python创建一个国际象棋棋盘_python-chess: 一个纯Python国际象棋库

Changes:

* Replaced lookup table `chess.BB_BETWEEN[a][b]` with a function

`chess.between(a, b)`. Improves initialization and runtime performance.

* `chess.pgn.BaseVisitor.result()` is now an abstract method, forcing

subclasses to implement it.

* Removed helper attributes from `chess.engine.InfoDict`. Instead it is now

a `TypedDict`.

* `chess.engine.PovScore` equality is now semantic instead of structural:

Scores compare equal to the negative score from the opposite point of view.

Bugfixes:

* `chess.Board.is_irreversible()` now considers ceding legal en-passant

captures as irreversible. Also documented that false-negatives due to forced

lines are by design.

* Fixed stack overflow in `chess.pgn` when exporting, visiting or getting the

final board of a very long game.

* Clarified documentation regarding board validity.

* `chess.pgn.GameNode.__repr__()` no longer errors if the root node has invalid

FEN or Variant headers.

* Carriage returns are no longer allowed in PGN header values, fixing

reparsability.

* Fixed type error when XBoard name or egt features have a value that looks

like an integer.

* `chess.engine` is now passing type checks with mypy.

* `chess.gaviota` is now passing type checks with mypy.

Features:

* Added `chess.Board.gives_check()`.

* `chess.engine.AnalysisResult.wait()` now returns `chess.engine.BestMove`.

* Added `empty_square` parameter for `chess.Board.unicode()` with better

aligned default (⭘).