Author: Albert Silver
Date: 08:40:04 10/07/04
I've been holding back on publishing my settings since my previous best used the MISC_58 switch and I wasn't happy with some of the things it caused, even if the tactics seemed improved. One very consistent characteristic caused by the switch is to have PD sacrifice a piece for pawns, even if there are lots of other pieces on the board, and the pawns are on their beginning squares. Sometimes it works, and sometimes not, but as a player I really wasn't convinced. Unfortunately, even though I managed to find many many settings that did well on test suites (one does have to start somewhere after all), the playing usually didn't follow. One significant test of fire is to run the Nunn 2 set in blitz against Ruffian. Ruffian is quick to punish mediocre play in blitz. Until now, none of my settings were able to do better than the default settings, so why bother publishing them? I consider the +1 result using the [Time Control = 125] result as the standard and not the -8 with the older time control setting. I've also gotten some funny blitz results with kamikaze settings (very high king safety values, low piece values, etc) but the games are not very inspiring, even if pretty comical. The following settings seem relatively well-balanced from the games I saw, do not use the MISC_58 switch, and just beat Ruffian 22-18 (+19 -15 =6) in the Nunn 2 blitz match (single CPU (Athlon 2400XP+), ponder off, 60 MB hash each, 5mins + 3s). I saw a number of the games, and overall was pretty satisfied with its play. It bears testing at slower time controls, and I'll do so, but here they are for any wanting to give them a run. Note that the learning was all turned off for the testing, so do not forget to turn them back on. [Personality = Pro Deo S&D6.ENG] * Search & Destroy v6.0 (October 2004) [AUTHOR = Albert Silver] [Pawn Value = 100] [Knight Value = 100] [Bishop Value = 100] [Rook Value = 100] [Queen Value = 100] [My Queen = 101] * new since September 1, 2004 [King Safety = 165] [Mobility = 115] [Pawn Structure = 100] [Passed Pawns = 111] [Pins = 100] [Bishop Pair = 100] [Chess Knowledge = 100] [Attractiveness = 103] [Attacking = 107] [Strength of Play = 100] [Draw Contempt Factor = 0.00] [Selective Search = 100] [Search Technique = NULLMOVE] [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 [Clear Hash Table = Never] * Always|Never|PB only [Pruning = MISC_17] * [Pruning = MISC_14] * Queen ending (new style) [Pruning = MISC_25] * [Pruning = MISC_37] * [Pruning = MISC_40] * [Pruning = MISC_52] * [Pruning = MISC_66] * [Pruning = MISC_69] * [Pruning = MISC_78] * adaptive nullmove R=2/3 [Pruning = MISC_03] * move ordering speedup [Pruning = MISC_21] * Lazy Eval (tuning) [Checks Depth = 1] * limit QS checks to 1 ply [Pruning = MISC_30] * extend singular checks [Pruning = MISC_42] * extend first check too [Pruning = MISC_47] * King Safety extension [Pruning = MISC_26] * Endgame extensions [Pruning = MISC_07] * No recapture extension when capture is just a pawn (speedup=13%) [Pruning = MISC_65] * research fail-high-error one ply deeper (!) [Pruning = MISC_28] * More check extensions (!) [Pruning = MISC_38] * New capture extension [Pruning = MISC_44] * New endgame extension [Lazyeval MIDG = moderate] * normal|moderate|strong promising * [Center Control = 30] * 25 [Bishop Mobility = 25] * 25 [Right to Move = 75] * 75 [Strong Squares = 120] * 125 [Pawn Pressure midg = 165] * weight pawn pressure middlegame [Pawn Pressure end0 = 150] * weight pawn pressure early endgame [Pawn Pressure end1 = 135] * weight pawn pressure endgame [Pawn Pressure end2 = 115] * weight pawn pressure simple endgame [Knight Mobility = 88] * 88 [Double Pawns = 110] * 150 [Pawn Formation = 103] * 100 [Weak Pawns = 110] * 100 [Passed Pawn King Tropism = 100] * king tropism to own passed pawns [Progressive Isolated Pawns = 100] * weight isolated pawns (new style) [Adjusted Selectivity MIDG = 6] * Maximum selective depth (midgame) [Adjusted Selectivity END0 = 5] * Maximum selective depth (early endgame) [Adjusted Selectivity END1 = 4] * Maximum selective depth (endgame) [Adjusted Selectivity END2 = 3] * Maximum selective depth (simple endgame) [Time Control = 125] * 125 [Time Control Status = ALWAYS] * ALWAYS|PB ONLY * [Minimum Knight Mobility = 100] * 100 [Minimum Bishop Mobility = 100] * 100 [ANTI-GM = OFF] [EVALUATION = SMART] [Extensions (remaining)= 3] [Extensions (checks)= 0] [Extensions (captures)= 0]
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