PolarChess
The case of the bi-polar chess queen [1] PolarChess,
a WinBoard compliant chess engine, written at 70° 4′ 24″ N, 3° 30′ 40″ north the Arctic Circle in Vadsø [2], Finnmark country, Norway by Odd Gunnar Malin in C++, first released in November 2001. PolarChess, version 1.2 as open source, includes the PolarEngine package with search and evaluation decoupled from the board representation. It has a 0x88 board, and applies alpha-beta with transposition table and null move pruning inside an iterative deepening framework with aspiration windows. Checks, pawn moves to the 7th rank, and mate threatening moves are extended, killer- and history heuristic help to order moves. Evaluation counts material aware of the bishop pair and trade bonuses for pieces if ahead and pawns if behind, and positionally considers pawn structure utilizing a pawn hash table, passed pawns, mobility, rook on open file, bad bishop, and pawn shield for king safety to name the most important terms.
PolarChess played the CCT4 and CCT5 tournaments.
See also
Forum Posts
- PolarChess by Odd Gunnar Malin, Winboard Forum, November 26, 2001
- PolarChess by Odd Gunnar Malin, Winboard Forum, December 19, 2001
External Links
Chess Engine
Misc
Pole and polar from Wikipedia Polar coordinate system from Wikipedia Polar set from Wikipedia Polar question from Wikipedia
- Polar circle from Wikipedia
- Polaris
- Polar Star (novel) from Wikipedia
- Anne Paceo’s Circles - Toundra, Marseille Jazz des Cinq Continents, July 21, 2015 , YouTube Video
Anne Paceo, Leïla Martial, Christophe Panzani, Tony Paeleman
References
- ↑ THE CASE OF THE BI-POLAR CHESS QUEEN: A Short Story | Flickr - Fotosharing! by Robert Huffstutter
- ↑ Vadsø, Norway - Sunrise, sunset, dawn and dusk times for the whole year - Gaisma
- ↑ CCT4 - PGN-Download hosted by Volker Richey
- ↑ PolarChess just beat Warlord by William H. Rogers, CCC, January 20, 2002