Jonathan+Schaeffer

a Canadian computer games researcher, professor in computing science at the University of Alberta, [|Edmonton], Alberta, with a Ph.D. from University of Waterloo in 1986. He is author of the chess programs Planner, Prodigy and Phoenix. In 1983, Schaeffer proposed the History Heuristic.
 * Home * People * Jonathan Schaeffer**
 * [[image:EPSchaeffer.jpg link="http://www.flickr.com/photos/gbachelier/sets/72157613164343197/"]] ||~  || **Jonathan Herbert Schaeffer**,

Beside research on games, search algorithms and parallel search, Jonathan Schaeffer is best known as primary author of the World Man-Machine Checkers Champion [|Chinook], solving Checkers in 2007. Schaeffer further works on [|poker-playing programs], the [|Texas hold 'em] program [|Polaris] and the commercial //Poker Academy//. || toc =Photos= Front: Paul Lu, Jonathan Schaeffer, Steve Sutphen ||
 * Jonathan Schaeffer ||~  ||^   ||
 * [[image:schaeffer02.jpg width="480" link="http://www.chessbase.com/newsdetail.asp?newsid=3997"]] ||
 * Blitz against child prodigy [|Murugan Tiruchelvam] in London 2000 ||
 * [[image:group_photo_cropped.JPG width="480" height="338" link="http://webdocs.cs.ualberta.ca/~chinook/authors/"]] ||
 * [|Chinook] team:: Back: Yngvi Björnsson, Neil Burch, Rob Lake, Joe Culberson
 * [|Chinook] team:: Back: Yngvi Björnsson, Neil Burch, Rob Lake, Joe Culberson

=See also=
 * Kasparov versus Deep Thought 1989 documentary

=Books= >
 * Jonathan Schaeffer (**1997, 2009**). //[|One Jump Ahead] Challenging Human Supremacy in Checkers//, Springer, ISBN 0-387-94930-5, ISBN 978-0-387-76575-4

=Quotes= by Jonathan Schaeffer

Planner
//[|One Jump Ahead]//, pp. 7 :



||

Prodigy
//[|One Jump Ahead]//, pp. 8 :

Waterloo
//[|One Jump Ahead]//, pp. 8 :

Edmonton
//[|One Jump Ahead]//, pp. 9 :



Zobrist Hashing
Jonathan Schaeffer on Zobrist Hashing :

WCCC 1986
//[|One Jump Ahead]//, pp. 9 :

Chess and AI
Jonathan Schaeffer on //The Role of Chess in Artificial Intelligence// :

=Selected Publications=

1980 ...

 * Jonathan Schaeffer (**1980**). //Long-Range Planning in Computer Chess//. Master's thesis, Department of Computer Science, University of Waterloo
 * Greg Bakker, Jim Jonkman, Jonathan Schaeffer, Tom Schultz (**1982**). //VLSI Implementation of a Chess Legal Move Generator//. EE755S-1, University of Waterloo
 * Jonathan Schaeffer, Patrick A.D. Powell, Jim Jonkman (**1983**). //[|A VLSI legal move generator for the game of chess]//. in [|Randal Bryant] (eds.) [|Third Caltech Conference on Very Large Scale Integration]
 * Jonathan Schaeffer (**1983**). //The History Heuristic//. ICCA Journal, Vol. 6, No. 3
 * Jonathan Schaeffer (**1983**). //Long-Range Planning in Computer Chess//. Proceedings of the Annual ACM Conference
 * 1984**
 * Jonathan Schaeffer (**1984**). //The Relative Importance of Knowledge//. ICCA Journal, Vol. 7, No. 3
 * Tim Breitkreutz, Jonathan Schaeffer (**1984**). //Computer vs Computer via Computer//. ICCA Journal, Vol. 7, No. 4

1985 ...

 * Jonathan Schaeffer, Tony Marsland (**1985**). //The Utility of Expert Knowledge//. IJCAI 1985
 * Alexander Reinefeld, Jonathan Schaeffer, Tony Marsland (**1985**). //Information Acquisition in Minimal Window Search.// IJCAI 1985
 * Jonathan Schaeffer (**1985**). //Lionel Moser: An Experiment in Distributed Game Tree Searching.// ICCA Journal, Vol. 8, No. 2, review
 * Alexander Reinefeld, Tony Marsland, Jonathan Schaeffer (**1985**). //Is Best First Search Really Best?// TR 85-16, University of Alberta.
 * [|William Ward Armstrong], Tony Marsland, Marius Olafsson, Jonathan Schaeffer (**1985**). //[|Solving Equations of Motion on a Virtual Tree Machine]//. Second Conference on Parallel Processing for Scientific Computing
 * 1986**
 * Jonathan Schaeffer (**1986**). //Experiments in Search and Knowledge//. Ph.D. Thesis, University of Waterloo. Reprinted as TR 86-12, University of Alberta
 * Jonathan Schaeffer (**1986**). //Improved Parallel Alpha-Beta Searching//. ACM/IEEE Fall Joint Computer Conference
 * Tony Marsland, Marius Olafsson, Jonathan Schaeffer (**1986**). //Multiprocessor Tree-Search Experiments//. Advances in Computer Chess 4
 * [|William Ward Armstrong], Tony Marsland, Marius Olafsson, Jonathan Schaeffer, Steve Sutphen (**1986**). //Large Grained Parallelism at the University of Alberta//. In Large Grained Parallelism Workshop, 1986.
 * 1987**
 * Jonathan Schaeffer (**1987**). //Experiments in Distributed Game-Tree Searching.// TR 87-2, University of Alberta.
 * Jonathan Schaeffer (**1987**). //Speculative Computing//. ICCA Journal, Vol. 10, No. 3
 * Tony Marsland, Alexander Reinefeld, Jonathan Schaeffer (**1987**). //Low Overhead Alternatives to SSS*.// [|Artificial Intelligence], Vol. 31, No. 2
 * 1988**
 * Jonathan Schaeffer (**1988**). //Learning from (other's) experience.// Proceedings of the AAAI Spring Symposium on Computer Game Playing
 * Norbert Klingbeil, Jonathan Schaeffer (**1988**). //Search Strategies for Conspiracy Numbers.// Canadian Artificial Intelligence Conference
 * Mikhail Donskoy, Jonathan Schaeffer (**1988**). //Report on the 1st Soviet Computer-Chess Championship or re-awakening a sleeping giant//. ICCA Journal, Vol. 11, Nos. 2/3 » First Soviet Computer-Chess Championship 1988
 * 1989**
 * Mikhail Donskoy, Jonathan Schaeffer (**1989**). //Perspectives on Falling from Grace//. Workshop on New Directions in Game-Tree Search, [|pdf], revised version published (**1990**). in Computers, Chess, and Cognition
 * Jonathan Schaeffer (**1989**). //Distributed Game-Tree Searching//. [|Journal of Parallel and Distributed Computing], Vol. 6, No. 2
 * Jonathan Schaeffer (**1989**). //Comment on 'Distributed Game-Tree Search'.// ICCA Journal, Vol. 12, No. 4
 * Jonathan Schaeffer (**1989**). //Conspiracy Numbers.// Advances in Computer Chess 5, also published (1990) in [|Artificial Intelligence], Vol. 43, No. 1
 * Jonathan Schaeffer (**1989**). //The History Heuristic and Alpha-Beta Search Enhancements in Practice//. IEEE TPAMI, Vol. 11, No. 11, [|zipped ps], [|pdf]

1990 ...
> Jonathan Schaeffer (**1990**). //1989 World Computer Chess Championship.// Computers, Chess, and Cognition > Mikhail Donskoy, Jonathan Schaeffer (**1990**). //Perspectives on Falling from Grace.// Computers, Chess, and Cognition > Jonathan Schaeffer, Norman Treloar, Paul Lu, Rob Lake (**1993**). //Man Versus Machine for the World Checkers Championship//. ICCA Journal, Vol. 16, No. 2
 * Jonathan Schaeffer (**1990**). //Conspiracy Numbers//. [|Artificial Intelligence], Vol. 43, No. 1
 * Norbert Klingbeil, Jonathan Schaeffer (**1990**). //Empirical Results with Conspiracy Numbers.// Computational Intelligence, Vol. 6
 * Jonathan Schaeffer (**1990**). //A Rejoinder to a Comment on 'Distributed Game-Tree Search'.// ICCA Journal, Vol. 13, No. 1
 * Tony Marsland, Jonathan Schaeffer (eds.) (**1990**). Computers, Chess, and Cognition
 * Peter Jansen, Jonathan Schaeffer (**1990**). //Seconding a Grandmaster//. ICCA Journal, Vol 13, No. 1
 * Michael George, Jonathan Schaeffer (**1990**). //Chunking for Experience//. ICCA Journal, Vol. 13, No. 3
 * 1991**
 * Jonathan Schaeffer (**1991**). //Checkers, a Preview of what will Happen in Chess?// ICCA Journal, Vol. 14, No. 2
 * Robert Levinson, Feng-hsiung Hsu, Tony Marsland, Jonathan Schaeffer, David Wilkins (**1991**). //The Role of Chess in Artificial Intelligence Research//. IJCAI 1991, [|pdf], also in ICCA Journal, Vol. 14, No. 3, [|pdf]
 * Jonathan Schaeffer, Joe Culberson, Norman Treloar, Brent Knight, Paul Lu, Duane Szafron (**1991**). //Checkers Program to Challenge for World Championship//. SIGART Bulletin, Vol. 2, No. 2, pp. 3-5.
 * Jonathan Schaeffer, Joe Culberson, Norman Treloar, Brent Knight, Paul Lu, Duane Szafron (**1991**). //Reviving the Game of Checkers//. Heuristic Programming in AI 2
 * Michael George, Jonathan Schaeffer (**1991**). //Chunking for Experience//. Advances in Computer Chess 6
 * 1992**
 * Jonathan Schaeffer, Joe Culberson, Norman Treloar, Brent Knight, Paul Lu, Duane Szafron (**1992**). //A World Championship Caliber Checkers Program//. [|Artificial Intelligence], Vol. 53, Nos. 2-3,[|ps]
 * Herbert Simon, Jonathan Schaeffer (**1992**). //The Game of Chess//. in [|Handbook of Game Theory with Economic applications], [|ps]
 * 1993**
 * Jonathan Schaeffer, Norman Treloar, Paul Lu, Rob Lake (**1993**). //[|Man Versus Machine for the World Checkers Championship]//. [|AI Magazine], Vol. 14, No. 2 » WCCC 1992 - Workshop
 * Jonathan Schaeffer, Paul Lu, Duane Szafron, Rob Lake (**1993**). //A Re-examination of Brute-force Search//. Intelligent Games: Planning and Learning. (AAAI 1993 Report FS9302, Proccedings of the AAAI Fall Symposiuem, eds. S. Epstein and R. Levinson), AAAI Press
 * Rob Lake, Jonathan Schaeffer, Paul Lu (**1993**). //Solving Large Retrograde Analysis Problems Using a Network of Workstations//. TR 93-13, [|ps]
 * 1994**
 * Lisa Lister, Jonathan Schaeffer (**1994**). //An Analysis of the Conspiracy Numbers Algorithm//. [|Computers & Mathematics with Applications] Vol. 27, No. 1, [|Elsevier], [|pdf]
 * Rob Lake, Jonathan Schaeffer, Paul Lu (**1994**). //Solving Large Retrograde Analysis Problems Using a Network of Workstations//. Advances in Computer Chess 7
 * Aske Plaat, Jonathan Schaeffer, Wim Pijls, Arie de Bruin (**1994**). //[|Nearly Optimal Minimax Tree Search?]// Technical Report, University of Alberta
 * Aske Plaat, Jonathan Schaeffer, Wim Pijls, Arie de Bruin (**1994**). //[|SSS* = a-b TT]//. TR-CS-94-17, University of Alberta
 * Aske Plaat, Jonathan Schaeffer, Wim Pijls, Arie de Bruin (**1994**). //[|A New Paradigm for Minimax Search]//. TR 94-18

1995 ...

 * Ken Thompson, Jonathan Schaeffer (**1995**). //Tributes to Tony Scherzer//. ICCA Journal, Vol. 18, No. 1
 * Aske Plaat, Jonathan Schaeffer, Wim Pijls, Arie de Bruin (**1995**). //Best-First Fixed Depth Game Tree Search in Practice.// IJCAI 1995, [|ps]
 * 1996**
 * Aske Plaat, Jonathan Schaeffer, Wim Pijls, Arie de Bruin (**1996**). //Best-First Fixed-Depth Minimax Algorithms.// [|Artificial Intelligence], Vol. 87, Nos. 1-2, [|pdf]
 * Aske Plaat, Jonathan Schaeffer, Wim Pijls, Arie de Bruin (**1996**). //Exploiting Graph Properties of Game Trees.// [|13th National Conference on Artificial Intelligence] ([|AAAI-96]), Vol. 1, [|ps] » ETC
 * Jonathan Schaeffer, Aske Plaat (**1996**). //New Advances in Alpha-Beta Searching//. ACM 1996 Computer Science Conference
 * Aske Plaat, Jonathan Schaeffer, Wim Pijls, Arie de Bruin (**1996**). //An Algorithm Faster than NegaScout and SSS* in Practice//.
 * Jonathan Schaeffer, Rob Lake (**1996**). //Solving the Game of Checkers//. [|Games of No Chance] edited by Richard J. Nowakowski, [|pdf]
 * Jonathan Schaeffer, Rob Lake, Paul Lu, Martin Bryant (**1996**). //Chinook: The World Man-Machine Checkers Champion//. AI Magazine, Vol. 17, No. 1, pp. 21-29. ISSN 0738-4602.
 * Mark Brockington, Jonathan Schaeffer (**1996**). //The APHID Parallel αβ Search Algorithm//. TR 96-07, University of Alberta
 * Joe Culberson, Jonathan Schaeffer (**1996**). //Searching with Pattern Databases//. [|Canadian Conference on AI 1996], [|pdf]
 * 1997**
 * Yngvi Björnsson, Tony Marsland, Jonathan Schaeffer, Andreas Junghanns (**1997**). //Searching with Uncertainty Cut-offs.// ICCA Journal, Vol. 20, No. 1, [|pdf preprint]
 * Yngvi Björnsson, Tony Marsland, Jonathan Schaeffer, Andreas Junghanns (**1997**). //Searching with Uncertainty Cut-offs//. Advances in Computer Chess 8
 * Andreas Junghanns, Jonathan Schaeffer (**1997**). //Search versus knowledge in game-playing programs revisited//. IJCAI 1997
 * Andreas Junghanns, Jonathan Schaeffer, Mark Brockington, Yngvi Björnsson, Tony Marsland (**1997**). //Diminishing Returns for Additional Search in Chess.// Advances in Computer Chess 8, [|pdf]
 * Mark Brockington, Jonathan Schaeffer (**1997**). //APHID Game-Tree Search//. Advances in Computer Chess 8
 * Jonathan Schaeffer (**1997**). //One Jump Ahead: Challenging Human Supremacy in Checkers//. Springer
 * Jonathan Schaeffer, Aske Plaat (**1997**). //Kasparov versus Deep Blue: The Rematch//. ICCA Journal, Vol. 20, No. 2
 * 1998**
 * Jonathan Schaeffer (**1998**). //A Database of Databases//, //**Bewaar Me**//, Jaap van den Herik (ed.), Drukkerij Van Spijk B.V., The Netherlands, pp. 157-161. A tribute to the late Bob Herschberg, [|ps]
 * Andreas Junghanns, Jonathan Schaeffer (**1998**). //[|Relevance Cuts: Localizing the Search.]//. CG 1998
 * Jonathan Schaeffer (**1998**). //Checkers: A Preview of What Will Happen in Chess?// University of Alberta,[|ps]
 * Joe Culberson, Jonathan Schaeffer (**1998**). //Pattern databases//. [|Computational Intelligence], Vol. 14, No. 3, [|pdf]
 * Darse Billings, Denis Papp, Jonathan Schaeffer, Duane Szafron (**1998**). //[|Poker as a Testbed for Machine Intelligence Research]//. Department of Computing Science, University of Alberta
 * Darse Billings, Denis Papp, Jonathan Schaeffer, Duane Szafron (**1998**). //Opponent Modeling in Poker//. AAAI/IAAI 1998,[|pdf]
 * 1999**
 * Aske Plaat, Jonathan Schaeffer, Wim Pijls, Arie de Bruin (**1999**). A Minimax Algorithm better than SSS*. [|Artificial Intelligence], Vol. 87
 * Mark Brockington, Jonathan Schaeffer (**1999**). //APHID: Asynchronous Parallel Game-Tree Search//. University of Alberta
 * John Romein, Aske Plaat, Henri Bal, Jonathan Schaeffer (**1999**). //Transposition Table Driven Work Scheduling in Distributed Search//. AAAI-99, [|pdf]

2000 ...

 * Jonathan Schaeffer (**2000**). //Search Ideas in Chinook.// Games in AI Research, [|ps]
 * Andreas Junghanns, Jonathan Schaeffer (**2000**). //Sokoban: A Challenging Single-Agent Search Problem.// Games in AI Research
 * Jonathan Schaeffer (**2000**). //The GAMES group at the University of Alberta//. 5th Computer Olympiad Workshop
 * Jonathan Schaeffer (**2000**). //The Games Computers (and People) Play//. Advances in Computers 50, [|Marvin Zelkowitz] editor, Academic Press, [|ps]
 * 2001**
 * Jonathan Schaeffer (**2001**). //Technology Transfer from one High-performance Search Engine to Another.// ICGA Journal, Vol. 24, No. 3
 * Jonathan Schaeffer (**2001**). //A Gamut of Games//. AI Magazine, Vol. 22, No. 3, [|pdf].
 * Jonathan Schaeffer, Markian Hlynka, Vili Jussila (**2001**). //Temporal Difference Learning Applied to a High-Performance Game-Playing Program//. IJCAI 2001
 * Jonathan Schaeffer, Aske Plaat, Andreas Junghanns (**2001**). //Unifying Single-agent and Two-player search.// Information Sciences, Vol. 135, [|ps]
 * Andreas Junghanns, Jonathan Schaeffer (**2001**). //Sokoban: Improving the Search with Relevance Cuts//. Theoretical Computer Science, Vol. 252, No. 1-2,[|pdf]
 * Jonathan Schaeffer (**2001**). //[|Technology Transfer from One High-Performance Search Engine to Another]//. ICGA Journal, Vol. 24, No. 3 » Checkers
 * 2002**
 * Darse Billings, Aaron Davidson, Jonathan Schaeffer, Duane Szafron (**2002**). //The Challenge of Poker//. [|Artificial Intelligence], Vol. 134, No. 1-2, [|pdf]
 * John Romein, Henri Bal, Jonathan Schaeffer, Aske Plaat (**2002**). //A Performance Analysis of Transposition-Table-Driven Scheduling in Distributed Search//. IEEE TPDS, Vol. 13, No. 5 [|pdf]
 * Akihiro Kishimoto, Jonathan Schaeffer (**2002**). //Distributed Game-Tree Search Using Transposition Table Driven Work Scheduling//. 31st International Conference on Parallel Processing (ICPP'02), IEEE Computer Society Press
 * Akihiro Kishimoto, Jonathan Schaeffer (**2002**). //Transposition Table Driven Work Scheduling in Distributed Game-Tree Search//. Fifteenth Canadian Conference on Artificial Intelligence (AI'2002), Vol. 2338 of Lecture Notes in Artificial Intelligence, [|Springer]
 * Jonathan Schaeffer (**2002**). //Solving the Games People Play//. Invited Lecture, 7th Computer Olympiad Workshop
 * Adi Botea, Martin Müller, Jonathan Schaeffer (**2002**). //[|Using Abstraction for Planning in Sokoban]//. CG 2002
 * Jonathan Schaeffer, Jaap van den Herik (**2002**). //Games, Computers, and Artificial Intelligence//. [|Artificial Intelligence], Vol. 134, [|pdf]
 * 2003**
 * Jonathan Schaeffer (**2003**). //The First FIDE Man-Machine World Chess Championship//. [|pdf] » Kasparov versus Deep Junior 2003
 * Jonathan Schaeffer, Yngvi Björnsson, Neil Burch, Rob Lake, Paul Lu, Steve Sutphen (**2003**). //Building the Checkers 10-Piece Endgame Databases.// Advances in Computer Games 10. [|pdf]
 * Darse Billings, Neil Burch, Aaron Davidson, Robert Holte, Jonathan Schaeffer, Terence Schauenberg, Duane Szafron (**2003**). //Approximating Game-Theoretic Optimal Strategies for Full-scale Poker//. IJCAI 2003, [|pdf]
 * 2004**
 * Adi Botea, Martin Müller, Jonathan Schaeffer (**2004**). //Near Optimal Hierarchical Path-Finding//. In Journal of Game Development, volume 1, issue 1, 7-28, [|pdf]
 * Adi Botea, Markus Enzenberger, Martin Müller, Jonathan Schaeffer (**2004**). //Macro-FF//. In Booklet of 4th International Planning Competition, 15-17.
 * Martin Müller, Markus Enzenberger, Jonathan Schaeffer (**2004**). //Temperature Discovery Search//. [|AAAI 2004], [|pdf]
 * Darse Billings, Aaron Davidson, Terence Schauenberg, Neil Burch, Michael Bowling, Robert Holte, Jonathan Schaeffer, Duane Szafron (**2004**). //[|Game-Tree Search with Adaptation in Stochastic Imperfect-Information Games]//. CG 2004
 * Thomas Hauk, Michael Buro, Jonathan Schaeffer (**2004**). //[|Rediscovering *-Minimax Search]//. CG 2004, [|pdf]
 * Thomas Hauk, Michael Buro, Jonathan Schaeffer (**2004**). //[|*-Minimax Performance in Backgammon]//. CG 2004
 * Markian Hlynka, Jonathan Schaeffer (**2004**). //Pre-Searching//. ICGA Journal, Vol. 27, No. 4

2005 ...

 * Jonathan Schaeffer (**2005**). //Solving Checkers: First Result//. ICGA Journal, Vol. 28, No. 1
 * Jonathan Schaeffer, Yngvi Björnsson, Neil Burch, Akihiro Kishimoto, Martin Müller, Rob Lake, Paul Lu, Steve Sutphen (**2005**). //Solving Checkers//. IJCAI 2005
 * Ariel Felner, Uzi Zahavi, Jonathan Schaeffer, Robert Holte (**2005**). //Dual Lookups in Pattern Databases//. IJCAI 2005, [|pdf]
 * Adi Botea, Markus Enzenberger, Martin Müller, Jonathan Schaeffer (**2005**). //Macro-FF: Improving AI Planning with Automatically Learned Macro-Operators//. [|Journal of Artificial Intelligence Research], Vol. 24, [|pdf]
 * Yngvi Björnsson, Markus Enzenberger, Robert Holte, Jonathan Schaeffer (**2005**). //Fringe Search: Beating A* at Pathfinding on Game Maps//. IEEE CIG, [|pdf]
 * Yngvi Björnsson, Jonathan Schaeffer, Nathan Sturtevant (**2005**). //[|Partial Information Endgame Databases]//. Advances in Computer Games 11, [|pdf], [|pdf]
 * Markian Hlynka, Jonathan Schaeffer (**2005**). //[|Automatic Generation of Search Engines]//. Advances in Computer Games 11
 * 2006**
 * Graham Kendall, Jonathan Schaeffer (**2006**). //[|Poker]//. ICGA Journal, Vol. 29, No. 3
 * 2007**
 * Jonathan Schaeffer, Neil Burch, Yngvi Björnsson, Akihiro Kishimoto, Martin Müller, Rob Lake, Paul Lu, Steve Sutphen (**2007**). //[|Checkers is Solved]//. [|Science], Vol. 317, no. 5844
 * Vadim Bulitko, Yngvi Björnsson, Mitja Luvstrek, Jonathan Schaeffer, Sverrir Sigmundarson (**2007**). //Dynamic Control in Path-Planning with Real-Time Heuristic Search.// ICAPS'07, [|pdf]
 * 2008**
 * Uzi Zahavi, Ariel Felner, Robert Holte, Jonathan Schaeffer (**2008**). //Duality in permutation state spaces and the dual search algorithm//. [|Artificial Intelligence 172]
 * Mehdi Samadi, Ariel Felner, Jonathan Schaeffer (**2008**). //Learning from Multiple Heuristics//. [|AAAI 2008]
 * 2009**
 * Nathan Sturtevant, Ariel Felner, Max Barrer, Jonathan Schaeffer, Neil Burch (**2009**). //Memory-Based Heuristics for Explicit State Spaces//. IJCAI 2009, [|pdf]

2010 ...

 * Ariel Felner, Carsten Moldenhauer, Nathan Sturtevant, Jonathan Schaeffer (**2010**). //Single-Frontier Bidirectional Search//. [|AAAI 2010], [|pdf], [|pdf]
 * Richard Anthony Valenzano, Nathan Sturtevant, Jonathan Schaeffer, Karen Buro, Akihiro Kishimoto (**2010**). //Simultaneously Searching with Multiple Settings: An Alternative to Parameter Tuning for Suboptimal Single-Agent Search Algorithms//. [|ICAPS 2010], [|pdf]
 * Mike Carbonaro, Duane Szafron, Maria Cutumisu, Jonathan Schaeffer (**2010**). //Computer-game construction: A gender-neutral attractor to Computing Science//. [|Computers & Education 55(3)], [|pdf]
 * Robert Holte, Jonathan Schaeffer, Ariel Felner (**2010**). //Mechanical Generation of Admissible Heuristics.// Chapter 3 in //[|Heuristics, Probability, and Causality]: A Tribute to Judea Pearl//, edited by [|Rina Dechter], [|Hector Geffner], and [|Joseph Y. Halpern], [|pdf]
 * Meir Goldenberg, Ariel Felner, Nathan Sturtevant, Jonathan Schaeffer  (**2010**). //Portal-Based True-Distance Heuristics for Path Finding//. [|SOCS-10], [|pdf]
 * 2011**
 * Mesut Kirci, Nathan Sturtevant, Jonathan Schaeffer (**2011**). //A GGP Feature Learning Algorithm//. [|KI 25(1)], [|pdf] » General Game Playing, Learning
 * Ariel Felner, Uzi Zahavi, Robert Holte, Jonathan Schaeffer, Nathan Sturtevant, Zhifu Zhang (**2011**). //Inconsistent Heuristics in Theory and Practice//. [|Artificial Intelligence], [|pdf]
 * 2012**
 * Meir Goldenberg, Ariel Felner, Roni Stern, Guni Sharon, Jonathan Schaeffer (**2012**). //A* Variants for Optimal Multi-Agent Pathfinding//. SOCS 2012, [|pdf]
 * 2014**
 * Meir Goldenberg, Ariel Felner, Roni Stern, Guni Sharon, Nathan Sturtevant, Robert C. Holte, Jonathan Schaeffer (**2014**). //Enhanced Partial Expansion A*//. [|Journal of Artificial Intelligence Research], Vol. 50, [|pdf]

=Forum Posts=
 * [|A taste of things to come?] by Jonathan Schaeffer, rgc, September 02, 1990 » Checkers
 * [|Re: Hash tablesClash!!!-What happens next?] by Jonathan Schaeffer, rgc, March 17, 1994 » Zobrist Hashing
 * [|Silicon Graphics World Checkers Championship - day 3] by Jonathan Schaeffer, rgc, August 18, 1994
 * [|Checkers Championship - additional information] by Jonathan Schaeffer, rgc, August 20, 1994
 * [|Deep Blue news] by Jonathan Schaeffer, CCC, September 23, 1997 » Deep Blue

=External Links=
 * [|Jonathan Schaeffer's homepage]
 * [|Jonathan Schaeffer from Wikipedia]
 * [|Jonathan Schaeffer's ICGA Tournaments]
 * [|Canadian Chess - Biographies - Jonathan Schaeffer]
 * [|1983 | Waking up to change] in [|Chris Redmond and Simon the Troll] (**1998**). //[|Water Under the Bridge]//. University of Waterloo » VLSI Move Generation » VLSI Move Generation

Musings
> [|Chinook: Twenty Years Later], August 22, 2012 > [|The Worst (Research) Day of My Life], August 27, 2012
 * [|Academic (a)Musings] by Jonathan Schaeffer

Chinook

 * [|Chinook from Wikipedia]
 * [|Chinook - disambiguation page from Wikipedia]
 * [|Chinook wind from Wikipedia]
 * [|500 billion billion moves later, computers solve checkers] from ChessBase news, July 19, 2007

Misc

 * [|AIs Have Mastered Chess. Will Go Be Next?] by Jonathan Schaeffer, Martin Müller & Akihiro Kishimoto, IEEE Spectrum, June 25, 2014

=References= =What links here?= include page="Jonathan Schaeffer" component="backlinks" limit="260"
 * Up one level**