# Crate myopic_brain[−][src]

## Modules

constants | |

enumset | A library for defining enums that can be used in compact bit sets. It supports enums up to 128 variants, and has a macro to use these sets in constants. |

hash | |

interactive | |

negascout | |

pos |

## Structs

BitBoard | A bitboard is a value type wrapping a 64 bit integer which represents a set of squares on a chess board. Each bit is mapped to a particular square on the board, 0 -> H1, 1 -> G1,…, 8 -> H2,…, 63 -> A8. For example if we know a piece to reside on a particular square we can use a bitboard to to capture the available moves for that piece. |

Board | |

EvalBoard | |

MaterialParameters | Allows one to configure the parameters of the evaluation board. |

PieceValues | |

PositionTables | |

SearchOutcome | Data class composing information/result about/of a best move search. |

SearchParameters | |

UciMove | String wrapper representing a chess move formatted using the uci standard. We can use this to reflect moves outside the context of a board. |

## Enums

CastleZone | Represents one of the four different areas on a chessboard where the special castling move can take place (two for each side). |

Dir | Type representing a square on a chessboard. |

FenComponent | Represents the individual components which make up a board position encoded as a FEN string. |

Move | |

MoveComputeType | |

Piece | Value type wrapping a single integer representing one of the 12 different pieces in a game of chess. |

Side | Represents the two different teams in a game of chess. |

Square | Type representing a square on a chessboard. |

Termination | Represents the possible ways a game can be terminated, we only consider a game to be terminated when a side has no legal moves to make or if a special draw condition is met like position repetition. If a side has no legal moves and is currently in check then the game is lost, if it is not in check then the game is drawn. |

## Constants

STARTPOS_FEN | The start position of a chess game encoded in FEN format |

## Traits

ChessBoard | Trait representing a mutable state of play of a chess game which can be evolved/devolved via (applicable) Move instances, compute the set of legal moves and queried for a variety of properties. |

EvalChessBoard | Extension of the Board trait which adds a static evaluation function. |

Reflectable | Chess is a symmetric game and this trait represents a component of the game which can be reflected to it’s symmetric opposite component. |

SearchTerminator | Represents some object which can determine whether a search should be terminated given certain context about the current state. Implementations are provided for Duration (caps the search based on time elapsed), for usize which represents a maximum search depth and for a pair (Duration, usize) which combines both checks. |

## Functions

search | API function for executing search on the calling thread, we pass a root state and a terminator and compute the best move we can make from this state within the duration constraints implied by the terminator. |

start | Return the start position of a standard game |