Pawny, an UCI compatible open source chess engine under the GPL, written by Mincho Georgiev in C. From Mincho's description, Pawny's board was represented as 16*16 array, filled with piece codes. Piece Lists are represented as array of linked lists. It searches by PVS with aspiration, IID, adaptive null move pruning, and futility and delta pruning in quiescence using SEE. It further applies LMR, various fractional extensions and considers killer- and history heuristics to order moves. Evaluation is based on material, piece-square tables, pawn structure, mobility and center control in conjunction with king safety. Pawny is able to probe 3-5 men Gaviota Tablebases.
Pawny logo [1]

Pawny 1.0

Forum Posts

2009

• New open source engine called "Pawny" by Graham Banks, CCC, September 03, 2009
• Pawny - new version (0.11) by Mincho Georgiev, CCC, September 15, 2009

2010 ...

• Pawny 0.15 is out by Mincho Georgiev, CCC, January 01, 2010
• Pawny 0.1.6 by Mincho Georgiev, CCC, February 13, 2010
• Pawny - Updated by Mincho Georgiev, CCC, March 02, 2010
• Pawny 0.2 by Mincho Georgiev, CCC, July 01, 2010
• Pawny 0.2.1 by Mincho Georgiev, CCC, February 01, 2011
• Pawny updated by Mincho Georgiev, CCC, November 24, 2011
• New Pawny by Gabor Szots, CCC, May 31, 2013

2015 ...

• Pawny 1.1 by Graham Banks, CCC, June 14, 2015

External Links

• Pawny's Homepage
  Pawny's Version History
• Pawny in CCRL 40/40

References

1. ^ Pawny's Homepage
2. ^ Pawny's Version History

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