 11   00:01:01  8kN
2.bxc5 Ra3 3.cxb6 Ra1 4.Qxa1 Bxa1 5.b7 Qxb7 6.g4 Bd4
  -+  (-7.03)   Depth: 12   00:01:15  14kN
2.bxc5 Ra3 3.cxb6 Ra1 4.Qxa1 Bxa1 5.b7 Qxb7 6.g4 Bd4
  -+  (-320.00)   Depth: 13   00:01:16  14kN

(,  04.02.2006)
New game,
[D]8/4p1k1/1p2p1p1/2P5/P2bqP2/4rRPp/7P/3Q1R1K b - - 0 1

Analysis by Rybka 1.0 Beta 32-bit:

2...Ra3 3.cxb6 Ra1 4.Qxa1 Bxa1 5.b7 Qxb7 6.g4 Bd4 7.f5
  -+  (-1.45)   Depth: 3   00:00:00
2...Ra3 3.cxb6 Ra1 4.Qxa1 Bxa1 5.b7 Qxb7 6.g4 Bd4 7.f5
  -+  (-3.97)   Depth: 4   00:00:00
2...Ra3 3.cxb6 Ra1 4.Qxa1 Bxa1 5.b7 Qxb7 6.g4 Bd4 7.f5
  -+  (-5.17)   Depth: 5   00:00:00
2...Ra3 3.cxb6 Ra1 4.Qxa1 Bxa1 5.b7 Qxb7 6.g4 Bd4 7.f5
  -+  (-4.74)   Depth: 6   00:00:00
2...Ra3 3.cxb6 Ra1 4.Qxa1 Bxa1 5.b7 Qxb7 6.g4 Bd4 7.f5
  -+  (-4.80)   Depth: 7   00:00:00
2...Ra3 3.cxb6 Ra1 4.Qxa1 Bxa1 5.b7 Qxb7 6.g4 Bd4 7.f5
  -+  (-4.80)   Depth: 8   00:00:00  1kN
2...Ra3 3.cxb6 Ra1 4.Qxa1 Bxa1 5.b7 Qxb7 6.g4 Bd4 7.f5
  -+  (-4.61)   Depth: 9   00:00:02  2kN
2...Ra3 3.cxb6 Ra1 4.Qxa1 Bxa1 5.b7 Qxb7 6.g4 Bd4 7.f5
  -+  (-7.03)   Depth: 10   00:00:04  4kN
2...Ra3 3.cxb6 Ra1 4.Qxa1 Bxa1 5.b7 Qxb7 6.g4 Bd4 7.f5
  -+  (-7.03)   Depth: 11   00:00:04  6kN
2...Ra3 3.cxb6 Ra1 4.Qxa1 Bxa1 5.b7 Qxb7 6.g4 Bd4 7.f5
  -+  (-320.00)   Depth: 12   00:00:05  7kN

(,  04.02.2006)
It finds the Mate but is tooo slow  (in real time kN/s)to probe the EGtb's
Which is why I never use it for deep analysis, and I don't have all day!
New game,
[D]8/4p1k1/1p2p1p1/2P5/P2bqP2/4rRPp/7P/3Q1R1K b - - 0 1

Analysis by Shredder 8:

2...Rxf3 3.Qxf3 Qxf3+ 4.Rxf3 Bxc5
  +-  (2.37)   Depth: 1/5   00:00:21
2...Bxc5
  +-  (1.99)   Depth: 1/5   00:00:21
2...Bxc5
  +-  (1.99)   Depth: 1/5   00:00:21
2...Bxc5 3.g4 Rxf3 4.Rxf3
  +-  (2.15)   Depth: 2/7   00:00:22
2...bxc5 3.Qa1
  +-  (2.10)   Depth: 2/7   00:00:22
2...bxc5 3.g4
  +-  (1.93)   Depth: 2/7   00:00:22
2...bxc5 3.Kg1 Rxf3+ 4.Qxd4+ cxd4
  +-  (1.68)   Depth: 3/6   00:00:23
2...bxc5 3.g4 Re2
  +-  (1.63)   Depth: 3/6   00:00:23
2...bxc5 3.Kg1 Rxf3+ 4.Qxd4+ cxd4
  ±  (1.38)   Depth: 4/8   00:00:24
2...bxc5 3.g4 Ra3 4.g5
  ±  (1.07)   Depth: 4/12   00:00:25
2...bxc5 3.g4 Ra3 4.g5 Be3
  ±  (0.93)   Depth: 5/9   00:00:25
2...bxc5 3.Kg1 Rxf3+ 4.Rf2
  ²  (0.68)   Depth: 6/12   00:00:28
2...bxc5 3.g4 Ra3 4.a5 Ra1 5.Qxd4+ cxd4 6.Rxa1
  =  (0.18)   Depth: 6/12   00:00:29
2...bxc5 3.f5 exf5 4.a5 Qa8 5.a6 Rxf3 6.Qxf3 Qxa6
  -+  (-2.15)   Depth: 6/14   00:00:34
2...bxc5 3.f5 exf5 4.a5 Qa8 5.R1f2 Qxa5 6.Rxe3 Bxe3 7.Rf3 Qa8
  -+  (-2.24)   Depth: 7/16   00:00:44  26kN
2...bxc5 3.f5 Ra3 4.f6+ exf6 5.Qb3 Rxb3 6.g4 Rxf3
  -+  (-2.49)   Depth: 8/16   00:01:02  44kN
2...bxc5 3.f5 Ra3 4.f6+ exf6 5.Qb3 Rxb3 6.g4 Rxf3
  -+  (-2.99)   Depth: 8/16   00:01:05  48kN
2...bxc5 3.a5 Ra3 4.a6 Ra1 5.Qxa1 Bxa1 6.Kg1 Bd4+ 7.Kh1
  -+  (-4.53)   Depth: 8/17   00:01:15  68kN
2...bxc5 3.f5 Ra3 4.fxg6 Ra1 5.Qxa1 Bxa1 6.a5 Bb2 7.Kg1 Qe3+ 8.Rxe3
  -+  (-4.59)   Depth: 9/18   00:01:22  82kN
2...bxc5 3.f5 Ra3 4.fxg6 Ra1 5.Qxa1 Bxa1 6.a5 Bb2 7.Kg1 Bd4+ 8.Kh1 Qa8 9.g4 Qxa5
  -+  (-4.77)   Depth: 10/23   00:01:36  111kN
2...bxc5 3.f5 Ra3 4.fxg6 Ra1 5.Qxa1 Bxa1 6.g4 Qxa4 7.Rxh3 Kxg6 8.Kg2
  -+  (-5.02)   Depth: 11/19   00:01:41  164kN
2...bxc5 3.a5 Ra3 4.a6 Ra1 5.Qxa1 Bxa1 6.a7 Qa4 7.g4 Qxa7 8.f5 gxf5 9.Rxh3
  -+  (-5.16)   Depth: 11/19   00:01:44  245kN
2...bxc5 3.f5 Ra3 4.fxe6 Ra1 5.Qxa1 Bxa1 6.a5 Qa8 7.g4 Bb2 8.R1f2 Bd4 9.Rf1 Qxa5
10.Rxh3
  -+  (-5.20)   Depth: 12/24   00:01:45  300kN
2...bxc5 3.f5 Ra3 4.fxe6 Ra1 5.Qxa1 Bxa1 6.a5 Qa8 7.g4 Bd4 8.Ra1 Bxa1 9.Rxh3
  -+  (-5.45)   Depth: 13/28   00:01:46  428kN
2...bxc5 3.f5 Ra3 4.fxg6 Ra1 5.Qxa1 Bxa1 6.a5 Kxg6 7.g4 Qa8 8.a6 Qxa6 9.R1f2 Bd4
10.Rxh3 Bxf2
  -+  (-5.94)   Depth: 13/29   00:01:46  613kN
2...bxc5 3.f5 Ra3 4.fxg6 Ra1 5.Qxa1 Bxa1 6.a5 Kxg6 7.g4 Qa8 8.Kg1 Bd4+ 9.R3f2
  -+  (-6.19)   Depth: 14/29   00:01:48  937kN
2...bxc5 3.f5 Ra3 4.fxg6 Ra1 5.Qxa1 Bxa1 6.a5 Kxg6 7.g4 Qa8 8.Kg1 Bd4+ 9.Kh1
Qxa5 10.R3f2 Bxf2 11.Rxf2 Qa1+ 12.Rf1 Qxf1#
  -+  (-6.69)   Depth: 14/34   00:01:48  1153kN
2...bxc5 3.a5 Ra3 4.a6 Ra1 5.Qxa1 Bxa1 6.a7 Bd4 7.a8Q Qxa8 8.g4 Qa6 9.f5 Qe2
10.fxg6 Qg2#
  -+  (-10.60)   Depth: 14/38   00:01:57  4404kN
2...bxc5 3.f5 Ra3 4.f6+ exf6 5.a5 Ra1 6.Qxa1 Bxa1 7.a6 Bd4 8.a7 Qe2 9.R3f2 Bxf2
10.a8Q Qxf1#
  -+  (-10.61)   Depth: 15/32   00:02:00  5181kN
2...bxc5 3.a5 Ra3 4.f5 gxf5 5.a6 Ra1 6.Qxa1 Bxa1 7.a7 Qa8 8.Kg1 Bd4+ 9.Kh1 Qxa7
10.Rg1 Bxg1 11.g4 fxg4 12.Rxh3
  -+  (-10.62)   Depth: 16/38   00:02:03  6457kN
2...bxc5 3.f5 Ra3 4.a5 gxf5 5.a6 Ra1 6.Qxa1 Bxa1 7.a7 Qa8 8.Kg1 Bd4+ 9.Kh1 Qxa7
10.Rg1 Bxg1 11.g4 fxg4 12.Rf1 Bxh2 13.Kxh2
  -+  (-10.83)   Depth: 17/40   00:02:07  7705kN
2...bxc5 3.f5 Ra3 4.a5 gxf5 5.a6 Ra1 6.Qxa1 Bxa1 7.a7 Qa8 8.Kg1 Bd4+ 9.Kh1 Qxa7
10.Rg1 Bxg1 11.g4 fxg4 12.Rf1 Bxh2 13.Kxh2
  -+  (-11.08)   Depth: 18/44   00:02:18  11852kN
2...bxc5 3.f5 Ra3 4.a5 gxf5 5.a6 Ra1 6.Qxa1 Bxa1 7.a7 Qa8 8.Kg1 Bd4+ 9.Kh1 Qxa7
10.Rg1 Bxg1 11.g4 fxg4 12.Rf1 Bxh2 13.Kxh2 c4 14.Rf7+ Kxf7
  -+  (-11.58)   Depth: 18/44   00:02:22  13027kN
2...bxc5 3.f5 Ra3 4.fxe6 Ra1 5.Qxa1 Bxa1 6.g4 Qxg4 7.Rxh3 Qxh3 8.Rxa1 Qf3+ 9.Kg1
Qg4+ 10.Kf2 Qd4+ 11.Ke2 Qxa1 12.a5 Qxa5 13.Kd1 Qa1+ 14.Kc2 Qa4+ 15.Kb1 c4 16.h4
Qd1+
  -+  (-15.30)   Depth: 18/46   00:03:05  33531kN
2...bxc5 3.f5 Ra3 4.fxe6 Ra1 5.Qxa1 Bxa1 6.g4 Qxg4 7.Rxh3 Qxh3 8.Rxa1 Qf3+ 9.Kg1
Qg4+ 10.Kf2 Qd4+ 11.Ke2 Qxa1 12.a5 Qxa5 13.Kd3 Qa3+ 14.Ke2 Qa2+ 15.Kd3 c4+
16.Kc3 Qb3+
  -+  (-15.55)   Depth: 19/46   00:03:44  54079kN
2...bxc5 3.f5 Ra3 4.fxe6 Ra1 5.Qxa1 Bxa1 6.g4 Qxg4 7.Rxh3 Qxh3 8.Rxa1 Qf3+ 9.Kg1
Qg4+ 10.Kf2 Qd4+ 11.Ke2 Qxa1 12.a5 Qxa5 13.Kd3 Qa6+ 14.Kc2 Qxe6 15.Kc3
  -+  (-15.65)   Depth: 19/50   00:04:00  61436kN
2...bxc5 3.f5 Ra3 4.fxe6 Ra1 5.Qxa1 Bxa1 6.g4 Qxg4 7.Rxh3 Qxh3 8.Rxa1 Qf3+ 9.Kg1
Qg4+ 10.Kf2 Qd4+ 11.Ke2 Qxa1 12.a5 Qxa5 13.Kd3 Qa6+ 14.Kc2 Qxe6 15.Kd1 Qh3
16.Kc2 Qxh2+
  -+  (-15.90)   Depth: 20/48   00:04:18  68627kN
2...bxc5 3.f5 Ra3 4.fxe6 Ra1 5.Qxa1 Bxa1 6.g4 Qxg4 7.Rxh3 Qxh3 8.Rxa1 Qf3+ 9.Kg1
Qg4+ 10.Kf2 Qd4+ 11.Ke2 Qxa1 12.a5 Qxa5 13.Kd3 Qa6+ 14.Kc2 Qxe6 15.h4 Qa2+
16.Kd3 c4+
  -+  (-16.08)   Depth: 20/52   00:04:36  76457kN
2...bxc5 3.f5 Ra3 4.fxe6 Ra1 5.Qxa1 Bxa1 6.g4 Qxg4 7.Rxh3 Qxh3 8.Rxa1 Qf3+ 9.Kg1
Qg4+ 10.Kf2 Qd4+ 11.Ke2 Qxa1 12.a5 Qxa5 13.Kd3 Qa6+ 14.Kc2 Qxe6 15.Kd1 Qh3
16.Kc1
  -+  (-16.33)   Depth: 21/50   00:05:10  91105kN
2...bxc5 3.f5 Ra3 4.fxe6 Ra1 5.Qxa1 Bxa1 6.g4 Qxg4 7.Rxh3 Qxh3 8.Rxa1 Qf3+ 9.Kg1
Qg4+ 10.Kf2 Qd4+ 11.Ke2 Qxa1 12.a5 Qxa5 13.Kd3 Qa6+ 14.Kc2 Qxe6 15.Kd3 Qb3+
  -+  (-16.33)   Depth: 21/54   00:05:33  101404kN
2...bxc5 3.f5 Ra3 4.fxe6 Ra1 5.Qxa1 Bxa1 6.g4 Qxg4 7.Rxh3 Qxh3 8.Rxa1 Qf3+ 9.Kg1
Qg4+ 10.Kf2 Qd4+ 11.Ke2 Qxa1 12.a5 Qxa5 13.Kd3 Qa3+ 14.Kc2 Qa2+ 15.Kc3 Qxh2
16.Kb3
  -+  (-16.57)   Depth: 22/56   00:07:54  167017kN
2...bxc5 3.f5 Ra3 4.fxe6 Ra1 5.Qxa1 Bxa1 6.g4 Qxg4 7.Rxh3 Qxh3 8.Rxa1 Qf3+ 9.Kg1
Qg4+ 10.Kf2 Qd4+ 11.Ke2 Qxa1 12.a5 Qxa5 13.Kd3 Qa3+ 14.Kc2 Qa2+ 15.Kc3 Qxh2
16.Kd3 Qd6+
  -+  (-16.82)   Depth: 23/54   00:11:30  262481kN
2...bxc5 3.f5 Ra3 4.fxe6 Ra1 5.Qxa1 Bxa1 6.g4 g5 7.Kg1 Bd4+ 8.R3f2 Qxg4+ 9.Kh1
Bxf2 10.Rxf2 Qxe6 11.Kg1 Qg4+ 12.Kh1 Qxa4 13.Re2 Qd1+ 14.Re1 Qxe1#
  -+  (-17.32)   Depth: 23/60   00:14:30  352720kN
2...bxc5 3.f5 Ra3 4.g4 Ra1 5.Qxa1 Bxa1 6.g5 gxf5 7.g6 Kxg6 8.a5 Kf6 9.a6 Bd4
  -+  (-#150)   Depth: 23/60   00:25:01  708258kN
2...bxc5 3.f5 Ra3 4.f6+ exf6 5.g4 Ra1 6.Qxa1 Bxa1 7.a5 Bd4 8.g5 Qe2 9.R3f2 Bxf2
10.gxf6+ Kxf6 11.Rg1
  -+  (-#150)   Depth: 24/57   00:25:47  727688kN
2...bxc5 3.f5 Ra3 4.f6+ exf6 5.g4 Ra1 6.Qxa1 Bxa1 7.a5 Bd4 8.g5 Qe2 9.R3f2 Bxf2
10.gxf6+ Kxf6 11.Rg1
  -+  (-#150)   Depth: 25/34   00:25:49  728456kN
2...bxc5 3.f5 Ra3 4.f6+ exf6 5.g4 Ra1 6.Qxa1 Bxa1 7.a5 Bd4 8.g5 Qe2 9.R3f2 Bxf2
10.gxf6+ Kxf6 11.Rg1
  -+  (-#150)   Depth: 26/36   00:25:52  729302kN

(,  04.02.2006)
Noe here Shredder stalls.. It's NOT a BUG! (despite what some programmers might
say)
The Hash Tables are filled up, so let's make a move & response.
New game,
[D]8/4p1k1/4p1p1/2p5/P2bqPP1/4rR1p/7P/3Q1R1K b - - 0 1

Analysis by Shredder 8:

3...Rxf3 4.Rxf3 Qxf4 5.Rxf4
  +-  (2.11)   Depth: 1/4   00:00:00
3...Re2
  +-  (1.64)   Depth: 1/4   00:00:00
3...Re2
  +-  (1.64)   Depth: 1/4   00:00:00
3...Ra3 4.a5 Ra1 5.Qxa1 Bxa1 6.f5 Bd4 7.a6 Qxg4
  -+  (-#150)   Depth: 1/4   00:00:00
3...Ra3 4.a5 Ra1 5.Qxa1 Bxa1 6.f5 Bd4 7.a6 Qxg4
  -+  (-#150)   Depth: 1/9   00:00:00
3...Ra3 4.a5 Ra1 5.Qxa1 Bxa1 6.f5 Bd4 7.a6 Qxg4
  -+  (-#150)   Depth: 2/2   00:00:00
3...Ra3 4.a5 Ra1 5.Qxa1 Bxa1 6.f5 Bd4 7.a6 Qxg4
  -+  (-#150)   Depth: 3/3   00:00:00
3...Ra3 4.a5 Ra1 5.Qxa1 Bxa1 6.f5 Bd4 7.a6 Qxg4
  -+  (-#150)   Depth: 4/4   00:00:00
3...Ra3 4.a5 Ra1 5.Qxa1 Bxa1 6.f5 Bd4 7.a6 Qxg4
  -+  (-#150)   Depth: 5/5   00:00:00
3...Ra3 4.a5 Ra1 5.Qxa1 Bxa1 6.f5 Bd4 7.a6 Qxg4
  -+  (-#150)   Depth: 6/6   00:00:00
3...Ra3 4.a5 Ra1 5.Qxa1 Bxa1 6.f5 Bd4 7.a6 Qxg4
  -+  (-#150)   Depth: 7/7   00:00:00
3...Ra3 4.a5 Ra1 5.Qxa1 Bxa1 6.f5 Bd4 7.a6 Qxg4
  -+  (-#150)   Depth: 8/8   00:00:00
3...Ra3 4.a5 Ra1 5.Qxa1 Bxa1 6.f5 Bd4 7.a6 Qxg4
  -+  (-#150)   Depth: 9/9   00:00:00
3...Ra3 4.a5 Ra1 5.Qxa1 Bxa1 6.f5 Bd4 7.a6 Qxg4
  -+  (-#150)   Depth: 10/10   00:00:00
3...Ra3 4.a5 Ra1 5.Qxa1 Bxa1 6.f5 Bd4 7.a6 Qxg4
  -+  (-#150)   Depth: 11/11   00:00:03
3...Ra3 4.a5 Ra1 5.Qxa1 Bxa1 6.f5 Bd4 7.a6 Qxg4
  -+  (-#150)   Depth: 12/12   00:00:04  1kN
3...Ra3 4.a5 Ra1 5.Qxa1 Bxa1 6.f5 Bd4 7.a6 Qxg4
  -+  (-#150)   Depth: 13/13   00:00:05  1kN
3...Ra3 4.a5 Ra1 5.Qxa1 Bxa1 6.f5 Bd4 7.a6 Qxg4
  -+  (-#150)   Depth: 14/14   00:00:05  2kN
3...Ra3 4.a5 Ra1 5.Qxa1 Bxa1 6.f5 Bd4 7.a6 Qxg4
  -+  (-#150)   Depth: 15/15   00:00:05  4kN
3...Ra3 4.a5 Ra1 5.Qxa1 Bxa1 6.f5 Bd4 7.a6 Qxg4
  -+  (-#150)   Depth: 16/16   00:00:05  6kN
3...Ra3 4.f5 Ra1 5.Qxa1 Bxa1 6.f6+ exf6 7.a5 Bd4 8.a6 Qe2 9.Rxh3 Qxf1#
  -+  (-#151)   Depth: 17/46   00:01:17  27282kN

(,  04.02.2006)


Lets take it farther:
New game,
[D]8/4p1k1/4p1p1/P1p5/3bqPP1/r4R1p/7P/3Q1R1K b - - 0 1

Analysis by Shredder 8:

4...Qxf3+ 5.Rxf3 Rxf3
  +-  (2.70)   Depth: 1/3   00:00:00
4...Qxf3+ 5.Rxf3 Rxa5
  +-  (4.09)   Depth: 1/4   00:00:00
4...Qxf3+ 5.Rxf3 Rxa5 6.Rxh3
  +-  (6.43)   Depth: 1/4   00:00:00
4...Rxf3 5.Rxf3 Qb1 6.Qxb1 Be3
  +-  (1.96)   Depth: 1/4   00:00:00
4...Rxf3 5.Rxf3 Qb1 6.Qxb1 Be3
  +-  (1.96)   Depth: 1/5   00:00:00
4...Rxa5
  ±  (0.91)   Depth: 1/5   00:00:00
4...Ra1 5.Qxa1 Bxa1 6.g5 Bd4 7.Rc1 Qxf3#
  -+  (-6.83)   Depth: 6/7   00:00:00
4...Ra1 5.Qxa1 Bxa1 6.g5 Bd4 7.Rc1 Qxf3#
  -+  (-6.83)   Depth: 6/7   00:00:00
4...Ra1 5.Qxa1 Bxa1 6.g5 Bd4 7.Rc1 Qxf3#
  -+  (-6.83)   Depth: 6/7   00:00:00
4...Ra1 5.Qxa1 Bxa1 6.g5 Bd4 7.Rc1 Qxf3#
  -+  (-6.83)   Depth: 6/7   00:00:00
4...Ra1 5.Qxa1 Bxa1 6.g5 Bd4 7.Rc1 Qxf3#
  -+  (-6.83)   Depth: 6/7   00:00:00
4...Ra1 5.Qxa1 Bxa1 6.g5 Bd4 7.Rc1 Qxf3#
  -+  (-6.83)   Depth: 6/7   00:00:00
4...Ra1 5.Qxa1 Bxa1 6.g5 Bd4 7.Rc1 Qxf3#
  -+  (-6.83)   Depth: 6/7   00:00:00
4...Ra1 5.Qxa1 Bxa1 6.g5 Bd4 7.Rc1 Qxf3#
  -+  (-6.83)   Depth: 6/7   00:00:00
4...Ra1 5.Qxa1 Bxa1 6.g5 Bd4 7.Rc1 Qxf3#
  -+  (-6.83)   Depth: 6/7   00:00:00
4...Ra1 5.Qxa1 Bxa1 6.g5 Bd4 7.Rc1 Qxf3#
  -+  (-6.83)   Depth: 6/7   00:00:00
4...Ra1 5.Qxa1 Bxa1 6.g5 Bd4 7.Rc1 Qxf3#
  -+  (-6.83)   Depth: 6/7   00:00:00
4...Ra1 5.Qxa1 Bxa1 6.g5 Bd4 7.Rc1 Qxf3#
  -+  (-6.83)   Depth: 6/7   00:00:00
4...Ra1 5.Qxa1 Bxa1 6.g5 Bd4 7.Rc1 Qxf3#
  -+  (-6.83)   Depth: 6/7   00:00:00
4...Ra1 5.Qxa1 Bxa1 6.a6 Qe2 7.R1f2 Qxa6 8.Rxh3 Bd4 9.Kg2 Bxf2 10.Kxf2 Qa1
  -+  (-7.19)   Depth: 8/8   00:00:00
4...Ra1 5.Qxa1 Bxa1 6.a6 Qe2 7.R1f2 Qxa6 8.Rxh3 Bd4 9.Kg2 Bxf2 10.Kxf2 Qa1
  -+  (-7.19)   Depth: 8/8   00:00:00  14kN
4...Ra1 5.Qxa1 Bxa1 6.a6 Qe2 7.R1f2 Qxa6 8.Rxh3 Bd4 9.Kg2 Bxf2 10.Kxf2 Qa1
  -+  (-7.19)   Depth: 8/8   00:00:00  14kN
4...Ra1 5.Qxa1 Bxa1 6.a6 Qe2 7.R1f2 Qxa6 8.Rxh3 Bd4 9.Kg2 Qa1 10.Rf1 Kg8 11.Rxa1
  -+  (-6.94)   Depth: 8/18   00:00:00  22kN
4...Ra1 5.Qxa1 Bxa1 6.a6 Qe2 7.R1f2 Qxa6 8.Rxh3 Bd4 9.Kg2 e5 10.fxe5 Bxf2
11.Kxf2
  -+  (-6.90)   Depth: 8/18   00:00:00  31kN
4...Ra1 5.Qxa1 Bxa1 6.a6 Qe2 7.R1f2 Qxa6 8.Rxh3 Bd4 9.Kg2 e5 10.fxe5 Bxf2 11.Rb3
c4 12.Kxf2 cxb3
  -+  (-7.15)   Depth: 9/17   00:00:03  39kN
4...Ra1 5.Qxa1 Bxa1 6.a6 Bd4 7.g5 Qe2 8.R1f2 Bxf2 9.Rxh3 Qxa6 10.Rf3
  -+  (-7.65)   Depth: 9/28   00:00:04  73kN
4...Ra1 5.Qxa1 Bxa1 6.a6 Bd4 7.a7 Qe2 8.R1f2 Bxf2 9.Rxf2 Qd1+ 10.Rf1 Qxf1#
  -+  (-#150)   Depth: 9/28   00:00:04  89kN
4...Ra1 5.Qxa1 Bxa1 6.f5
  -+  (-#148)   Depth: 16/16   00:00:06  233kN
4...Ra1 5.Qxa1 Bxa1 6.f5
  -+  (-#148)   Depth: 16/16   00:00:06  233kN
4...Ra1 5.Qxa1 Bxa1 6.f5
  -+  (-#148)   Depth: 16/16   00:00:06  233kN
4...Ra1 5.Qxa1 Bxa1 6.f5
  -+  (-#148)   Depth: 16/16   00:00:06  233kN
4...Ra1 5.Qxa1 Bxa1 6.f5
  -+  (-#148)   Depth: 16/16   00:00:06  233kN
4...Ra1 5.Qxa1 Bxa1 6.f5
  -+  (-#148)   Depth: 16/16   00:00:06  233kN
4...Ra1 5.Qxa1 Bxa1 6.f5 Bd4 7.f6+ exf6 8.R1f2 Bxf2 9.g5 Qxf3#
  -+  (-#9)   Depth: 16/45   00:00:39  11508kN


(,  04.02.2006)







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

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