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Excerpt from the [[WCCC 2019]] Tournament Rules <ref>[https://icga.org/wp-content/uploads/2019/03/Rules-ICGA-events-2019.pdf Rules for World Computer Chess Championship tournaments 2019 (pdf)]</ref>
# Each entry is a computing system and one or more humans who programmed it. In the computer system there is no restriction on the hardware. At least one of the program developers should attend the WCCC to operate the program, otherwise (i.e., for operators who are not developers of the program they are operating) the entry fee for the program is doubled.
# Each program must be the original work of the entering developers, possibly with the inclusion of game playing code and/or data from other sources for which the entering developers have a legal right of use. Developers whose code is derived from or includes (1) game-playing code; and/or (2) data written by others, must name (a) all the other developers of whom they are aware; and (b) the source of such code and/or data, in their tournament registration details.<br/><br/>Programs which are discovered to be undeclared derivatives of others may be designated invalid by the Tournament Director if he is convinced, after seeking advice if he feels that to be necessary, that the closeness of derivation is of such a level as to constitute unfair competition. A listing and an executable version of all game-related code and data running on the system must be available on demand to the Tournament Director prior to the start of and during the tournament. The Tournament Director has the right to submit the executable version of a program for testing for similarity with other known programs, and/or to submit the listing to an expert or experts of his choosing for examination, also to determine similarity. Under all circumstances the Tournament Director will take all reasonable steps to ensure that any such listingandlisting and/or executable are treated as being strictly confidential.<br/><br/> The entering developers must keep a copy of the source code of their entry until at least one year following the date of conclusion of the tournament, in order to be able to respond accurately to any questions about the source code that might be raised after the event by the Tournament Director.<br/><br/>In case you are using [[Neural Networks|neural networks ]] in any form, we request participants to inform the organisation about the way the neural networks are being used in the program.
# Participants are required to attend an organizational meeting on August 10, 2019 prior to the start of the tournament for the purpose of officially participating in the tournament. Operational rules (such as members of the Committee of Appeal) will be finalized at that meeting
# The format of the tournament follows from rule 2 of the General Rules (WCCC). The rate of play will generally be determined by the Tournament Director according to the number of programs entered and any other relevant factors. The 25th World Computer-Chess Championship (WCCC) is assumed to be an all-play-all tournament in which the rate of play will be all moves in 1 hour 45 minutes plus an increment of 15 seconds per move. The increment starts at move 1, i.e., the clock should be used during opening-book play.
# All monitors must be positioned so that the operator’s activities are clearly visible to the opponent. An operator may only: [a] enter moves, [b] respond to a request from the computer for clock information, and [c] under supervision of the (assistant) Tournament Director synchronize the computer clock to the normal chess clock. Misuse of this rule will be punished by the Tournament Director. If an operator needs to enter other information, it must be approved ahead of time by the Tournament Director. The operator may not query the system to see if it is alive without the permission of the Tournament Director.
# A team must receive permission from the Tournament Director to change from one computing system to another.
# Tie-breaking:<br/>(a) if precisely two participants are tied for first place, two play-off games of 30minutes 30 minutes plus 15 seconds per move per side are to be played. At the longest, such a match may take four hours. Should that match be drawn, then another two play-off games are to be played as given in the table below until there is a winner; <br/>(b) if more than two participants have an equal number of points, a tie-ranking order is defined as follows. The dominant ranking is by the [https://en.wikipedia.org/wiki/Sonneborn%E2%80%93Berger_score Sonnenborn-Berger scores];<br/>(c) the two participants ranked most highly by the tie-ranking order in (b) will then play off as in (a). An analogous tie-breaking procedure applies for establishing the second place and, if necessary, the third place.
# For the play-off procedure for the first place as given in rule 9, the colour assignment is drawn by lots before each of the matches played.
