Twisted Logic

Home * Engines * Twisted Logic

[ Logica, 1546 [1] Twisted Logic,

an UCI compliant chess engine written by Edsel Apostol in C. Twisted Logic was first released in August 2005 [2] and over time increased in strength from about 1600 to 2650 RUEL. An early 2007 version is available as open source licensed under the GNU GPL [3]. It is a clearly written didactic bitboard engine, with rudimentary search and evaluation, and was base of later Twisted Logic versions as well for Hannibal.

Features#

Board Representation

• Bitboards
• Kindergarten Bitboards

Search#

• Iterative Deepening
• Principal Variation Search
• Quiescence Search
• Mate Distance Pruning

Evaluation#

• Material
• Piece-Square Tables
• Tapered Eval

See also#

• Combinatorial Logic
• Sequential Logic
• Hannibal
• Invictus

Forum Posts#

2005#

• Twisted Logic Chess Engine v0.001 released! by Edsel Apostol, Winboard Forum, August 11, 2005
• Twisted Logic Chess Engine 0.016 released! by Edsel Apostol, Winboard Forum, November 10, 2005

2006#

• Twisted Logic 037o released!!! by Edsel Apostol, Winboard Forum, April 26, 2006
• Twisted Logic 0.037z1 released!!! by Edsel Apostol, Winboard Forum, May 08, 2006
• Twisted Logic 0.057e3 released! by Edsel Apostol, Winboard Forum, July 11, 2006
• Twisted Logic 0.065e35 and 0.065e37 released! by Edsel Apostol, Winboard Forum, August 31, 2006

2007#

• Twisted Logic 0.085 released!] by Edsel Apostol, Winboard Forum, March 18, 2007
• Twisted Logic 0.099x released!!! by Edsel Apostol, Winboard Forum, May 08, 2007
• Twisted Logic 20070602 released!!! by Edsel Apostol, Winboard Forum, June 03, 2007
• Twisted Logic 20070706 released!!! by Edsel Apostol, Winboard Forum, July 06, 2007

2008 …#

• Twisted Logic 20080404x is available! by Edsel Apostol, Winboard Forum, April 04, 2008
• Twisted Logic 20080620! by Edsel Apostol, Winboard Forum, June 21, 2008

2010 …#

• Twisted Logic 20100131x by Edsel Apostol, CCC, February 02, 2010

External Links#

Chess Engine#

• Early version of Twisted Logic chess engine from 2007
• Twisted Logic in CCRL 40/40

Misc#

• twisted - Wiktionary
• Twisted from Wikipedia
• logic - Wiktionary
• Logic from Wikipedia
• Logic (disambiguation) from Wikipedia
• Outline of logic from Wikipedia
• Mathematical logic from Wikipedia]
• Philosophical logic from Wikipedia
• Logical form from Wikipedia
• Coldplay - Twisted Logic (2005) [4], YouTube Video

References#

1. ↑ Paul of Venice (1546). Logica. Bartolomeo e Francesco Imperatore, Typographic brand on the title page
2. ↑ Twisted Logic Chess Engine v0.001 released! by Edsel Apostol, Winboard Forum, August 11, 2005
3. ↑ Early version of Twisted Logic chess engine from 2007
4. ↑ Twisted Logic Tour

Up one Level