Tags: slm-git/python-chess
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python-chess v0.21.1 Bugfixes: * `Board.set_piece_at()` no longer shadows optional `promoted` argument from `BaseBoard`. * Fixed `ThreeCheckBoard.is_irreversible()` and `ThreeCheckBoard._transposition_key()`. New features: * Added `Game.without_tag_roster()`. `chess.pgn.StringExporter()` can now handle games without any headers. * XBoard: `white`, `black`, `random`, `nps`, `optim`, `undo`, `remove`. Thanks to Manik Charan. Changes: * Documentation fixes and tweaks by Boštjan Mejak. * Changed unicode character for empty squares in `Board.unicode()`.
python-chess v0.21.0
Bugfixes:
* `Board.set_piece_at()` no longer shadows optional `promoted`
argument from `BaseBoard`.
* Fixed `ThreeCheckBoard.is_irreversible()` and
`ThreeCheckBoard._transposition_key()`.
Changes:
* `chess.pgn.read_pgn()` **no longer adds the default 7 tag roster.**
For example `game.headers["White"]` may now raise `KeyError` instead of
providing the default value `?`. Use `game.headers.get("White", "?")` for
equivalent behavior.
* Documentation fixes and tweaks by Boštjan Mejak.
* Changed unicode character for empty squares in `Board.unicode()`.
New features:
* XBoard: `white`, `black`, `random`, `nps`, `optim`, `undo`, `remove`. Thanks
to Manik Charan.
python-chess v0.20.0 Bugfixes: * Some XBoard commands were not returning futures. * Support semicolon comments in PGNs. Changes: * Changed FEN and EPD formatting options. It is now possible to include en passant squares in FEN and X-FEN style, or to include only strictly relevant en passant squares. * Relax en passant square validation in `Board.set_fen()`. * Ensure `is_en_passant()`, `is_capture()`, `is_zeroing()` and `is_irreversible()` strictly return bools. * Accept `Z0` as a null move in PGNs. New features: * XBoard: Add `memory`, `core`, `stop` and `movenow` commands. Abstract `post`/`nopost`. Initial `FeatureMap` support. Support `usermove`. * Added `Board.has_pseudo_legal_en_passant()`. * Added `Board.piece_map()`. * Added `SquareSet.carry_rippler()`. * Factored out some (unstable) low level APIs: `BB_CORNERS`, `_carry_rippler()`, `_edges()`.
python-chess v0.19.0
New features:
* **Experimental XBoard engine support.** Thanks to Manik Charan and
Cash Costello. Expect breaking changes in future releases.
* Added an undocumented `chess.polyglot.ZobristHasher` to make Zobrist hashing
easier to extend.
Bugfixes:
* Merely pseudo-legal en passant does no longer count for repetitions.
* Fixed repetition detection in Three-Check and Crazyhouse. (Previously
check counters and pockets were ignored.)
* Checking moves in Three-Check are now considered as irreversible by
`ThreeCheckBoard.is_irreversible()`.
* `chess.Move.from_uci("")` was raising `IndexError` instead of `ValueError`.
Thanks Jonny Balls.
Changes:
* `chess.syzygy.Tablebases` constructor no longer supports directly opening
a directory. Use `chess.syzygy.open_tablebases()`.
* `chess.gaviota.PythonTablebases` and `NativeTablebases` constructors
no longer support directly opening a directory.
Use `chess.gaviota.open_tablebases()`.
* `chess.Board` instances are now compared by the position they represent,
not by exact match of the internal data structures (or even move history).
* Relaxed castling right validation in Chess960: Kings/rooks of opposing sites
are no longer required to be on the same file.
* Removed misnamed `Piece.__unicode__()` and `BaseBoard.__unicode__()`. Use
`Piece.unicode_symbol()` and `BaseBoard.unicode()` instead.
* Changed `chess.SquareSet.__repr__()`.
* Support `[Variant "normal"]` in PGNs.
* `pip install python-chess[engine]` instead of `python-chess[uci]` (since
the extra dependencies are required for both UCI and XBoard engines).
* Mixed documentation fixes and improvements.
python-chess v0.18.2 Bugfixes: * Fixed castling in atomic chess when there is a rank attack. * The halfmove clock in Crazyhouse is no longer incremented unconditionally. `CrazyhouseBoard.is_zeroing(move)` now considers pawn moves and captures as zeroing. Added `Board.is_irreversible(move)` that can be used instead. * Fixed an inconsistency where the `chess.pgn` tokenizer accepts long algebraic notation but `Board.parse_san()` did not. Changes: * Added more NAG constants in `chess.pgn`.
python-chess v0.18.1 Bugfixes: * Crazyhouse drops were accepted as pseudo legal (and legal) even if the respective piece was not in the pocket. * `CrazyhouseBoard.pop()` was failing to undo en passant moves. * `CrazyhouseBoard.pop()` was always returning `None`. * `Move.__copy__()` was failing to copy Crazyhouse drops. * Fix ~ order (marker for promoted pieces) in FENs. * Promoted pieces in Crazyhouse were not communicated with UCI engines. Changes: * `ThreeCheckBoard.uci_variant` changed from `threecheck` to `3check`.
python-chess v0.18.0 Bugfixes: * Fixed `Board.parse_uci()` for crazyhouse drops. Thanks to Ryan Delaney. * Fixed `AtomicBoard.is_insufficient_material()`. * Fixed signature of `SuicideBoard.was_into_check()`. * Explicitly close input and output streams when a `chess.uci.PopenProcess` terminates. * The documentation of `Board.attackers()` was wrongly stating that en passant capturable pawns are considered attacked. Changes: * `chess.SquareSet` is no longer hashable (since it is mutable). * Removed functions and constants deprecated in v0.17.0. * Dropped `gmpy2` and `gmpy` as optional dependencies. They were no longer improving performance. * Various tweaks and optimizations for 5% improvement in PGN parsing and perft speed. (Signature of `_is_safe` and `_ep_skewered` changed). * Rewritten `chess.svg.board()` using `xml.etree`. No longer supports *pre* and *post*. Use an XML parser if you need to modify the SVG. Now only inserts actually used piece defintions. * Untangled UCI process and engine instanciation, changing signatures of constructors and allowing arbitrary arguments to `subprocess.Popen`. * Coding style and documentation improvements. New features: * `chess.svg.board()` now supports arrows. Thanks to @rheber for implementing this feature. * Let `chess.uci.PopenEngine` consistently handle Ctrl+C across platforms and Python versions. `chess.uci.popen_engine()` now supports a `setpgrp` keyword argument to start the engine process in a new process group. Thanks to @dubiousjim. * Added `board.king(color)` to find the (royal) king of a given side. * SVGs now have `viewBox` and `chess.svg.board(size=None)` supports and defaults to `None` (i.e. scaling to the size of the container).
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