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Subject: Re: For the Record .. Deeper search & Eval Mate in 14

Author: chandler yergin

Date: 14:03:08 12/03/05

Go up one level in this thread

On December 03, 2005 at 16:53:14, Richard Heldmann wrote:

>
>[D]3Q4/bp3pp1/6k1/8/7R/6p1/B2p1PP1/q1rn2K1 w - -
>
>Engine: Shredder 8 (128 MB)
>by Stefan Meyer-Kahlen
>
>1/05   0:00   -6.24--  1.Qxd2 Nxf2+ 2.Qe1 Rxe1+ (38) 2
>
>1/05   0:00   -16.91-- 1.Qxd2 Nxf2+ 2.Qd1 Nxd1+ 3.Rd4 (46) 3
>
>1/05   0:00   -16.91   1.Qxd2 Nxf2+ 2.Qd1 Nxd1+ 3.Rd4 (47) 3
>
>1/05   0:00   -12.13++ 1.Qh8 gxf2+ 2.Kf1 Qxa2 (53) 3
>
>1/05   0:00   -10.84++ 1.Qh8 gxf2+ 2.Kh2 f1Q (1.566) 50
>
>1/05   0:00   -10.84   1.Qh8 gxf2+ 2.Kh2 f1Q (1.572) 50
>
>1/05   0:00   -8.59++  1.Qd5 (11.045) 235
>
>1/05   0:00   -8.59    1.Qd5 (11.055) 235
>
>1/05   0:00   -8.46++  1.Bc4 (16.402) 210
>
>1/05   0:00   -8.46    1.Bc4 (16.416) 210
>
>1/05   0:00   -8.41++  1.Bd5 (16.419) 210
>
>1/05   0:00   -7.78++  1.Bd5 (24.328) 258
>
>1/05   0:00   -7.78    1.Bd5 (24.335) 258
>
>1/05   0:00   -5.79++  1.Qd3+ f5 2.Qxf5+ Kxf5 3.Be6+ Kxe6 (24.339) 258
>
>1/07   0:00   -4.59++  1.Qd3+ f5 2.Qxf5+ Kxf5 3.Be6+ Kxe6 (31.441) 251
>
>1/07   0:00   -4.59    1.Qd3+ f5 2.Qxf5+ Kxf5 3.Be6+ Kxe6 (31.451) 251
>
>1/07   0:00   +2.00++  1.Qd6+ Qf6 2.Qxg3+ Qg5 3.Qd6+ Qf6
>                       4.Qd3+ Qf5 5.Rg4+ Kf6 6.Qd8+ Ke5
>                       7.Qe7+ Qe6 8.Bxe6 Bxf2+ 9.Kf1 fxe6
>                       10.Qxg7+ Kd6 11.Qxb7 (41.004) 292
>
>1/21   0:00   +2.27    1.Qd6+ Qf6 2.Qxg3+ Qg5 3.Qd6+ Qf6
>                       4.Qd3+ Qf5 5.Rg4+ Kf6 6.Qd8+ Ke5
>                       7.Qe7+ Qe6 8.Bxe6 Bxf2+ 9.Kf1 fxe6
>                       10.Qxg7+ Kd6 11.Qxb7 (41.038) 293
>
>2/03   0:00   +2.27    1.Qd6+ Qf6 2.Qxg3+ Qg5 3.Qd6+ Qf6
>                       4.Qd3+ Qf5 5.Rg4+ Kf6 6.Qd8+ Ke5
>                       7.Qe7+ Qe6 8.Bxe6 Bxf2+ 9.Kf1 fxe6
>                       10.Qxg7+ Kd6 11.Qxb7 (61.118) 301
>
>3/03   0:00   +2.27    1.Qd6+ Qf6 2.Qxg3+ Qg5 3.Qd6+ Qf6
>                       4.Qd3+ Qf5 5.Rg4+ Kf6 6.Qd8+ Ke5
>                       7.Qe7+ Qe6 8.Bxe6 Bxf2+ 9.Kf1 fxe6
>                       10.Qxg7+ Kd6 11.Qxb7 (70.437) 321
>
>4/04   0:00   +2.27    1.Qd6+ Qf6 2.Qxg3+ Qg5 3.Qd6+ Qf6
>                       4.Qd3+ Qf5 5.Rg4+ Kf6 6.Qd8+ Ke5
>                       7.Qe7+ Qe6 8.Bxe6 Bxf2+ 9.Kf1 fxe6
>                       10.Qxg7+ Kd6 11.Qxb7 (80.784) 323
>
>5/05   0:00   +2.27    1.Qd6+ Qf6 2.Qxg3+ Qg5 3.Qd6+ Qf6
>                       4.Qd3+ Qf5 5.Rg4+ Kf6 6.Qd8+ Ke5
>                       7.Qe7+ Qe6 8.Bxe6 Bxf2+ 9.Kf1 fxe6
>                       10.Qxg7+ Kd6 11.Qxb7 (80.863) 323
>
>6/06   0:00   +2.27    1.Qd6+ Qf6 2.Qxg3+ Qg5 3.Qd6+ Qf6
>                       4.Qd3+ Qf5 5.Rg4+ Kf6 6.Qd8+ Ke5
>                       7.Qe7+ Qe6 8.Bxe6 Bxf2+ 9.Kf1 fxe6
>                       10.Qxg7+ Kd6 11.Qxb7 (91.129) 306
>
>7/07   0:00   +2.27    1.Qd6+ Qf6 2.Qxg3+ Qg5 3.Qd6+ Qf6
>                       4.Qd3+ Qf5 5.Rg4+ Kf6 6.Qd8+ Ke5
>                       7.Qe7+ Qe6 8.Bxe6 Bxf2+ 9.Kf1 fxe6
>                       10.Qxg7+ Kd6 11.Qxb7 (104.848) 319
>
>8/08   0:00   +2.27    1.Qd6+ Qf6 2.Qxg3+ Qg5 3.Qd6+ Qf6
>                       4.Qd3+ Qf5 5.Rg4+ Kf6 6.Qd8+ Ke5
>                       7.Qe7+ Qe6 8.Bxe6 Bxf2+ 9.Kf1 fxe6
>                       10.Qxg7+ Kd6 11.Qxb7 (104.909) 319
>
>9/09   0:00   +2.27    1.Qd6+ Qf6 2.Qxg3+ Qg5 3.Qd6+ Qf6
>                       4.Qd3+ Qf5 5.Rg4+ Kf6 6.Qd8+ Ke5
>                       7.Qe7+ Qe6 8.Bxe6 Bxf2+ 9.Kf1 fxe6
>                       10.Qxg7+ Kd6 11.Qxb7 (125.618) 309
>
>10/10  0:01   +2.27    1.Qd6+ Qf6 2.Qxg3+ Qg5 3.Qd6+ Qf6
>                       4.Qd3+ Qf5 5.Rg4+ Kf6 6.Qd8+ Ke5
>                       7.Qe7+ Qe6 8.Bxe6 Bxf2+ 9.Kf1 fxe6
>                       10.Qxg7+ Kd6 11.Qxb7 (747.237) 543
>
>11/38  0:04   +2.02--  1.Qd6+ Qf6 2.Qxg3+ Qg5 3.Qd6+ Qf6
>                       4.Qd3+ Qf5 5.Rg4+ Kh6 6.Qxd2+ Ne3+
>                       7.Kh2 (2.486.792) 612
>
>11/38  0:04   +1.52--  1.Qd6+ Qf6 2.Qxg3+ Qg5 3.Qd6+ Qf6
>                       4.Qd3+ Qf5 5.Rg4+ Kh6 6.Qxd2+ Ne3+
>                       7.Kh2 Qxg4 8.Qxe3+ Bxe3 (2.895.896) 621
>
>11/38  0:06   +0.06    1.Qd6+ Qf6 2.Qxg3+ Qg5 3.Qd6+ Qf6
>                       4.Qd3+ Qf5 5.Rg4+ Kh6 6.Rh4+ Kg6
>                       7.Rg4+ Kh6 8.Rh4+ Kg6 9.Rg4+ (4.196.487) 634
>
>11/39  0:10   +0.07++  1.Bxf7+ Kxf7 2.Qd5+ Kf8 3.Qd6+ Kf7
>                       4.Qd5+ Kf8 5.Qd6+ Kf7 6.Qd5+ Kf8 (6.751.596) 658
>
>11/40  0:11   +0.07    1.Bxf7+ Kxf7 2.Qd5+ Kf8 3.Qd6+ Kf7
>                       4.Rg4 (7.637.240) 659
>
>11/40  0:13   +0.08++  1.Qd3+ f5 2.Qxg3+ Kf6 3.Qd6+ Kg5
>                       4.Qf4+ Kf6 5.Rh6+ gxh6 6.Qd6+ Kg7
>                       7.Qg3+ Kf6 8.Qg7+ Kxg7 9.Bb3 (8.935.053) 661
>
>11/40  0:14   +0.08    1.Qd3+ f5 2.Qxg3+ Kf6 3.Qd6+ Kg5
>                       4.Qf4+ Kf6 5.Rh6+ gxh6 6.Qd6+ Kg5
>                       7.Qxh6+ Kxh6 8.Bb3 (9.655.398) 663
>
>12/39  0:22   +0.09    1.Qd3+ f5 2.Qxg3+ Kf6 3.Qd6+ Kg5
>                       4.Qf4+ Kf6 5.Rh6+ gxh6 6.Qd6+ Kg5
>                       7.Qxd2+ Ne3+ 8.Qxc1 Qxc1+ 9.Kh2 (14.742.140) 664
>
>12/39  0:25   +0.10++  1.Bxf7+ Kxf7 2.Qd5+ Kf8 3.Rh8+ Ke7
>                       4.Qd8+ Kf7 5.Rf8+ Kg6 6.Qd3+ Kh6
>                       7.Rh8+ Kg5 8.Qxg3+ Kf5 9.Qd3+ Ke6
>                       10.Re8+ Kf7 11.Qd7+ Kg6 12.Qg4+ Kf6
>                       13.Qf3+ Kg5 14.Qd5+ (16.814.954) 668
>
>12/40  0:28   +0.10    1.Bxf7+ Kxf7 2.Qd5+ Kf8 3.Rh8+ Ke7
>                       4.Qd8+ Kf7 5.Rf8+ Kg6 6.Qd3+ Kh6
>                       7.Rh8+ Kg5 8.Qxg3+ Kf5 9.Qd3+ Ke6
>                       10.Re8+ Kf7 11.Qd7+ Kf6 12.Qd6+ Kg5
>                       13.Qe5+ Qxe5 (18.745.849) 668
>
>13/45  0:51   +0.11    1.Bxf7+ Kxf7 2.Qd5+ Kf8 3.Rh8+ Ke7
>                       4.Qd8+ Kf7 5.Rf8+ Kg6 6.Qd3+ Kh6
>                       7.Rh8+ Kg5 8.Qxg3+ Kf5 9.Qd3+ Kf6
>                       10.Qd6+ Kg5 11.Qd5+ Kg6 12.Qd3+ Kf6
>                       13.Qd6+ Kg5 14.Qd5+ (34.435.694) 664
>
>13/46  0:58   +0.12++  1.Qd3+ f5 2.Qxg3+ Kf6 3.Qd6+ Kg5
>                       4.Rh5+ Kxh5 5.Bf7+ Kg5 6.Qg3+ Kf6
>                       7.Qg6+ Ke5 8.Qe6+ Kf4 9.g3+ Kg4
>                       10.Qe2+ Kg5 11.Qh5+ Kf6 12.Qg6+ Ke7
>                       13.Qe6+ Kd8 14.Qd6+ (39.174.799) 664
>
>13/46  0:58   +M150++  1.Qd3+ f5 2.Qxg3+ Kf6 3.Qd6+ Kg5
>                       4.Rh5+ Kxh5 5.Bf7+ Kg5 6.Qg3+ Kf6
>                       7.Qg6+ Ke5 8.Qe6+ Kf4 9.g3+ Kg4
>                       10.Qe2+ Kg5 11.Qh5+ Kf6 12.Qg6+ Ke7
>                       13.Qe6+ Kd8 14.Qd6+ (39.174.839) 664
>
>13/46  0:59   +M150    1.Qd3+ f5 2.Qxg3+ Kf6 3.Qd6+ Kg5
>                       4.Rh5+ Kxh5 5.Bf7+ Kg5 6.Qg3+ Kf6
>                       7.Qg6+ Ke5 8.Qe6+ Kf4 9.g3+ Kg4
>                       10.Qe2+ Kg5 11.Qh5+ Kf6 12.Qg6+ Ke7
>                       13.Qe6+ Kd8 14.Qd6+ (39.191.192) 664
>
>14/38  1:00   +M150    1.Qd3+ f5 2.Qxg3+ Kf6 3.Qd6+ Kg5
>                       4.Rh5+ Kxh5 5.Bf7+ Kg5 6.Qg3+ Kf6
>                       7.Qg6+ Ke5 8.Qe6+ Kf4 9.g3+ Kg4
>                       10.Qe2+ Kg5 11.Qh5+ Kf6 12.Qg6+ Ke5
>                       13.Qe6+ Kd4 14.Qd5+ (40.395.148) 663
>
>15/36  1:03   +M16     1.Qd3+ f5 2.Qxg3+ Kf6 3.Qd6+ Kg5
>                       4.Rh5+ Kxh5 5.Bf7+ Kg5 6.Qg3+ Kf6
>                       7.Qg6+ Ke5 8.Qe6+ Kf4 9.g3+ Kg4
>                       10.Qe2+ Kg5 11.Qh5+ Kf6 12.Qg6+ Ke5
>                       13.Qe6+ Kd4 14.Qd5+ (41.980.717) 661
>
>16/37  1:03   +M16     1.Qd3+ f5 2.Qxg3+ Kf6 3.Qd6+ Kg5
>                       4.Rh5+ Kxh5 5.Bf7+ Kg5 6.Qg3+ Kf6
>                       7.Qg6+ Ke5 8.Qe6+ Kf4 9.g3+ Kg4
>                       10.Qe2+ Kg5 11.Qh5+ Kf6 12.Qg6+ Ke5
>                       13.Qe6+ Kd4 14.Qd5+ (42.249.990) 661
>
>17/34  1:04   +M16     1.Qd3+ f5 2.Qxg3+ Kf6 3.Qd6+ Kg5
>                       4.Rh5+ Kxh5 5.Bf7+ Kg5 6.Qg3+ Kf6
>                       7.Qg6+ Ke5 8.Qe6+ Kf4 9.g3+ Kg4
>                       10.Qe2+ Kg5 11.Qh5+ Kf6 12.Qg6+ Ke5
>                       13.Qe6+ Kd4 14.Qd5+ (42.785.613) 660
>
>18/36  1:05   +M16     1.Qd3+ f5 2.Qxg3+ Kf6 3.Qd6+ Kg5
>                       4.Rh5+ Kxh5 5.Bf7+ Kg5 6.Qg3+ Kf6
>                       7.Qg6+ Ke5 8.Qe6+ Kf4 9.g3+ Kg4
>                       10.Qe2+ Kg5 11.Qh5+ Kf6 12.Qg6+ Ke5
>                       13.Qe6+ Kd4 14.Qd5+ (43.155.174) 659
>
>19/36  1:06   +M16     1.Qd3+ f5 2.Qxg3+ Kf6 3.Qd6+ Kg5
>                       4.Rh5+ Kxh5 5.Bf7+ Kg5 6.Qg3+ Kf6
>                       7.Qg6+ Ke5 8.Qe6+ Kf4 9.g3+ Kg4
>                       10.Qe2+ Kg5 11.Qh5+ Kf6 12.Qg6+ Ke5
>                       13.Qe6+ Kd4 14.Qd5+ (43.755.180) 658
>
>20/37  1:07   +M16     1.Qd3+ f5 2.Qxg3+ Kf6 3.Qd6+ Kg5
>                       4.Rh5+ Kxh5 5.Bf7+ Kg5 6.Qg3+ Kf6
>                       7.Qg6+ Ke5 8.Qe6+ Kf4 9.g3+ Kg4
>                       10.Qe2+ Kg5 11.Qh5+ Kf6 12.Qg6+ Ke5
>                       13.Qe6+ Kd4 14.Qd5+ (44.580.085) 656
>
>21/39  1:09   +M16     1.Qd3+ f5 2.Qxg3+ Kf6 3.Qd6+ Kg5
>                       4.Rh5+ Kxh5 5.Bf7+ Kg5 6.Qg3+ Kf6
>                       7.Qg6+ Ke5 8.Qe6+ Kf4 9.g3+ Kg4
>                       10.Qe2+ Kg5 11.Qh5+ Kf6 12.Qg6+ Ke5
>                       13.Qe6+ Kd4 14.Qd5+ (45.690.817) 654
>
>22/41  1:12   +M14     1.Qd3+ f5 2.Qxg3+ Kf6 3.Qd6+ Kg5
>                       4.Rh5+ Kxh5 5.Bf7+ Kg5 6.Qg3+ Kf6
>                       7.Qg6+ Ke5 8.Qe6+ Kf4 9.g3+ Kg4
>                       10.Qg6+ Kf3 11.Qxf5+ Ke2 12.Qb5+ Rc4
>                       13.Qxc4+ Kf3 14.Bh5+ (47.302.239) 652
>
>23/36  1:16   +M14     1.Qd3+ f5 2.Qxg3+ Kf6 3.Qd6+ Kg5
>                       4.Rh5+ Kxh5 5.Bf7+ Kg5 6.Qg3+ Kf6
>                       7.Qg6+ Ke5 8.Qe6+ Kf4 9.g3+ Kg4
>                       10.Qg6+ Kf3 11.Qxf5+ Ke2 12.Qb5+ Rc4
>                       13.Qxc4+ Kf3 14.Bh5+ (49.751.280) 649
>
>24/41  1:22   +M14     1.Qd3+ f5 2.Qxg3+ Kf6 3.Qd6+ Kg5
>                       4.Rh5+ Kxh5 5.Bf7+ Kg5 6.Qg3+ Kf6
>                       7.Qg6+ Ke5 8.Qe6+ Kf4 9.g3+ Kg4
>                       10.Qg6+ Kf3 11.Qxf5+ Ke2 12.Qb5+ Rc4
>                       13.Qxc4+ Kf3 14.Bh5+ (53.622.607) 646
>
>25/38  1:32   +M14     1.Qd3+ f5 2.Qxg3+ Kf6 3.Qd6+ Kg5
>                       4.Rh5+ Kxh5 5.Bf7+ Kg5 6.Qg3+ Kf6
>                       7.Qg6+ Ke5 8.Qe6+ Kf4 9.g3+ Kg4
>                       10.Qg6+ Kf3 11.Qxf5+ Ke2 12.Qb5+ Rc4
>                       13.Qxc4+ Kf3 14.Bh5+ (59.266.595) 642
>
>26/39  1:46   +M14     1.Qd3+ f5 2.Qxg3+ Kf6 3.Qd6+ Kg5
>                       4.Rh5+ Kxh5 5.Bf7+ Kg5 6.Qg3+ Kf6
>                       7.Qg6+ Ke5 8.Qe6+ Kf4 9.g3+ Kg4
>                       10.Qg6+ Kf3 11.Qxf5+ Ke2 12.Qb5+ Rc4
>                       13.Qxc4+ Kf3 14.Bh5+ (68.045.957) 639
>
>27/39  2:07   +M14     1.Qd3+ f5 2.Qxg3+ Kf6 3.Qd6+ Kg5
>                       4.Rh5+ Kxh5 5.Bf7+ Kg5 6.Qg3+ Kf6
>                       7.Qg6+ Ke5 8.Qe6+ Kf4 9.g3+ Kg4
>                       10.Qg6+ Kf3 11.Qxf5+ Ke2 12.Qb5+ Rc4
>                       13.Qxc4+ Kf3 14.Bh5+ (81.349.900) 639
>
>best move: Qd8-d3 time: 2:23.063 min  n/s: 638.691  CPU 196.9%   n/s(1CPU):
>324.373  nodes: 91.362.895
>
>
>Mate in 11?  Not my Shredder 8!
It found a Mate. Does this mean it was the best line? No, of course not.
As you can see with deeper search it reverted to Mate in 14.
How often do you see a PV Change with time?
This is no different.

• Re: For the Record .. Deeper search & Eval Mate in 14 Roger Brown 15:53:20 12/03/05
  • Re: For the Record .. Deeper search & Eval Mate in 14 chandler yergin 21:07:03 12/03/05
    • Re: For the Record .. Deeper search & Eval Mate in 14 Roger Brown 03:31:51 12/04/05

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