Author: Andy Prap
Date: 00:27:28 12/03/03
Go up one level in this thread
Hello! How you install it in Arena GUI. Like any other engine? On December 02, 2003 at 12:44:14, F. Huber wrote: >Hello Chest friends! > >Now I´ve also implemented my last ideas for ChestUCI, and so here is >(as an early Christmas present ;-)) the recent (and probably definite) >version 3.0 of ChestUCI. > >What´s new? > >At first a few minor changes: >- displays immediately, when the search process is completed >- recognizes itself, if the start position is mate or stalemate >- output optimal adapted to the capabilities of the Shredder GUI >- better treatment of special cases with ´DefenderMoves´ and the > problem types ´self/help-mate/stalemate´ >- extended input possibilities for parameters in ´Expert mode´ > >Additionally now I´ve also included my little test file (´Mate.epd´) >with about 170 (from very easy to extremely hard) mate problems from >different fora for trying. > >Now about the more important enhancements: > >1) a new option ´FullMovelist´: >Normally (i.e. in earlier versions, and with this option switched ON) >ChestUCI provides the complete move tree as solution for a problem, >i.e. a solution variant for every possible opponent move. >In rare cases (at problems with a large search depth or a lot of possible >moves) this could lead to a very long time to produce the complete move tree, >although the solution has already be found much earlier. > >A small example for this behaviour (and not even the most extreme one!): >4k3/8/4pPp1/3pP1P1/2pP1K2/2P5/8/8 w - - >That´s a mate in 18, where my (slow) computer needs about 15 sec to find >the mate, but after that it takes another 2 min (!) to calculate and >produce the full solution file (with a size of 24MB!). > >By switching OFF this new option, in such cases now you can avoid the >calculation of the complete move tree and you´ll get the solution >immediately after the successfull mate searching. >Nevertheless you´ll still get a complete main line (PV) for every solution, >but simply not for all possible opponent moves. > >2) a further new option ´ShowStatistics´: >If this option is activated, then after each completed search depth ChestUCI >shows detailed informations about the previous calculation, which can give >a rather good indication to the further calculation process. > >Such an info line could look like this: >d=7 t=150.22s [9.30] n=11957kN [9.56] Hash: spd=3.55 in=1114866 out=18447 > >The values for depth(d), time(t) and nodes(n) are probably clear - the two >numbers in [...] are the so-called ´effective branching factors´ (EBF), >separately for time and node, and mean the ratio of the value for the current >search depth to the value for the previous search depth ( in other words: the >factor which shows, how much more this depth ´costs´ than the last one). >Larger values indicate an already ´exploding´ search tree, what means that the >further calculation could take a rather long time. > >The following 3 values after ´Hash:´ are the ´speed-up factor´ (spd) by the >hash table usage (i.e. "how much faster was the calculation WITH vs. WITHOUT >hash table"), the number of entries written to the hash table and the number >of deleted (or overwritten) hash table entries. >These values also provide an indication for the efficiency of the hash table >administration and show, if the hash size setting is sufficient. > >Surely these ´statistics´ are rather ´technical´ informations, but maybe a few >people are interested in it, since there are a lot of experts here. ;-) > >Now such a ´complete´ output of a problem solution by ChestUCI could look >as following: (a copy from the analyse window of Arena 1.0!) > >------------------------------------------------------------------------------ >ChestUCI Ver.3.0 UCI: > >CPU: Celeron 400MHz >FEN: 8/1K6/8/8/8/3N3R/n7/kb5R w - - >Search for Mate in 10 ... (Hash=64MB) >d=1 t=0.05s [1.00] n=0kN [1.00] Hash: spd=1.00 in=1 out=0 >d=2 t=0.11s [2.20] n=0kN [1.00] Hash: spd=0.99 in=1 out=0 >d=3 t=0.22s [2.00] n=1kN [14.88] Hash: spd=0.99 in=34 out=0 >d=4 t=0.38s [1.73] n=11kN [11.94] Hash: spd=1.35 in=774 out=0 >d=5 t=2.31s [6.08] n=120kN [11.24] Hash: spd=1.92 in=11422 out=0 >d=6 t=16.15s [6.99] n=1250kN [10.44] Hash: spd=2.50 in=124360 out=0 > 7 01:29 M7 Rh4 > 7 01:42 M7 Rh8 >d=7 t=150.22s [9.30] n=11957kN [9.56] Hash: spd=3.55 in=1114866 out=18447 >Search completed ... (Time=150.22s) >Mate in 7 found ! (2 Solutions in 02:30) > 7 02:31 M7 Rh8 Nb4 Ra8+ Na2 Ka6 Nb4+ Kb5+ Na2 Ka4 Nc1 Rxc1 Ka2 Kb4+ > 7 02:31 M7 Rh4 Nc3 Rc4 Ka2 Rxc3 Bxd3 Rxd3 Kb2 Rh2+ Kc1 Rf3 Kb1 Rf1+ >------------------------------------------------------------------------------ > >Ok, that´s the end of my detailed description of the new possibilities - >now I wish you much fun with this new verion, which is again - as usual - >downloadable from Alex´ UCI-homepage: > >http://www.uciengines.de/UCI-Engines/Chest/chest.html > >With my best regards, >Franz.
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