Author: Eelco de Groot
Date: 06:51:09 01/06/06
Go up one level in this thread
On January 06, 2006 at 08:53:19, Tony Nichols wrote:
>
> I am interested in finding the strongest tactical engine for analysis. I don't
>care how strong it is in actual play. Any suggestions?
>Thanks
>Tony
Hello Tony,
I think it depends a bit on what you want to do with it and the sort of
positions you want to analyze; mate combinations, simple or hard sacrifices or
combinations that look good but you suspect could be refuted, or combinations
that require very accurate play by both sides for e.g. correspondence play. I
suppose this last category is the hardest. In all categories I think it is
probable that results will depend very much on positional knowledge! Something
similar seems to apply for Rybka's best blitz settings for instance! So the
issue has many sides. I don't have a Rybka winfinder yet so cannot compare!
For a short answer, here some Pro Deo 1.1 Tactical settings that I made quite a
while months back. I don't think they are optimal for the task but still can
help in analysis, Nolot positions for instance.
-------------------------------------------------------------------------------
[Personality = Vulcan Q1e-Tactical Engine] * Pro Deo 1.1 (February 2005)
[Pawn Value = 90]
[Knight Value = 90]
[Bishop Value = 90]
[Rook Value = 90]
[Queen Value = 90]
[My Queen = 91]
[King Safety = 405]
[Mobility = 125]
[Pawn Structure = 110]
[Passed Pawns = 125]
[Pins = 115]
[Bishop Pair = 110]
[Chess Knowledge = 200]
[Attractiveness = 250]
[Attacking = 450]
[Strength of Play = 100]
[Draw Contempt Factor = 0.00]
[Selective Search = 80]
[Search Technique = NULLMOVE]
[Engine Master = off] off
[Engine Learner = off] off|on
[Book Learner = off] off|passive|moderate|strong|aggressive
[Position Learner = off] off|on
[Extended Book Learner = off] off|read|write|read&write
*
[Pruning = MISC_25] *
[Pruning = MISC_37] *
[Pruning = MISC_40] *
[Pruning = MISC_52] *
[Pruning ? MISC_53] *
[Pruning = MISC_66] *
[Pruning = MISC_69] *
[Pruning = MISC_78] *
*
[Center Control = 30] *
[Bishop Mobility = 25] *
[Right to Move = 75] *
[Strong Squares = 128] *
*
[Pruning = MISC_02] *
[Pruning = MISC_03] *
[Pruning = MISC_39] *
[Pruning = MISC_08] *
[Pruning = MISC_12] *
[Pruning = MISC_16] *
[Pruning = MISC_22] * Was: Slightly safer Selectivity
[Pruning = MISC_30] * extend singular checks
[Pruning = MISC_36] * Extend double attacks (W6) at the leafs
[Pruning = MISC_38] * New capture extension
[Pruning ? MISC_28] * (2,2,1,1) >> in test <<
[Blitz Time Control = 120] * use more time at blitz levels
*
[Pawn Pressure midg = 165] * weight pawn pressure middlegame
[Pawn Pressure end0 = 140] * weight pawn pressure early endgame
[Pawn Pressure end1 = 125] * weight pawn pressure endgame
[Pawn Pressure end2 = 110] * weight pawn pressure simple endgame
*
[Knight Mobility = 88] * 88
[Double Pawns = 112] * 112
[Pawn Formation = 115] * 108
[Weak Pawns = 112] * 112
[Minimum Knight Mobility = 100] * 100
[Minimum Bishop Mobility = 100] * 100
[Passed Pawn King Tropism = 100] * king tropism to own passed pawns
[Progressive Isolated Pawns = 100] * weight isolated pawns (new style)
*
[Adjusted Selectivity MIDG = 3] * Maximum selective depth (midgame)
[Adjusted Selectivity END0 = 3] * Maximum selective depth (early endgame)
[Adjusted Selectivity END1 = 3] * Maximum selective depth (endgame)
[Adjusted Selectivity END2 = 3] * Maximum selective depth (simple endgame)
*
[Recaptures = 3.00] * 1.50|2.00|2.80|3.00
[ANTI-GM = OFF]
[EVALUATION = SMART]
[Extensions (remaining)= 3]
[Extensions (checks)= normal] * low|moderate|normal|strong|all
[Extensions (captures)= 0]
-------------------------------------------------------------------------------
I made many more of these but did not do extensive tests with the tactical
testsets. I could easily make some new version, based on the last Vulcan
{9k17pr} for "normal" analysis, if there is any interest in it. They should not
do badly in tests but actual gameplay seemed louzy. Maybe for one minute games
it is good..
Eelco
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