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Subject: Re: Experimentation with move ordering

Author: William Bryant

Date: 15:55:33 11/28/00

Go up one level in this thread


On November 28, 2000 at 14:30:28, Robert Hyatt wrote:

>On November 28, 2000 at 14:17:41, Will Singleton wrote:
>
>>I ran it out to 9 ply for my program and Macchess.  Move ordering is similiar to
>>the usual, but I'm using PVS.  My searches do tend to blow up in the higher
>>plys, for some unknown reason.  I'm going to try negascout just to see what
>>happens.
>>
>>From this position:
>>
>>rnbqkbnr/ppp2ppp/8/3pp3/3PP3/8/PPP2PPP/RNBQKBNR w KQkq -
>>
>>Amateur
>>ply   score     time     nodes      n/s    pv
>>
>>  3      90     0.08      3332    24960  Pxe5 Pxe4 Qxd8 Kxd8
>>  4      90     0.17      8256    29100  Pxe5 Pxe4 Qxd8 Kxd8
>>  5     125     0.33     20785    37740  Pxe5 Pxe4 Qxd8 Kxd8 Be3
>>  6     118     1.20     66639    49920  Pxe5 Be6 Bb5 c6 Pxd5 Bxd5 Bf1
>>  7      95     3.48    218850    57540  Pxe5 Pxe4 Qxd8 Kxd8 Bg5 f6 Pxf6 Nxf6
>>  8     128     9.00    555919    61740  Pxe5 Pxe4 Qxd8 Kxd8 Bc4 Nc6 Bf4
>>  9     110    42.00   2739007    65160  Pxe5 Be6 Qd3 Nc6 Qb5 Rb8 Nc3 Ne7 Nxd5
>>Nxd5 Pxd5
>>
>>MacChess 4
>>02/01|00:00:00|       296|  +22| dxe5 dxe4 Qxd8+ Kxd8 Bc4
>>03/01|00:00:00|      1195|  +22| dxe5 dxe4 Qxd8+ Kxd8 Bc4
>>04/01|00:00:00|      6651|  +22| dxe5 dxe4 Qxd8+ Kxd8 Bc4 Bb4+ Bd2
>>05/01|00:00:00|     31790|  +25| dxe5 dxe4 Qxd8+ Kxd8 Bc4 Nd7 Bxf7 Nxe5
>>06/01|00:00:00|    121312|  +32| dxe5 dxe4 Qxd8+ Kxd8 Bc4 Nd7 Bxf7 Nxe5 Bb3
>>07/01|00:00:01|    422581|  +36| dxe5 dxe4 Qxd8+ Kxd8 Bc4 Nd7 Bf4 Nh6 Bxh6 gxh6
>>Bxf7 Nxe5
>>08/01|00:00:03|   1263936|  +31| dxe5 dxe4 Qxd8+ Kxd8 Bc4 Nc6 Bxf7 Nxe5 Bd5 Nf6
>>Bg5
>>09/01|00:00:13|   4478639|  +30| dxe5 dxe4 Qxd8+ Kxd8 Bc4 Nc6 Bxf7 Nxe5 Bd5 Nf6
>>Bg5 Bb4+ Nd2
>
>
>My numbers look like this:  (one cpu of course)
>
>depth   nodes
>  1       124
>  2      1053
>  3      6981
>  4     16929
>  5     50059
>  6    149436
>  7    451934
>  8   1649304
>  9   4307609
> 10  14367818

Let me add Screamer's numbers to the mix:
--Normal Search--
New Board Position
rnbqkbnr/ppp2ppp/8/3pp3/3PP3/8/PPP2PPP/RNBQKBNR w KQkq -

PLY          NODES       TIME      SCORE  PV
______________________________________________________________
 5/00        45148       0.916     +0.42  dxe5 dxe4 Qxd8+ Kxd8 Nc3 Nc6 Nge2
 6/00       100702       1.986     +0.27  dxe5 dxe4 Qxd8+ Kxd8 Nc3 Bf5 Bg5+ Be7
								Bf4
 6/02       218944       4.236     +0.29  exd5 Qxd5 Nf3 exd4 Qxd4 Qxd4 Nxd4 c5
								Nf3
 7/00       676624      12.651     +0.20  exd5 Qxd5 dxe5 Qxe5+ Be2 Nc6 Nc3 Bb4
								Bd2
 7/01       849212      15.587     +0.42  dxe5 dxe4 Qxd8+ Kxd8 Nc3 Nc6 Nxe4 Nxe5
								Ne2
 8/00      1493145      26.732     +0.39  dxe5 dxe4 Qxd8+ Kxd8 Bf4 Bf5 Bc4 Ke8
e6
								Bb4+ Nd2
 9/00      3657460      64.420     +0.47  dxe5 dxe4 Qxd8+ Kxd8 Nc3 Bf5 Bc4 Nc6
								Bf4 Nh6
10/00      9200692     162.122     +0.53  dxe5 dxe4 Qxd8+ Kxd8 Nc3 Nc6 Bg5+ Nge7
								Bb5 Bd7 Nxe4 Nxe5 O-O-O
     ----- Search Stopped -----
     Total Search Time: 165 seconds
     Move: dxe5

--Aggressive Search--
New Board Position
rnbqkbnr/ppp2ppp/8/3pp3/3PP3/8/PPP2PPP/RNBQKBNR w KQkq -

PLY          NODES       TIME      SCORE  PV
______________________________________________________________
 5/00        42252       0.869     +0.42  dxe5 dxe4 Qxd8+ Kxd8 Nc3 Nc6 Nge2
 6/00        78935       1.570     +0.27  dxe5 dxe4 Qxd8+ Kxd8 Nc3 Bf5 Bg5+ Be7
								Be3
 6/01       170057       3.279     +0.29  exd5 Qxd5 Nf3 exd4 Qxd4 Qxd4 Nxd4 c5
								Nf3
 7/00       443019       8.364     +0.20  exd5 Qxd5 dxe5 Qxe5+ Be2 Nc6 Nf3 Qa5+
								Nc3 Nf6
 7/01       511573       9.647     +0.42  dxe5 dxe4 Qxd8+ Kxd8 Nc3 Nc6 Nxe4 Nxe5
								Ne2
 8/00       800300      14.873     +0.39  dxe5 dxe4 Qxd8+ Kxd8 Bf4 Bf5 Bc4 Ke8
e6
								Bb4+ Nd2
 9/00      1739280      31.124     +0.47  dxe5 dxe4 Qxd8+ Kxd8 Nc3 Bf5 Bc4 Nc6
								Bf4 Nh6
10/00      3964756      70.136     +0.53  dxe5 dxe4 Qxd8+ Kxd8 Nc3 Nc6 Bg5+ Nge7
								Bb5 Bd7 Nxe4 Nxe5 O-O-O
     ----- Search Stopped -----
     Total Search Time: 74 seconds
     Move: dxe5

William



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