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CHANGELOG.md

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Changelog

Unreleased

0.7.0 (2021-08-21)

Fixed

  • Fix getopts parsing (#75)

Added

  • Add no_std support to lib (#81)
  • Add chess prelude to lib (#82)

Changed

  • Increase search reductions (#47)
  • Speed up large transposition table creations (#48)
  • Used std::time instead of time (#49)
  • Upgrade dependencies (#58)
  • Migrate from TravisCI to GitHub Actions (#66)
  • Upgrade to GitHub-native Dependabot (#72)
  • Update colored requirement from 1.9.3 to 2.0.0 (#60)

0.6.0 (2019-12-22)

Fixed

  • Fix castling right update bug
  • Fix pawn move disambiguation in SAN
  • Fix white pieces color with black on white terminals in CLI
  • Avoid panicking in CLI

Added

  • Add makefile
  • Parse moves in SAN format (#41)
  • Add go movetime command to UCI (#40)
  • Add load pgn and save pgn commands to CLI (#42)
  • Add play none subcommand to CLI
  • Add init command to CLI
  • Add command history file to CLI (#38)
  • Add autocompletion to CLI (#36)

Changed

  • Increase futility pruning depth (#44)
  • Avoid TT cutoff on PV-nodes
  • Split PV over multiple lines in CLI mode (#45)
  • Add error propagation to CLI commands (#43)
  • Improve colors in CLI
  • Refactor board drawing
  • Update dependencies

0.5.0 (2018-07-18)

Added

  • Use Hyperbola Quintessence and First Rank Attacks for sliding piece attacks
  • Use Xorshift random number generator for Zobrist hashing
  • Add depth parameter to perft CLI command
  • Add save fen and save pgn CLI commands
  • Add --silent flag to executable

Changed

  • Improve CLI output
  • Rename load CLI command to load fen
  • Rename Direction to Shift and introduce a new (compass) Direction
  • Rename Move* to PieceMove*
  • Store castling rights in a u8 in Position
  • Use fail-soft instead of fail-hard in search
  • Refactor many parts of the code

0.4.0 (2017-11-20)

Added

  • Add library with public API and documentation
  • Add getopt to parse program options
  • Add readline to user interface
  • Add piece square tables to evaluation
  • Add upper and lower bounds in transposition table
  • Add age field in transposition table
  • Add delta pruning to quiescence search
  • Add transposition table to quiescence search
  • Add basic UCI support
  • Add very basic parallel search in threads with shared transposition table

Changed

  • Improve CLI
  • Improve statistics debug output
  • Refactor many parts of the code
  • Allow NMP, IID, and LMR at shallower depth
  • Set NMP R to 3

0.3.0 (2017-10-11)

Added

  • Add principal variation search
  • Add internal iterative deepening
  • Add late move reduction
  • Add killer heuristic
  • Add basic null move pruning
  • Add basic futility pruning
  • Add basic mobility evaluation
  • Add static exchange evaluation

Changed

  • Use static exchange evaluation in moves ordering
  • Skip bad captures in quiescence search

0.2.0 (2016-08-22)

Added

  • Add basic quiescence search
  • Add basic transposition table
  • Add MVV/LVA moves ordering by insertion sort
  • Add staged moves generation
  • Add fullmoves and halfmoves counting
  • Add draw detection
  • Add mate pruning
  • Add XBoard memory command
  • Add color and debug command line flag

Changed

  • Improve user interface
  • Display game result in XBoard
  • Save best move during iterative deepening
  • Print principal variation from transpositions table

Fixed

  • Fix compiler warnings
  • Fix castling bug
  • Fix bug when undoing promotions

0.1.0 (2016-08-10)

Changed

  • Improve time management

Fixed

  • Fix compiler errors and warnings
  • Fix bug in search function
  • Fix promotion parsing bug

0.0.1 (2015-06-09)

Added

  • Add bitboard moves generation with De Bruijn sequence
  • Add board array representation
  • Add basic evaluation
  • Add alpha beta pruning
  • Add iterative deepening
  • Add basic time management
  • Add support of XBoard protocol
  • Add Zobrist hashing
  • Add FEN support
  • Add perft, perftsuite, and divide commands in user interface
  • Add Travis CI

0.0.0 (2014-12-23)

Added

  • Initial commit