Tags: elfring/python-chess
Tags
python-chess v1.7.0 New features: * Added new models for ``chess.engine.Score.wdl()``: ``sf`` (the new default) and ``sf14``. * Added ``chess.Board.piece_map()``. Bugfixes: * ``chess.pgn``: Fix skipping with nested variations. * ``chess.svg``: Make check gradient compatible with QtSvg.
python-chess v1.6.0 New features: * Allow offering a draw to XBoard engines using ``chess.engine.Protocol.play(..., draw_offered=True)``. * Now detects insufficient material in Horde. Thanks @stevepapazis! Changes: * ``chess.engine.popen_engine(..., setpgrp=True)`` on Windows now merges ``CREATE_NEW_PROCESS_GROUP`` into ``creationflags`` instead of overriding. On Unix it now uses ``start_new_session`` instead of calling ``setpgrp`` in ``preexec_fn``. * Declare that ``chess.svg`` produces SVG Tiny 1.2, and prepare SVG 2 forwards compatibility. Bugfixes: * Fix slightly off-center pawns in ``chess.svg``. * Fix typing error in Python 3.10 (due to added ``int.bit_count``).
python-chess v1.5.0 Bugfixes: * Fixed typing of ``chess.pgn.Mainline.__reversed__()``. It is now a generator, and ``chess.pgn.ReverseMainline`` has been **removed**. This is a breaking change but a required bugfix. * Implement UCI **ponderhit** for consecutive calls to ``chess.engine.Protocol.play(..., ponder=True)``. Previously, the pondering search was always stopped and restarted. * Provide the full move stack, not just the position, for UCI pondering. * Fixed XBoard level in sudden death games. * Ignore trailing space after ponder move sent by UCI engine. Previously, such a move would be rejected. * Prevent cancelling engine commands after they have already been cancelled or completed. Some internals (``chess.engine.BaseCommand``) have been changed to accomplish this. New features: * Added ``chess.Board.outcome()``. * Implement and accept usermove feature for XBoard engines. Special thanks to @MarkZH for many of the engine related changes in this release!
python-chess v1.4.0 New features: * Let ``chess.pgn.GameNode.eval()`` accept PGN comments like ``[%eval 2.5,11]``, meaning 250 centipawns at depth 11. Use ``chess.pgn.GameNode.eval_depth()`` and ``chess.pgn.GameNode.set_eval(..., depth)`` to get and set the depth. * Read and write PGN comments with millisecond precision like ``[%clk 1:23:45.678]``. Changes: * Recover from invalid UTF-8 sent by an UCI engine, by ignoring that (and only that) line.
python-chess v1.3.3 Bugfixes: * Fixed unintended collisions and optimized ``chess.Piece.__hash__()``. * Fixed false-positive ``chess.STATUS_IMPOSSIBLE_CHECK`` if checkers are aligned with other king. Changes: * Also detect ``chess.STATUS_IMPOSSIBLE_CHECK`` if checker is aligned with en passant square and king. New features: * Implemented Lichess winning chance model for ``chess.engine.Score``: ``score.wdl(model="lichess")``.
python-chess v1.3.2 Bugfixes: * Added a new reason for ``board.status()`` to be invalid: ``chess.STATUS_IMPOSSIBLE_CHECK``. This detects positions where two sliding pieces are giving check while also being aligned with the king on the same rank, file, or diagonal. Such positions are impossible to reach, break Stockfish, and maybe other engines.
python-chess v1.3.0 Changes: * Introduced ``chess.pgn.ChildNode``, a subclass of ``chess.pgn.GameNode`` for all nodes other than the root node, and converted ``chess.pgn.GameNode`` to an abstract base class. This improves ergonomics in typed code. The change is backwards compatible if using only documented features. However, a notable undocumented feature is the ability to create dangling nodes. This is no longer possible. If you have been using this for subclassing, override ``GameNode.add_variation()`` instead of ``GameNode.dangling_node()``. It is now the only method that creates child nodes. Bugfixes: * Removed broken ``weakref`` based caching in ``chess.pgn.GameNode.board()``. New features: * Added ``chess.pgn.GameNode.next()``.
PreviousNext