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NEWS.md

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###21/12/2024 - 0.7.2

  • Now it compiles again

###20/12/2024 - 0.7.1

  • Compiles again (edit: no it doesn't)

###30/01/2014 - 0.7.0

  • Works on 64-bit systems
  • Extremely minor tweaking of evaluation (of most likely no consequence)
  • Fixed a bug where it could make an illegal move on the 50th move of a 50-move draw.
  • Note that the book format changed. Books are also not interchangeable between 32- and 64-bit systems

###25/09/2003 - 0.6.1

  • Tweaked move ordering (including addition of killer move heuristic)
  • Minor tweaking of evaluation (with unknown consequences)
  • More configurable settings
  • Removed MTD(f) and standard alpha-beta search as search options
  • Bugfixes (including K v K draw claim)

###17/09/2002 - 0.6.0

  • Added null-move pruning and aspiration window.
  • Improved endgame evaluation (or, more precisely, it now has a separate endgame evaluation). Same with king execution phase.
  • Now claims draw on insufficient material.
  • Slightly friendlier command line mode.
  • Minor bugfixes (fen/epd parsing).

###18/08/2002 - 0.5.1

  • Now can be configured through file.
  • It can now resign.
  • Switched, and very slightly tweaked, default evaluation function.
  • Speeded up by about 20%.

###03/08/2002 - 0.5.0

  • Switched default search algorithm to negascout
  • Now recover a PV line for display
  • Minor transposition table tweaking
  • Minor fixes of bugs introduced in 0.4.0
  • Now compiles out-of-the-box in clig-less systems.

###17/07/2002 - 0.4.0

  • Implemented move now and analyze.
  • Switched to 0x88 move generation.

###11/04/2002 - 0.3.3

  • Added opening book.
  • EPD suites and lines can be solved
  • Made it portable to cygwin
  • Changed default hashtable size to 32MB.
  • Can now specify hashtable size in kilobytes.
  • Made aleweights.out be loaded by default

###03/04/2002 - 0.3.2

  • No changes (reflex action release that shouldn't have
  • happened due to unkown last release)

###08/03/2002 - 0.3.1

  • Changed to delayed checking of check for speculated performance improvement (even though it does not seem to have materialised)
  • Got rid of a couple of often used functions with array lookups for definite performance gains.
  • Completed switch to move/unmove.

###26/02/2002 - 0.3.0

  • Changed name to Small Potato
  • Changed to move/unmove instead of move/copy struct (faster)
  • Implemented undo and remove for xboard/protocol 2 programs
  • (Note: Search instability noted in previous version is "meant" to be there. Caused by the nature of transposition tables, not by some bug in implementation)
  • No bugfixes

###07/11/2001 - 0.2.4

  • Better randomised play
  • Switched to 64-bit random hashes
  • Lots of bugfixes, including the crash on start introduced in v0.2.3, PGN output bugfixes, and some silliness in QuiescentSearch.
  • (NOTE: Search instability still there)

###20/10/2001 - 0.2.3

  • Added history ordering
  • Better time management.
  • PGN output for game recording.
  • Bugfixes

###13/10/2001 - 0.2.2

  • Changed GPL license
  • Added quiescent search
  • Bugfixes

###09/10/2001 - 0.2.1

  • Added internal iterative deepening
  • Bugfixes

###03/10/2001 - 0.2.0

  • Switched to MTD(f)
  • Bugfixes

###01/10/2001 - 0.1.5

  • Bit of documentation.
  • Fixed the hashtable (maybe)

###01/10/2001 - 0.1.4

  • Improved packaging.
  • Couple of bugfixes.

###16/04/2001 - 0.1.3

  • Switched to Zobrist hashing.
  • Switched to negamax
  • Added runtime evaluation board loading
  • Lots of bugfixes (especially hashtable)

###14/03/2001 - 0.1.2

  • Added hashtable.
  • Lots of bugfixes.

###14/02/2001 - 0.1.1

  • Added first move move ordering.
  • Improved FICS automation.
  • Better logging and recording
  • Lots of bugfixes

###25/12/2000 - 0.1.0

  • Initial release