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ZUGZWANGS in CHESS STUDIES G.Mcc. Haworth,1 H.M.J.F. Van Der
See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/290629887 Zugzwangs in Chess Studies Article in ICGA journal · June 2011 DOI: 10.3233/ICG-2011-34205 CITATION READS 1 2,142 3 authors: Guy McCrossan Haworth Harold M.J.F. Van der Heijden University of Reading Gezondheidsdienst voor Dieren 119 PUBLICATIONS 354 CITATIONS 49 PUBLICATIONS 1,232 CITATIONS SEE PROFILE SEE PROFILE Eiko Bleicher 7 PUBLICATIONS 12 CITATIONS SEE PROFILE Some of the authors of this publication are also working on these related projects: Chess Endgame Analysis View project The Skilloscopy project View project All content following this page was uploaded by Guy McCrossan Haworth on 23 January 2017. The user has requested enhancement of the downloaded file. 82 ICGA Journal June 2011 NOTES ZUGZWANGS IN CHESS STUDIES G.McC. Haworth,1 H.M.J.F. van der Heijden and E. Bleicher Reading, U.K., Deventer, the Netherlands and Berlin, Germany ABSTRACT Van der Heijden’s ENDGAME STUDY DATABASE IV, HHDBIV, is the definitive collection of 76,132 chess studies. The zugzwang position or zug, one in which the side to move would prefer not to, is a frequent theme in the literature of chess studies. In this third data-mining of HHDBIV, we report on the occurrence of sub-7-man zugs there as discovered by the use of CQL and Nalimov endgame tables (EGTs). We also mine those Zugzwang Studies in which a zug more significantly appears in both its White-to-move (wtm) and Black-to-move (btm) forms. We provide some illustrative and extreme examples of zugzwangs in studies. -
11 Triple Loyd
TTHHEE PPUUZZZZLLIINNGG SSIIDDEE OOFF CCHHEESSSS Jeff Coakley TRIPLE LOYDS: BLACK PIECES number 11 September 22, 2012 The “triple loyd” is a puzzle that appears every few weeks on The Puzzling Side of Chess. It is named after Sam Loyd, the American chess composer who published the prototype in 1866. In this column, we feature positions that include black pieces. A triple loyd is three puzzles in one. In each part, your task is to place the black king on the board.to achieve a certain goal. Triple Loyd 07 w________w áKdwdwdwd] àdwdwdwdw] ßwdwdw$wd] ÞdwdRdwdw] Ýwdwdwdwd] Üdwdwdwdw] Ûwdwdpdwd] Údwdwdwdw] wÁÂÃÄÅÆÇÈw Place the black king on the board so that: A. Black is in checkmate. B. Black is in stalemate. C. White has a mate in 1. For triple loyds 1-6 and additional information on Sam Loyd, see columns 1 and 5 in the archives. As you probably noticed from the first puzzle, finding the stalemate (part B) can be easy if Black has any mobile pieces. The black king must be placed to take away their moves. Triple Loyd 08 w________w áwdwdBdwd] àdwdRdwdw] ßwdwdwdwd] Þdwdwdwdw] Ýwdw0Ndwd] ÜdwdPhwdw] ÛwdwGwdwd] Údwdw$wdK] wÁÂÃÄÅÆÇÈw Place the black king on the board so that: A. Black is in checkmate. B. Black is in stalemate. C. White has a mate in 1. The next triple loyd sets a record of sorts. It contains thirty-one pieces. Only the black king is missing. Triple Loyd 09 w________w árhbdwdwH] àgpdpdw0w] ßqdp!w0B0] Þ0ndw0PdN] ÝPdw4Pdwd] ÜdRdPdwdP] Ûw)PdwGPd] ÚdwdwIwdR] wÁÂÃÄÅÆÇÈw Place the black king on the board so that: A. -
Learning Long-Term Chess Strategies from Databases
Mach Learn (2006) 63:329–340 DOI 10.1007/s10994-006-6747-7 TECHNICAL NOTE Learning long-term chess strategies from databases Aleksander Sadikov · Ivan Bratko Received: March 10, 2005 / Revised: December 14, 2005 / Accepted: December 21, 2005 / Published online: 28 March 2006 Springer Science + Business Media, LLC 2006 Abstract We propose an approach to the learning of long-term plans for playing chess endgames. We assume that a computer-generated database for an endgame is available, such as the king and rook vs. king, or king and queen vs. king and rook endgame. For each position in the endgame, the database gives the “value” of the position in terms of the minimum number of moves needed by the stronger side to win given that both sides play optimally. We propose a method for automatically dividing the endgame into stages characterised by different objectives of play. For each stage of such a game plan, a stage- specific evaluation function is induced, to be used by minimax search when playing the endgame. We aim at learning playing strategies that give good insight into the principles of playing specific endgames. Games played by these strategies should resemble human expert’s play in achieving goals and subgoals reliably, but not necessarily as quickly as possible. Keywords Machine learning . Computer chess . Long-term Strategy . Chess endgames . Chess databases 1. Introduction The standard approach used in chess playing programs relies on the minimax principle, efficiently implemented by alpha-beta algorithm, plus a heuristic evaluation function. This approach has proved to work particularly well in situations in which short-term tactics are prevalent, when evaluation function can easily recognise within the search horizon the con- sequences of good or bad moves. -
Fundamental Endings CYRUS LAKDAWALA
First Steps : Fundamental Endings CYRUS LAKDAWALA www.everymanchess.com About the Author Cyrus Lakdawala is an International Master, a former National Open and American Open Cham- pion, and a six-time State Champion. He has been teaching chess for over 30 years, and coaches some of the top junior players in the U.S. Also by the Author: Play the London System A Ferocious Opening Repertoire The Slav: Move by Move 1...d6: Move by Move The Caro-Kann: Move by Move The Four Knights: Move by Move Capablanca: Move by Move The Modern Defence: Move by Move Kramnik: Move by Move The Colle: Move by Move The Scandinavian: Move by Move Botvinnik: Move by Move The Nimzo-Larsen Attack: Move by Move Korchnoi: Move by Move The Alekhine Defence: Move by Move The Trompowsky Attack: Move by Move Carlsen: Move by Move The Classical French: Move by Move Larsen: Move by Move 1...b6: Move by Move Bird’s Opening: Move by Move Petroff Defence: Move by Move Fischer: Move by Move Anti-Sicilians: Move by Move Opening Repertoire ... c6 First Steps: the Modern 3 Contents About the Author 3 Bibliography 5 Introduction 7 1 Essential Knowledge 9 2 Pawn Endings 23 3 Rook Endings 63 4 Queen Endings 119 5 Bishop Endings 144 6 Knight Endings 172 7 Minor Piece Endings 184 8 Rooks and Minor Pieces 206 9 Queen and Other Pieces 243 4 Introduction Why Study Chess at its Cellular Level? A chess battle is no less intense for its lack of brevity. Because my messianic mission in life is to make the chess board a safer place for students and readers, I break the seal of confessional and tell you that some students consider the idea of enjoyable endgame study an oxymoron. -
Proposal to Encode Heterodox Chess Symbols in the UCS Source: Garth Wallace Status: Individual Contribution Date: 2016-10-25
Title: Proposal to Encode Heterodox Chess Symbols in the UCS Source: Garth Wallace Status: Individual Contribution Date: 2016-10-25 Introduction The UCS contains symbols for the game of chess in the Miscellaneous Symbols block. These are used in figurine notation, a common variation on algebraic notation in which pieces are represented in running text using the same symbols as are found in diagrams. While the symbols already encoded in Unicode are sufficient for use in the orthodox game, they are insufficient for many chess problems and variant games, which make use of extended sets. 1. Fairy chess problems The presentation of chess positions as puzzles to be solved predates the existence of the modern game, dating back to the mansūbāt composed for shatranj, the Muslim predecessor of chess. In modern chess problems, a position is provided along with a stipulation such as “white to move and mate in two”, and the solver is tasked with finding a move (called a “key”) that satisfies the stipulation regardless of a hypothetical opposing player’s moves in response. These solutions are given in the same notation as lines of play in over-the-board games: typically algebraic notation, using abbreviations for the names of pieces, or figurine algebraic notation. Problem composers have not limited themselves to the materials of the conventional game, but have experimented with different board sizes and geometries, altered rules, goals other than checkmate, and different pieces. Problems that diverge from the standard game comprise a genre called “fairy chess”. Thomas Rayner Dawson, known as the “father of fairy chess”, pop- ularized the genre in the early 20th century. -
Chess Endgame News
Chess Endgame News Article Published Version Haworth, G. (2014) Chess Endgame News. ICGA Journal, 37 (3). pp. 166-168. ISSN 1389-6911 Available at http://centaur.reading.ac.uk/38987/ It is advisable to refer to the publisher’s version if you intend to cite from the work. See Guidance on citing . Publisher: The International Computer Games Association All outputs in CentAUR are protected by Intellectual Property Rights law, including copyright law. Copyright and IPR is retained by the creators or other copyright holders. Terms and conditions for use of this material are defined in the End User Agreement . www.reading.ac.uk/centaur CentAUR Central Archive at the University of Reading Reading’s research outputs online 166 ICGA Journal September 2014 CHESS ENDGAME NEWS G.McC. Haworth1 Reading, UK This note investigates the recently revived proposal that the stalemated side should lose, and comments further on the information provided by the FRITZ14 interface to Ronald de Man’s DTZ50 endgame tables (EGTs). Tables 1 and 2 list relevant positions: data files (Haworth, 2014b) provide chess-line sources and annotation. Pos.w-b Endgame FEN Notes g1 3-2 KBPKP 8/5KBk/8/8/p7/P7/8/8 b - - 34 124 Korchnoi - Karpov, WCC.5 (1978) g2 3-3 KPPKPP 8/6p1/5p2/5P1K/4k2P/8/8/8 b - - 2 65 Anand - Kramnik, WCC.5 (2007) 65. … Kxf5 g3 3-2 KRKRB 5r2/8/8/8/8/3kb3/3R4/3K4 b - - 94 109 Carlsen - van Wely, Corus (2007) 109. … Bxd2 == g4 7-7 KQR..KQR.. 2Q5/5Rpk/8/1p2p2p/1P2Pn1P/5Pq1/4r3/7K w Evans - Reshevsky, USC (1963), 49. -
Multilinear Algebra and Chess Endgames
Games of No Chance MSRI Publications Volume 29, 1996 Multilinear Algebra and Chess Endgames LEWIS STILLER Abstract. This article has three chief aims: (1) To show the wide utility of multilinear algebraic formalism for high-performance computing. (2) To describe an application of this formalism in the analysis of chess endgames, and results obtained thereby that would have been impossible to compute using earlier techniques, including a win requiring a record 243 moves. (3) To contribute to the study of the history of chess endgames, by focusing on the work of Friedrich Amelung (in particular his apparently lost analysis of certain six-piece endgames) and that of Theodor Molien, one of the founders of modern group representation theory and the first person to have systematically numerically analyzed a pawnless endgame. 1. Introduction Parallel and vector architectures can achieve high peak bandwidth, but it can be difficult for the programmer to design algorithms that exploit this bandwidth efficiently. Application performance can depend heavily on unique architecture features that complicate the design of portable code [Szymanski et al. 1994; Stone 1993]. The work reported here is part of a project to explore the extent to which the techniques of multilinear algebra can be used to simplify the design of high- performance parallel and vector algorithms [Johnson et al. 1991]. The approach is this: Define a set of fixed, structured matrices that encode architectural primitives • of the machine, in the sense that left-multiplication of a vector by this matrix is efficient on the target architecture. Formulate the application problem as a matrix multiplication. -
Hhdbiv.Nl for Ordering Details
see website www.hhdbiv.nl for ordering details. The world's largest endgame study database - edition 4 (HHdbIV) Introduction The fourth edition of the famous Harold van der Heijden endgame study database (HHdbIV) is available now. The new edition not only has more than eight thousand extra studies, but also the solutions of tens of thousands of studies have been corrected or updated. It is by far the most comprehensive collection of endgame studies available. Chess players can benefit from endgame studies by trying to solve them. This trains both one's calculation ability and tactical performance in the endgame. For the endgame study enthusiast, either admirer, cook hunter, composer or tourney judge HHdbIV is indispensable. Apart from the new studies the new version has many improvements over the previous edition. www.hhdbiv.nl What is an endgame study? An endgame study is a chess position presented as a puzzle with the stipulation White wins, or White draws, and has a unique solution. Although it looks like a game fragment, an endgame study has been composed. A good endgame study should have an entertaining solution with surprising moves or beautiful combinations that baffle chess players. It is also fun to try and solve endgame studies for both beginners and world class grandmasters as difficulty ranges from simple to very difficult. http://en.wikipedia.org/wiki/Endgame_study Chess Players "Studies are a very important part of the chess culture. I use a lot of studies for the training of imagination and calculations. The study database of Harold van der Heijden is the best source if you are looking for the less known positions". -
The World's Largest Endgame Study Database - Edition 5 (Hhdbv)
see website www.hhdbv.nl for ordering details. The world's largest endgame study database - edition 5 (HHdbV) Introduction The fifth edition of the famous Harold van der Heijden endgame study database (HHdbV) is available now. The new edition, with 85,619 studies not only has more than 9,000 new studies in comparison with HHdbIV, but also the solutions of tens of thousands of studies have been corrected or updated. It is by far the most comprehensive collection of endgame studies available. Chess players can benefit from endgame studies by trying to solve them. This trains both one's calculation ability and tactical performance in the endgame. For the endgame study enthusiast, either admirer, cook hunter, composer or tourney judge HHdbV is indispensable. Apart from the new studies the new version has many improvements over the previous editions. www.hhdbv.nl What is an endgame study? An endgame study is a chess position presented as a puzzle with the stipulation White wins, or White draws, and has a unique solution. Although it looks like a game fragment, an endgame study has been composed. A good endgame study should have an entertaining solution with surprising moves or beautiful combinations that baffle chess players. It is also fun to try and solve endgame studies for both beginners and world class grandmasters as difficulty ranges from simple to very difficult. http://en.wikipedia.org/wiki/Endgame_study Software The database is in PGN-format. This is a standard chess database format and can be accessed by commercial chess database programs (like ChessBase, Chess Assistant), commercial chess playing software (Fritz, Rybka, Shredder, etc.) and many freeware programs (e.g. -
Kasparov's Nightmare!! Bobby Fischer Challenges IBM to Simul IBM
California Chess Journal Volume 20, Number 2 April 1st 2004 $4.50 Kasparov’s Nightmare!! Bobby Fischer Challenges IBM to Simul IBM Scrambles to Build 25 Deep Blues! Past Vs Future Special Issue • Young Fischer Fires Up S.F. • Fischer commentates 4 Boyscouts • Building your “Super Computer” • Building Fischer’s Dream House • Raise $500 playing chess! • Fischer Articles Galore! California Chess Journal Table of Con tents 2004 Cal Chess Scholastic Championships The annual scholastic tourney finishes in Santa Clara.......................................................3 FISCHER AND THE DEEP BLUE Editor: Eric Hicks Contributors: Daren Dillinger A miracle has happened in the Phillipines!......................................................................4 FM Eric Schiller IM John Donaldson Why Every Chess Player Needs a Computer Photographers: Richard Shorman Some titles speak for themselves......................................................................................5 Historical Consul: Kerry Lawless Founding Editor: Hans Poschmann Building Your Chess Dream Machine Some helpful hints when shopping for a silicon chess opponent........................................6 CalChess Board Young Fischer in San Francisco 1957 A complet accounting of an untold story that happened here in the bay area...................12 President: Elizabeth Shaughnessy Vice-President: Josh Bowman 1957 Fischer Game Spotlight Treasurer: Richard Peterson One game from the tournament commentated move by move.........................................16 Members at -
A GUIDE to SCHOLASTIC CHESS (11Th Edition Revised June 26, 2021)
A GUIDE TO SCHOLASTIC CHESS (11th Edition Revised June 26, 2021) PREFACE Dear Administrator, Teacher, or Coach This guide was created to help teachers and scholastic chess organizers who wish to begin, improve, or strengthen their school chess program. It covers how to organize a school chess club, run tournaments, keep interest high, and generate administrative, school district, parental and public support. I would like to thank the United States Chess Federation Club Development Committee, especially former Chairman Randy Siebert, for allowing us to use the framework of The Guide to a Successful Chess Club (1985) as a basis for this book. In addition, I want to thank FIDE Master Tom Brownscombe (NV), National Tournament Director, and the United States Chess Federation (US Chess) for their continuing help in the preparation of this publication. Scholastic chess, under the guidance of US Chess, has greatly expanded and made it possible for the wide distribution of this Guide. I look forward to working with them on many projects in the future. The following scholastic organizers reviewed various editions of this work and made many suggestions, which have been included. Thanks go to Jay Blem (CA), Leo Cotter (CA), Stephan Dann (MA), Bob Fischer (IN), Doug Meux (NM), Andy Nowak (NM), Andrew Smith (CA), Brian Bugbee (NY), WIM Beatriz Marinello (NY), WIM Alexey Root (TX), Ernest Schlich (VA), Tim Just (IL), Karis Bellisario and many others too numerous to mention. Finally, a special thanks to my wife, Susan, who has been patient and understanding. Dewain R. Barber Technical Editor: Tim Just (Author of My Opponent is Eating a Doughnut and Just Law; Editor 5th, 6th and 7th editions of the Official Rules of Chess). -
No Slide Title
112 CONTENTS StrateGems 2011 h#n Award………………………………………. 58 Danka Petkova-90MT Award……………………………………… 59 Repeat the Sounding Joy……………………………………………63 The quest for a King-only proof game…….………………………. 66 Recently Honored US Compositions ……………………….……... 69 Original compositions and SG53 solutions……………………...… 71 StrateGems StrateGems Solving Ladder 2011, Leg 26 ………………...……… 93 StrateGems 2011 Solving Championship………………………….. 95 Four of a Kind……………………………………………………… 95 Petko A. Petkov Jubilee Tourney Award (PAP-70JT)…………….. 96 Recent Tourney Winners……………………………..……………. 103 2012 StrateGems Books Library ................................................................111 EDITORS Chief Editor: Mike Prcic, 2613 Northshore Lane, Westlake Village, CA 91361-3318, [email protected] #2 Editor: Aaron Hirschenson 6 Nizana Street, Metar 85025, Israel, [email protected] #3 Editor: Rauf Aliovsadzade 5600 Randolph St. Lincoln, NE 68510, [email protected] #n Editor: Richard Becker 510 Pleasant Ave. Oregon City, OR, 97045, [email protected] Studies Editor: Franjo Vrabec Blåkullagatan 31C, 25457 Helsingborg, Sweden, [email protected] Helpmates Editor: Nikola Stolev Buković 3a, n. Lisice, 1000 Skopje, Macedonia, [email protected] Series-Movers and Stalemates Editor: Radovan Tomašević Djure Salaja 19b/4, SRB-19000 Zajecar, Serbia, [email protected] Selfmates and Fairies Editor: Petko A. Petkov Janko Sakazov N 38, whod W, 1504-Sofia, Bulgaria, [email protected] nN Retros and Proof Games Editor: Kostas Prentos Kleanthous 23, GR-54453 Thessaloniki, Greece, [email protected] Solutions Editor: Danny Dunn 6717 Lahontan, Ft. Worth, TX 76132, [email protected] Consultant: Dan Meinking; StrateGems Web site: www.Strategems.org Language Editor: Virginia Prcic, Contributor: Bob Lincoln SUBSCRIPTION INFORMATION StrateGems. U.S. subscribers $35 per year. Other countries $40. Good Companions Fellow $50.