Author: Howard Exner
Date: 17:07:05 11/15/98
Although Rebel doesn't have fancy names for different chess playing personalities it does offer lots of flexibility in the various settings, AntiGM, Selection, Combination and Playstyle. Some settings I notice can detect best moves a ply earlier, usually when one sets Selection lower to say, 3 (for endgames) and 4 for middlegame positions. These positions for example are solved much quicker when selection is set to 4, AntiGM=Strong and playStyle = Active or Aggressive. 4r1k1/p1pb1ppp/Qbp1r3/8/1P6/2Pq1B2/R2P1PPP/2B2RK1 b - - id Ren5 - Qxf3; bm d3f3; rr3qk1/1b3p2/4pPp1/1pppP3/p6Q/PnPP2P1/1P3PB1/R3R1K1 w - - id Kh2 - Cmb; bm Kh2; 8/p5Nk/3B2pp/8/2PP1pn1/4p3/P3P1Bq/R2R1K2 b - - id Nf2 - Cmb; bm Nf2; Overall my favoutite choice is AntiGM=Strong, PlayStlye=Agressive and Selection=Normal. I like Rebel's use of Normal Selection setting as it adapts itself to the position. Sometimes it misses as in the above 3 examples but overall it seems to hit on the right choice based on the positions I've been testing. I'm wondering as Computers get faster will the Selection settings get smaller. Too high a selection setting sometimes makes Rebel not consider certain moves for more than a brief passing. Will added speed allow the program to spend a bit of extra time on a wider range of moves so as to not miss something (as in the trend of Rebel 10, which according to the description on Ed's homepage that the selection settings where reduced overall)? Anyone else experimenting with the different parameters that chess programs offer? I am aware of the CM series alternate settings. How about other programs?
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