A Computer Composes a Fabled Problem: Four Knights Vs. Queen
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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. -
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. -
Yale Yechiel N. Robinson, Patent Attorney Email: [email protected]
December 16, 2019 From: Yale Yechiel N. Robinson, Patent Attorney Email: [email protected] To: United States Patent and Trademark Office (USPTO) Email: [email protected] Re: Request for Comments on Intellectual Property Protection for Artificial Intelligence Innovation, Docket number: PTO-C-2019-0038 To the USPTO and Members of the Public: My name is Yale Robinson. In addition to my professional work as a patent attorney and in other legal matters, I have for years enjoyed the intergenerational conversation within the game of chess, which originated many centuries ago and spread across Europe and North America around the middle of the 19th century, and has since reached every major country in the world. I will direct my comments regarding issues of intellectual property for artificial intelligence innovations based on the history of traditional western chess. Early innovators in computing, including Alan Turing and Claude Shannon, tried to calculate the value of certain chess positions using the 1950-era equivalent of a present-day handheld calculator. Their work launched the age of computer chess, where the strongest present-day computers can consistently (but not always) defeat or draw elite human grandmasters. The quality of human-versus-human play has increased in part because of computer analysis of opening and middle-game positions that strong players can analyze and practice playing on their home computer device before trying the idea against a human player in competition. In addition to the development of chess theory for the benefit of chess players (human and electronic alike), the impact of chess computing has arguably extended beyond the limits of the game itself. -
Benko 90 JT the Provisional Award XABCDEFGHY 8-+-+-+
Benko 90 JT The provisional award In the tournament invitation we wrote Pal Benko as judge. Unfortunately he had to hand over this role to someone else. Benko GM had temporary problems with his sight. Benko chose Richard Becker instead of himself. Richard Becker's judgment report and the award, that I published in the 6/2019 issue of Magyar Sakkvilag . (Peter Gyarmati , tournament director) "To my mind, Pal Benko straddled the chess world like a Colossus; one foot in the world of OTB chess and the other reaching to all the genres of chess composition. His endgame studies are at the highest level of our art. They are filled with novel and counter-intuitive ideas expressed with grandmasterly technique and a degree of economy that truly is pre-computer wizardry. In judging the Pal Benko-90 JT, I tried to reward deep plans and surprise moves, good technique and economy, and anything with a thematic ring to it. From among the 65 studies in anonymous form I received from Peter, I found eleven that satisfied. Upon further review, four studies fell out of competition due to serious duals. These seven remaining studies I recommend as the winners. 1st Prize Jan Timman XABCDEFGHY 8-+-+-+-( 7+-+-++-' 6--+-+-+& 5++-+-+-% 4-+-+-+-$ 3-+-+--# 2+-+-+" 1+-+-+-! xabcdefghy win 1.d1 [The reasonable looking 1.e3+? g4 2.d3 fails to 2... 2...f6! 3.xf6 e7 4.a1 g5=] 1...c1 2.e2 h3 [2...g2 3.d4+-] 3.g1+ [Not 3.c4? g2 4.c5 a3! draw] 3...h2 4.f2 [4.f1? g2=] 4...f6! 5.xf6 b2 6.c3!! [The logical try: 6.xb2 d1+! 7.xd1 a1! 8.h1+ xh1 9.xa1 h2 10.g3 g1 11.d4+ h1 12.c5 bxc5 13.f2 c4 14.b6 c3 and stalemate can no longer be avoided] 6...xc3 7.xc3 d1+ [2nd main line: 7...a1 8.xa1 (8.xa1? d1+! 9.f1 e3+ 10.f2 d1+=) 8...d1+ 9.f1 xc3 10.a5!! zz 10...d5 11.a3 c7 12.b3 d5 13.f2 and wins] 8.xd1 a1 9.h1+! xh1 [9...xh1 10.e5#] 10.xa1 h2 11.g3 g1 12.d4+ h1 13.c5! bxc5 14.f2 c4 15.b6 c3 16.b7 and mates in three. -
YEARBOOK the Information in This Yearbook Is Substantially Correct and Current As of December 31, 2020
OUR HERITAGE 2020 US CHESS YEARBOOK The information in this yearbook is substantially correct and current as of December 31, 2020. For further information check the US Chess website www.uschess.org. To notify US Chess of corrections or updates, please e-mail [email protected]. U.S. CHAMPIONS 2002 Larry Christiansen • 2003 Alexander Shabalov • 2005 Hakaru WESTERN OPEN BECAME THE U.S. OPEN Nakamura • 2006 Alexander Onischuk • 2007 Alexander Shabalov • 1845-57 Charles Stanley • 1857-71 Paul Morphy • 1871-90 George H. 1939 Reuben Fine • 1940 Reuben Fine • 1941 Reuben Fine • 1942 2008 Yury Shulman • 2009 Hikaru Nakamura • 2010 Gata Kamsky • Mackenzie • 1890-91 Jackson Showalter • 1891-94 Samuel Lipchutz • Herman Steiner, Dan Yanofsky • 1943 I.A. Horowitz • 1944 Samuel 2011 Gata Kamsky • 2012 Hikaru Nakamura • 2013 Gata Kamsky • 2014 1894 Jackson Showalter • 1894-95 Albert Hodges • 1895-97 Jackson Reshevsky • 1945 Anthony Santasiere • 1946 Herman Steiner • 1947 Gata Kamsky • 2015 Hikaru Nakamura • 2016 Fabiano Caruana • 2017 Showalter • 1897-06 Harry Nelson Pillsbury • 1906-09 Jackson Isaac Kashdan • 1948 Weaver W. Adams • 1949 Albert Sandrin Jr. • 1950 Wesley So • 2018 Samuel Shankland • 2019 Hikaru Nakamura Showalter • 1909-36 Frank J. Marshall • 1936 Samuel Reshevsky • Arthur Bisguier • 1951 Larry Evans • 1952 Larry Evans • 1953 Donald 1938 Samuel Reshevsky • 1940 Samuel Reshevsky • 1942 Samuel 2020 Wesley So Byrne • 1954 Larry Evans, Arturo Pomar • 1955 Nicolas Rossolimo • Reshevsky • 1944 Arnold Denker • 1946 Samuel Reshevsky • 1948 ONLINE: COVID-19 • OCTOBER 2020 1956 Arthur Bisguier, James Sherwin • 1957 • Robert Fischer, Arthur Herman Steiner • 1951 Larry Evans • 1952 Larry Evans • 1954 Arthur Bisguier • 1958 E. -
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 -
Reshevsky Wins Playoff, Qualifies for Interzonal Title Match Benko First in Atlantic Open
RESHEVSKY WINS PLAYOFF, TITLE MATCH As this issue of CHESS LIFE goes to QUALIFIES FOR INTERZONAL press, world champion Mikhail Botvinnik and challenger Tigran Petrosian are pre Grandmaster Samuel Reshevsky won the three-way playoff against Larry paring for the start of their match for Evans and William Addison to finish in third place in the United States the chess championship of the world. The contest is scheduled to begin in Moscow Championship and to become the third American to qualify for the next on March 21. Interzonal tournament. Reshevsky beat each of his opponents once, all other Botvinnik, now 51, is seventeen years games in the series being drawn. IIis score was thus 3-1, Evans and Addison older than his latest challenger. He won the title for the first time in 1948 and finishing with 1 %-2lh. has played championship matches against David Bronstein, Vassily Smyslov (three) The games wcre played at the I·lerman Steiner Chess Club in Los Angeles and Mikhail Tal (two). He lost the tiUe to Smyslov and Tal but in each case re and prizes were donated by the Piatigorsky Chess Foundation. gained it in a return match. Petrosian became the official chal By winning the playoff, Heshevsky joins Bobby Fischer and Arthur Bisguier lenger by winning the Candidates' Tour as the third U.S. player to qualify for the next step in the World Championship nament in 1962, ahead of Paul Keres, Ewfim Geller, Bobby Fischer and other cycle ; the InterzonaL The exact date and place for this event havc not yet leading contenders. -
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. -
Extended Null-Move Reductions
Extended Null-Move Reductions Omid David-Tabibi1 and Nathan S. Netanyahu1,2 1 Department of Computer Science, Bar-Ilan University, Ramat-Gan 52900, Israel [email protected], [email protected] 2 Center for Automation Research, University of Maryland, College Park, MD 20742, USA [email protected] Abstract. In this paper we review the conventional versions of null- move pruning, and present our enhancements which allow for a deeper search with greater accuracy. While the conventional versions of null- move pruning use reduction values of R ≤ 3, we use an aggressive re- duction value of R = 4 within a verified adaptive configuration which maximizes the benefit from the more aggressive pruning, while limiting its tactical liabilities. Our experimental results using our grandmaster- level chess program, Falcon, show that our null-move reductions (NMR) outperform the conventional methods, with the tactical benefits of the deeper search dominating the deficiencies. Moreover, unlike standard null-move pruning, which fails badly in zugzwang positions, NMR is impervious to zugzwangs. Finally, the implementation of NMR in any program already using null-move pruning requires a modification of only a few lines of code. 1 Introduction Chess programs trying to search the same way humans think by generating “plausible” moves dominated until the mid-1970s. By using extensive chess knowledge at each node, these programs selected a few moves which they consid- ered plausible, and thus pruned large parts of the search tree. However, plausible- move generating programs had serious tactical shortcomings, and as soon as brute-force search programs such as Tech [17] and Chess 4.x [29] managed to reach depths of 5 plies and more, plausible-move generating programs fre- quently lost to brute-force searchers due to their tactical weaknesses. -
{Download PDF} Kasparov Versus Deep Blue : Computer Chess
KASPAROV VERSUS DEEP BLUE : COMPUTER CHESS COMES OF AGE PDF, EPUB, EBOOK Monty Newborn | 322 pages | 31 Jul 2012 | Springer-Verlag New York Inc. | 9781461274773 | English | New York, NY, United States Kasparov versus Deep Blue : Computer Chess Comes of Age PDF Book In terms of human comparison, the already existing hierarchy of rated chess players throughout the world gave engineers a scale with which to easily and accurately measure the success of their machine. This was the position on the board after 35 moves. Nxh5 Nd2 Kg4 Bc7 Famously, the mechanical Turk developed in thrilled and confounded luminaries as notable as Napoleon Bonaparte and Benjamin Franklin. Kf1 Bc3 Deep Blue. The only reason Deep Blue played in that way, as was later revealed, was because that very same day of the game the creators of Deep Blue had inputted the variation into the opening database. KevinC The allegation was that a grandmaster, presumably a top rival, had been behind the move. When it's in the open, anyone could respond to them, including people who do understand them. Qe2 Qd8 Bf3 Nd3 IBM Research. Nearly two decades later, the match still fascinates This week Time Magazine ran a story on the famous series of matches between IBM's supercomputer and Garry Kasparov. Because once you have an agenda, where does indifference fit into the picture? Raa6 Ba7 Black would have acquired strong counterplay. In fact, the first move I looked at was the immediate 36 Be4, but in a game, for the same safety-first reasons the black counterplay with a5 I might well have opted for 36 axb5.