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Subject: Shredder 9 Blunders with 31.Rc1, Why?

Author: K. Burcham

Date: 20:26:58 10/17/05

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Dann misunderstood white lost.

I do not understand why Shredder plays 31.Rc1 in your game.
Here is your log 31. Rc1 {+1.80/14 43s}.

Here is mine:
(Chessbase) 31.Rc1 (-3.27)   Depth: 13/40   00:00:28
(Classic)   31.Rc1  -3.27           13/43       0:36

After 31.Rc1
       31...Rxg3   (-5.03)   Depth: 16/47    00:01:58

Here is Fruit 2.2
31.Rc1              (-3.05)   Depth: 13/39   00:00:34

What is your hardware?




Before 31.Rc1

 [D] 3q2k1/Q4pp1/5n1p/3P4/6n1/P1N1r1B1/1r4PP/3R1R1K w - - 0 1

Shredder 9.1 UCI:

31.Qd4 Rc2
  ±  (1.03)   Depth: 12/34   00:00:08  3534kN
31.Rc1
  ±  (1.04)   Depth: 12/34   00:00:08  4134kN
31.Rc1
  ±  (1.39)   Depth: 12/34   00:00:08  4742kN
31.Rc1 Rxg3
  ±  (1.39)   Depth: 12/34   00:00:11  6259kN
31.Rc1 Rxg3
  ±  (1.14)   Depth: 13/36   00:00:13  7494kN
31.Rc1 Rxg3
  ²  (0.64)   Depth: 13/36   00:00:14  8019kN
31.Rc1 Rxg3 32.hxg3 Qd6 33.Ne4 Qxd5 34.Qc5 Qxe4 35.Qc8+ Ne8 36.Qc6 Qe5 37.Rc5
Qe3 38.a4 Nf2+ 39.Kh2 Ra2 40.Qd5 Ra3
  -+  (-3.27)   Depth: 13/40   00:00:28  16568kN
31.Rf3
  -+  (-3.26)   Depth: 13/40   00:00:29  16941kN
31.Rf3
  -+  (-2.91)   Depth: 13/40   00:00:29  17147kN
31.Rf3 Rxf3 32.gxf3 Qc8 33.Qd4 Rc2 34.Nb1
  ±  (1.02)   Depth: 13/40   00:00:34  19728kN
31.Qd4
  ±  (1.03)   Depth: 13/40   00:00:35  20474kN
31.Qd4 Rc2 32.Rd3 Qa5 33.Rxe3 Nxe3 34.Qxe3 Rxc3 35.Qe5 Qb5 36.Rd1 Rxa3 37.Bh4
Qa4 38.Qb8+ Ne8 39.Re1 Ra1
  ±  (1.06)   Depth: 13/40   00:00:37  21298kN
31.Qd4 Rc2 32.Rd3 Qa5 33.Rxe3 Nxe3 34.Qxe3 Rxc3 35.Qe5 Qb5 36.Re1 Rxa3 37.d6
Qxe5 38.Bxe5 Nd7 39.Bb2 Rd3
  ±  (1.04)   Depth: 14/40   00:00:44  25230kN
31.Qd4 Rc2 32.Rd3 Qa5 33.Rxe3 Nxe3 34.Qxe3 Rxc3 35.Qe1 Rxa3 36.d6 Qd5 37.Rxf6
  ±  (0.81)   Depth: 15/40   00:01:05  36729kN
31.Qd4 Rc2 32.Rd3 Qa5 33.Rxe3 Nxe3 34.Qxe3 Rxc3 35.Qe5 Rxa3 36.Qb8+ Kh7 37.Qb1+
Kh8 38.Be5
  ±  (1.00)   Depth: 16/40   00:01:49  60997kN
31.Qd4 Rc2 32.Rd3 Qa5 33.Rxe3 Nxe3 34.Qxe3 Rxc3 35.Qe5 Qxa3 36.d6 Re3 37.Qb5 Qd3
38.Qxd3 Rxd3 39.Rb1
  ±  (0.77)   Depth: 17/41   00:02:58  98200kN
31.Qd4 Rc2 32.Rd3 Qa5 33.Rxe3 Nxe3 34.Qxe3 Rxc3 35.Qe5 Qxa3 36.d6 Qa6 37.Rb1 Qd3
38.Qe1 Rc8 39.Rd1 Qf5 40.Qf2 Qxf2 41.Bxf2 Nd7
  ±  (0.77)   Depth: 18/43   00:05:27  179219kN


Shredder 9 Classic

 10/30	 0:01 	+1.75 	31.Rf3 Rxf3 32.gxf3 Rc2 33.Rd3 Rc1+ 34.Kg2 Qc8 35.fxg4 Rxc3
36.Rxc3 Qxc3 37.Qb8+ Kh7 38.Qb7 (880.008) 592
 11/29	 0:02 	+1.50--	31.Rf3 Rxf3 (1.286.177) 583
 11/29	 0:02 	+1.49 	31.Rf3 Rxf3 32.gxf3 Rc2 33.Rd3 Qc8 34.Nd1 Qf5 35.Qb8+
(1.515.651) 591
 12/33	 0:06 	+1.24--	31.Rf3 Rxf3 (3.963.569) 567
 12/33	 0:08 	+0.98 	31.Rf3 Rxf3 32.gxf3 Qc8 33.Qd4 Nxh2 34.Ne4 Nxe4 35.Qxb2
Nxf3 36.Bh2 Nxh2 37.Qxh2 Qd7 (4.718.048) 572
 12/33	 0:09 	+0.99++	31.Rc1 (5.225.585) 572
 12/33	 0:09 	+1.34++	31.Rc1 (5.496.426) 573
 12/33	 0:14 	+1.71 	31.Rc1 Rd3 32.Rf3 Rbd2 33.Kg1 Nd7 34.Rxd3 Rxd3 35.Qc7
(8.442.923) 565
 13/39	 0:22 	+1.46--	31.Rc1 Rd3 (12.546.622) 567
 13/39	 0:23 	+0.96--	31.Rc1 Rd3 (13.150.888) 568
 13/43	 0:36 	-3.27 	31.Rc1 Rxg3 32.hxg3 Qd6 33.Ne4 Qxd5 34.Qc5 Qxe4 35.Qc8+ Ne8
36.Qc6 Qe5 37.Rc5 Nf2+ 38.Kh2 (21.405.244) 582
 13/43	 0:37 	-3.26++	31.Rf3 (21.706.495) 582
 13/43	 0:37 	-2.91++	31.Rf3 (21.876.394) 583
 13/43	 0:48 	+0.30 	31.Rf3 Rxf3 32.gxf3 Qc8 33.Qd4 Qf5 34.Qd3 Rxh2+ 35.Kg1 Qh5
36.fxg4 Rh1+ 37.Kg2 Qh3+ 38.Kf3 Qxg4+ 39.Kf2 Rxd1 40.Nxd1 Ne4+ 41.Kg1 Nxg3
(27.898.977) 579
 13/43	 0:49 	+0.31++	31.Qd4 (28.649.319) 579
 13/43	 0:51 	+0.66++	31.Qd4 (29.560.030) 579
 13/43	 0:55 	+0.99 	31.Qd4 Rc2 32.Rd3 Qa5 33.Rxe3 Nxe3 34.Qxe3 Rxc3 35.Qe5 Rxa3
36.Qb8+ Kh7 37.d6 Ra1 38.Rb1 Qa7 39.Qxa7 (31.946.071) 574
 14/29	 1:05 	+0.81 	31.Qd4 Rc2 32.Rd3 Qa5 33.Rxe3 Nxe3 34.Qxe3 Rxc3 35.Qe5 Rxa3
36.d6 Qxe5 (36.987.719) 568
 14/38	 1:10 	+0.82++	31.Rf3 (40.153.303) 568
 14/41	 1:15 	+0.87 	31.Rf3 Rxf3 32.gxf3 Qc8 33.Qd4 Nxh2 34.Ne4 Nxe4 35.Qxb2
Nxf3 36.Qb8 Qxb8 37.Bxb8 Nf2+ 38.Kg2 Nxd1 39.Kxf3 Kf8 40.a4 Ke7 41.a5 Nc3
(43.261.130) 571
 15/38	 1:32 	+0.62--	31.Rf3 Rxf3 (52.780.060) 567
 15/42	 1:37 	+0.12--	31.Rf3 Rxf3 (55.627.081) 569
 15/44	 1:56 	+0.09 	31.Rf3 Rxf3 32.gxf3 Qc8 33.fxg4 Qxc3 34.Qa8+ Kh7 35.d6 Re2
36.Rf1 Nxg4 37.Qb7 Qd2 38.Qb1+ Kg8 39.Qb8+ Kh7 (67.214.172) 576
 15/44	 2:02 	+0.10++	31.Qd4 (70.711.396) 576
 15/44	 2:04 	+0.45++	31.Qd4 (71.704.303) 578
 15/44	 2:10 	+0.98 	31.Qd4 Rc2 32.Rd3 Qa5 33.Rxe3 Nxe3 34.Qxe3 Rxc3 35.Qe5 Qb5
36.Re1 (75.228.890) 578
 16/34	 2:41 	+1.00 	31.Qd4 Rc2 32.Rd3 Qa5 33.Rxe3 Nxe3 34.Qxe3 Rxc3 35.Qe5 Rxa3
36.Qb8+ Kh7 37.Qb1+ Kh8 38.Be5 Qxd5 39.Bxf6 gxf6 40.Qb2 (92.278.442) 572
 17/40	 3:59 	+0.76 	31.Qd4 Rc2 32.Rd3 Qa5 33.Rxe3 Nxe3 34.Qxe3 Rxc3 35.Qe5 Qxa3
36.d6 Rc2 37.Qf5 Rc1 38.Be5 Qc5 (135.486.226) 565




After 31.Rc1  -5.03
 [D] 3q2k1/Q4pp1/5n1p/3P4/6n1/P1N1r1B1/1r4PP/2R2R1K b - - 0 1

Shredder 9.1 UCI:


31...Rxg3 32.hxg3 Qd6 33.Ne4 Qxd5 34.Qc5 Qxe4 35.Qc8+ Ne8 36.Qc6 Qe5 37.Rc5 Qe3
38.a4 Nf2+
  -+  (-3.27)   Depth: 10/34   00:00:03  673kN
31...Rxg3 32.hxg3 Qd6 33.Ne4 Qxd5 34.Qc5 Qxe4 35.Qc8+ Ne8 36.Qc6 Qe5 37.Rc5 Qe3
38.a4 Nf2+
  -+  (-3.27)   Depth: 11/34   00:00:04  1063kN
31...Rxg3 32.hxg3 Qd6 33.Ne4 Qxd5 34.Qc5 Qxe4 35.Qc6 Qxc6
  -+  (-3.51)   Depth: 12/37   00:00:06  2190kN
31...Rxg3 32.hxg3 Qd6 33.Ne4 Qxd5 34.Qc5 Qxe4 35.Qc8+ Kh7 36.Qf5+ Qxf5 37.Rxf5
Kg6 38.Rf3 Ne5 39.Re3
  -+  (-3.28)   Depth: 13/40   00:00:08  4634kN
31...Rxg3 32.hxg3
  -+  (-3.53)   Depth: 14/41   00:00:14  8726kN
31...Rxg3 32.hxg3
  -+  (-4.03)   Depth: 14/41   00:00:22  13439kN
31...Rxg3 32.hxg3 Qd6 33.Ne4 Qxd5 34.Qc5 Qxe4 35.Qc6
  -+  (-4.03)   Depth: 14/41   00:00:33  20450kN
31...Rxg3 32.hxg3
  -+  (-4.28)   Depth: 15/44   00:00:46  28649kN
31...Rxg3 32.hxg3 Qd6 33.Ne4 Qxd5 34.Qc5 Qxe4 35.Qc6 Qxc6 36.Rxc6 Ne4 37.Re1
Nxg3+ 38.Kg1 Ne2+ 39.Kh1 Nf4 40.Rc4 Nf2+ 41.Kh2 N2h3 42.Re8+ Kh7 43.Kg3 Rxg2+
44.Kf3
  -+  (-4.37)   Depth: 15/45   00:00:57  35902kN
31...Rxg3 32.hxg3
  -+  (-4.62)   Depth: 16/47   00:01:28  54548kN
31...Rxg3 32.hxg3 Qd6 33.Ne4 Qxd5 34.Qc5 Qxe4 35.Qc6 Qe3 36.Qa8+ Kh7 37.Qf3 Nf2+
38.Kg1 Qxf3 39.gxf3 Nh3+ 40.Kh1 Nh5 41.Rg1 Nxg1 42.Rxg1 Kg6 43.a4 Ra2 44.Rg2
  -+  (-5.03)   Depth: 16/47   00:01:58  74130kN



 [D] 3q2k1/Q4pp1/5n1p/3P4/6n1/P1N1r1B1/1r4PP/3R1R1K w - - 0 1

Fruit 2.2:


31.Rc1 Rb3 32.Qc5 Qa8 33.a4 Qa6 34.Rfe1 Rxe1+ 35.Rxe1 Qd3 36.Rc1 Rb2 37.Qc8+ Kh7
  ±  (0.73)   Depth: 11/31   00:00:10  7368kN
31.Rc1 Rb3 32.Qc5 Qa8 33.a4 Qa6 34.Rfe1 Rxe1+ 35.Rxe1 Qd3 36.Rc1 Qd2 37.Qc8+ Kh7
38.Qf5+ Kg8
  ±  (0.71)   Depth: 12/31   00:00:15  10921kN
31.Rc1 Rxg3 32.hxg3 Qd6 33.Ne4 Qxd5 34.Qc5 Qxe4 35.Qc8+ Kh7 36.Qf5+ Qxf5 37.Rxf5
Ne4 38.Rf3 Ne5 39.Re3
  -+  (-3.05)   Depth: 13/39   00:00:34  26357kN
31.Qd4 Rc2 32.Rd3 Qa5 33.Rxe3 Nxe3 34.Qxe3 Rxc3 35.Qe5 Qb5 36.Re1 Nxd5 37.a4 Qc5
38.Qe8+ Qf8
  =  (-0.12)   Depth: 13/39   00:00:41  31546kN
31.Qd4 Rc2 32.Rd3 Qa5 33.Rxe3 Nxe3 34.Qxe3 Rxc3 35.Qe5 Qb5 36.Re1 Nxd5 37.a4 Qc6
38.Qe8+ Qxe8 39.Rxe8+ Kh7 40.a5 Rc1+ 41.Re1
  =  (0.01)   Depth: 14/39   00:01:05  49806kN
31.Qd4 Rc2 32.Rd3 Qa5 33.Rxe3 Nxe3 34.Qxe3 Rxc3 35.Qe1 Qxa3 36.Qf2 Rc1 37.d6 Qb2
38.Rxc1 Qxc1+ 39.Qe1 Qc2
  =  (0.02)   Depth: 15/42   00:01:37  75105kN
31.Qd4 Rc2 32.Rd3 Qa5 33.Rxe3 Nxe3 34.Qxe3 Rxc3 35.Qe1 Rxa3 36.d6 Qd5 37.Qe5 Qa8
38.Bh4 Ra5 39.Qb2 Ra2
  =  (0.22)   Depth: 16/42   00:02:52  134761kN
31.Qd4 Rc2 32.Rd3 Qa5 33.Rxe3 Nxe3 34.Qxe3 Rxc3 35.Qe1 Rxa3 36.d6 Qd5 37.Qe5 Qc6
38.Qb2 Ra8 39.Rc1 Qd5 40.Be5
  =  (0.07)   Depth: 17/42   00:04:18  204811kN






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