Sungorus

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[ Phodopus Sungorus [1] Sungorus,

an UCI compliant open source chess engine by Pablo Vazquez, first released in June 2009 [2]. Last recent version is Sungorus 1.4 from June 2010, which was base of further development by Pawel Koziol and his Rodent engine [3].

Board Representation

• 6+2 Bitboard Board Definition
• 8x8 Board
• Kindergarten Bitboards
• BitScan by De Bruijn Multiplication
• SWAR-Popcount

Search

• Fail Soft Alpha-Beta with Principal Variation Search
• Quiescence Search at depth <= 0
• Transposition Table
• Null Move Pruning
• PV-Table on Stack
• MVV/LVA for sorting captures
• History Heuristic

Evaluation

• Material
• Piece-Square Tables
• Mobility

See also#

• Hamsters
• Rodent

Forum Posts#

• Sungorus 1.0 by Pablo Vazquez, CCC, June 18, 2009
• Sungorus 1.0.1 : 1856 by Patrick Buchmann, CCC, June 21, 2009
• Sungorus 1.1 by Pablo Vazquez, CCC, July 05, 2009
• Sungorus 1.1 : 2167 by Patrick Buchmann, CCC, July 10, 2009
• Sungorus 1.2 by Pablo Vazquez, CCC, August 06, 2009
• Sungorus 1.2 : 2157 by Patrick Buchmann, CCC, August 08, 2009
• Sungorus 1.3 by Pablo Vazquez, CCC, February 13, 2010
• Sungorus 1.4 by Pablo Vazquez, CCC, June 30, 2010

External Links#

Chess Engine#

• Sungorus 1.4 - download
• Sungorus 1.4 64-bit in CCRL 40/40

Misc#

• Djungarian hamster (Phodopus sungorus) from Wikipedia
• Mongolian three-toed jerboa (Stylodipus sungorus) from Wikipedia
• Phodopus sungorus - Wikispecies

References#

1. ↑ Djungarian hamster (Phodopus sungorus) named Świr eating pumpkin (Cucurbita) seed, Photo by Mar lena, April 09, 2012, Djungarian hamster (Phodopus sungorus) from Wikipedia
2. ↑ Sungorus 1.0 by Pablo Vazquez, CCC, June 18, 2009
3. ↑ open source gift for Christmas by Pawel Koziol, CCC, December 25, 2011

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