Gambit Fruit
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Gambit Fruit,
a GPL licensed, Fruit and Toga derivative open source engine written by Ryan Benitez in C++. It has some interesting changes primarily based on the last open-source-version Fruit 2.1, the goal being a fun free and aggressive chess engine [3]. Short after its release in end of 2005, Ryan joined forces with Fabien Letouzey and Joachim Rang for a commercial Fruit, and incorporated Gambit Fruit features into Fruit 2.2 and subsequent versions.
Added Features
and changes in Gambit Fruit:
- Alternate piece-square tables
- Rook pawn score adjustment
- Rook Bishop bonus
- Queen Knight bonus
- Two Rook penalty
- Two Knight penalty
- Minor tuning of piece values
- King tropism
- Side to move bonus
- Rook on bad pawn file bonus
- Pawns on Bishop colour penalty (fewer pawns is better for bishops and with one bishop you should not block it with your own pawns)
- Improved pawn structure
- New Lazy Eval
- Rebel reductions with re-searches [4] [5]
- Bitbases (using Scorpio bitbase files)
- Contempt factor
Acknowledgment
Thank you to Fabian for Fruit 2.1, Thomas for Toga, and to Bryan Hofmann for the Windows compile [6].
See also
Forum Posts
- Re: Gambit Fruit ? by Ryan B., CCC, November 15, 2005
- Has anyone tested Gambit Fruit with Rebel Reductions on? by Ryan B., CCC, November 15, 2005 » Reductions, Rebel
- Gambit Fruit Beta 3 available by Ryan B., CCC, November 19, 2005
- Gambit Fruit 1.0 Beta 4b is out now by Ryan Benitez, Winboard Forum, December 02, 2005
- congratulations to gambit-fruit! by Thorsten Czub, CCC, January 13, 2006
- Chess engine oldies upgrades by Denis P. Mendoza, Toga Developers Discussion Board, December 30, 2008
- posix source for GambitFruit4bxSE ? by Martin Helmer, CCC, January 28, 2009
External Links
References
- ↑ Minoan Ceramic from Phaistos, Heraklion Archaeological Museum
- ↑ Fruchtbarkeitsschale für die Opferung von Früchten aus Phaistos zu sehen im Archäologischen Museum in Herakleion, Minoische Religion from Wikipedia.de (German)
- ↑ Re: Gambit Fruit ? by Ryan B., CCC, November 15, 2005
- ↑ Has anyone tested Gambit Fruit with Rebel Reductions on? by Ryan B., CCC, November 15, 2005
- ↑ Programmer Corner - How Rebel Plays Chess - Reductions by Ed Schröder, pdf reprint
- ↑ Gambit fruit, gfruit4b.zip - readme.txt
