Chess engines support one or both major protocols called Chess Engine Communication Protocol, such as WinBoard (Windows)/XBoard (Unix), or Universal Chess Interface (UCI). Chess engines are good for analyzing games and using it as a playing partner. UCI_LimitStrength must be checked.Chess engines are computer programs that analyzes chess positions and makes decisions on the best chess moves. UCI_Elo: Elo to which Chiron should limit its playing strength. UCI_LimitStrength: if checked Chiron will limit its playing strength. UCI_ShowCurrLine: if checked Chiron will show the current line it is calculating. Large pages can speedup memory access, increasing Chiron speed.īlockage Detection: it can be Disabled, Analysis (to use the pawn blockage detection only in analysis mode) or Always. Use Large Pages: if checked Chiron will try to allocate the memory for the hash table using large pages. NUMA: it should be checked if Chiron runs on a NUMA system (typically one with multiple sockets) to improve speed. If you want Chiron to avoid draws set a positive value otherwise negative. It is recommended to use MultiPV only for analysis and not for engine-engine playing.Ĭontempt: Chiron’s draw contempt in centipawns. MultiPV: if you set a value different from 1, Chiron will show the variations for the n best moves but the search will be a bit slower. This option overrides the limit imposed by the Auto Limit Book option.
#CHESS ENGINE UCI ENDGAME TABLEBASE ARENA FULL#
The purpose of this option is to avoid that Chiron plays too many moves from the opening book even at a low Elo, which would be unrealistic.īook Depth: if you set a value different from 0, Chiron will limit the depth in full moves of its opening book to the value set. Tournament Book: if checked Chiron will always play the best moves according to its opening book (ie the one with the highest weight).Īuto Limit Book: if checked Chiron will automatically limit its opening book knowledge (depth and width) according to the Elo set in UCI_Elo. It is probed when there are no moves for the position in the primary book. Second Book File: path of the second opening book. It deduces the format of the book from the file extension. Chiron supports Polyglot, CTG and Arena opening books.
If it’s not, the GUI will handle the opening book.īook File: path of the opening book. OwnBook: it must be checked if you want Chiron to use its own opening book. Chiron’s time management is different when pondering is allowed. Ponder: it is checked if pondering (ie thinking during opponent’s time) is allowed. It can be LOAD_NONE if you don’t want to load bitbases in RAM at all, LOAD_4MEN to load all the 4 pieces bitbases, SMART_LOAD to load the most used and LOAD_5MEN to load all the 5 pieces bitbases (about 225MB) Scorpio Egbb Load Type: type of bitbases loading in RAM at program startup. It contains the results of positions for which the Scorpio bitbases have been already probed. Scorpio Egbb Cache: size of the Scorpio bitbases cache in MB. Scorpio Egbb Path: location of Scorpio bitbases. Use Scorpio Egbb: it must be checked if you want Chiron to use Scorpio endgame bitbases. Syzygy50MoveRule: uncheck it if you want Chiron to ignore the 50 moves rule otherwise leave it checked. It contains the results of positions for which the Gaviota tablebases have been already probed. GaviotaTbCache: size of the Gaviota EGTB cache in MB. Chiron will automatically detect the compression scheme. GaviotaTbPath: location of the Gaviota endgame tablebases. It contains the results of positions for which the Nalimov tablebases have been already probed. NalimovCache: size of the Nalimov EGTB cache in MB. NalimovPath: location of the Nalimov endgame tablebases. Tablebases Probe Depth: minimum depth for probing the endgame tablebases. Tablebases Usage: it can be Never (tablebases never probed), Only At Root (tablebases probed only at the root when on the board there are 5 or less pieces) or Everywhere (tablebases probed also in the search). Set it to Disabled if you don’t want to use tablebases. Tablebases: type of endgame tablebases to use.
Log File: if checked Chiron will create a log file in the subfolder “logs”. Don’t use more than the available physical memory otherwise also virtual memory (ie the hard disk) will be used and Chiron will run slower.Ĭlear Hash: when this button is pushed the hash table, the pawn hash table and the evaluation cache are cleared.
#CHESS ENGINE UCI ENDGAME TABLEBASE ARENA 64 BIT#
The maximum size is 2GB in the 32 bit version and 1TB in the 64 bit version.
Threads: number of threads Chiron will use while thinking.
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