Cyrus Lakdawala Tactical Training
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A Combinatorial Game Theoretic Analysis of Chess Endgames
A COMBINATORIAL GAME THEORETIC ANALYSIS OF CHESS ENDGAMES QINGYUN WU, FRANK YU,¨ MICHAEL LANDRY 1. Abstract In this paper, we attempt to analyze Chess endgames using combinatorial game theory. This is a challenge, because much of combinatorial game theory applies only to games under normal play, in which players move according to a set of rules that define the game, and the last player to move wins. A game of Chess ends either in a draw (as in the game above) or when one of the players achieves checkmate. As such, the game of chess does not immediately lend itself to this type of analysis. However, we found that when we redefined certain aspects of chess, there were useful applications of the theory. (Note: We assume the reader has a knowledge of the rules of Chess prior to reading. Also, we will associate Left with white and Right with black). We first look at positions of chess involving only pawns and no kings. We treat these as combinatorial games under normal play, but with the modification that creating a passed pawn is also a win; the assumption is that promoting a pawn will ultimately lead to checkmate. Just using pawns, we have found chess positions that are equal to the games 0, 1, 2, ?, ", #, and Tiny 1. Next, we bring kings onto the chessboard and construct positions that act as game sums of the numbers and infinitesimals we found. The point is that these carefully constructed positions are games of chess played according to the rules of chess that act like sums of combinatorial games under normal play. -
Taming Wild Chess Openings
Taming Wild Chess Openings How to deal with the Good, the Bad, and the Ugly over the chess board By International Master John Watson & FIDE Master Eric Schiller New In Chess 2015 1 Contents Explanation of Symbols ���������������������������������������������������������������� 8 Icons ��������������������������������������������������������������������������������� 9 Introduction �������������������������������������������������������������������������� 10 BAD WHITE OPENINGS ��������������������������������������������������������������� 18 Halloween Gambit: 1.e4 e5 2.♘f3 ♘c6 3.♘c3 ♘f6 4.♘xe5 ♘xe5 5.d4 . 18 Grünfeld Defense: The Gibbon: 1.d4 ♘f6 2.c4 g6 3.♘c3 d5 4.g4 . 20 Grob Attack: 1.g4 . 21 English Wing Gambit: 1.c4 c5 2.b4 . 25 French Defense: Orthoschnapp Gambit: 1.e4 e6 2.c4 d5 3.cxd5 exd5 4.♕b3 . 27 Benko Gambit: The Mutkin: 1.d4 ♘f6 2.c4 c5 3.d5 b5 4.g4 . 28 Zilbermints - Benoni Gambit: 1.d4 c5 2.b4 . 29 Boden-Kieseritzky Gambit: 1.e4 e5 2.♘f3 ♘c6 3.♗c4 ♘f6 4.♘c3 ♘xe4 5.0-0 . 31 Drunken Hippo Formation: 1.a3 e5 2.b3 d5 3.c3 c5 4.d3 ♘c6 5.e3 ♘e7 6.f3 g6 7.g3 . 33 Kadas Opening: 1.h4 . 35 Cochrane Gambit 1: 5.♗c4 and 5.♘c3 . 37 Cochrane Gambit 2: 5.d4 Main Line: 1.e4 e5 2.♘f3 ♘f6 3.♘xe5 d6 4.♘xf7 ♔xf7 5.d4 . 40 Nimzowitsch Defense: Wheeler Gambit: 1.e4 ♘c6 2.b4 . 43 BAD BLACK OPENINGS ��������������������������������������������������������������� 44 Khan Gambit: 1.e4 e5 2.♗c4 d5 . 44 King’s Gambit: Nordwalde Variation: 1.e4 e5 2.f4 ♕f6 . 45 King’s Gambit: Sénéchaud Countergambit: 1.e4 e5 2.f4 ♗c5 3.♘f3 g5 . -
The Wangling Wizards the Chess Problems of the Warton Brothers
The Wangling Wizards The chess problems of the Warton brothers Compiled by Michael McDowell ½ û White to play and mate in 3 British Chess Problem Society 2005 The Wangling Wizards Introduction Tom and Joe Warton were two of the most popular British chess problem composers of the twentieth century. They were often compared to the American "Puzzle King" Sam Loyd because they rarely composed problems illustrating formal themes, instead directing their energies towards hoodwinking the solver. Piquant keys and well-concealed manoeuvres formed the basis of a style that became known as "Wartonesque" and earned the brothers the nickname "the Wangling Wizards". Thomas Joseph Warton was born on 18 th July 1885 at South Mimms, Hertfordshire, and Joseph John Warton on 22 nd September 1900 at Notting Hill, London. Another brother, Edwin, also composed problems, and there may have been a fourth composing Warton, as a two-mover appeared in the August 1916 issue of the Chess Amateur under the name G. F. Warton. After a brief flourish Edwin abandoned composition, although as late as 1946 he published a problem in Chess . Tom and Joe began composing around 1913. After Tom’s early retirement from the Metropolitan Police Force they churned out problems by the hundred, both individually and as a duo, their total output having been estimated at over 2600 problems. Tom died on 23rd May 1955. Joe continued to compose, and in the 1960s published a number of joints with Jim Cresswell, problem editor of the Busmen's Chess Review , who shared his liking for mutates. Many pleasing works appeared in the BCR under their amusing pseudonym "Wartocress". -
Social Conflict and Sacrificial Rhetoric
CHRISTOPHER ROBERTS Social Conflict and Sacrificial Rhetoric Luther’s Discursive Intervention and the Religious Division of Labor Introduction ‘Sacrifice’ is a religious term whose use extends far beyond the church door. People from all walks of life speak of ‘sacrifice’ when they want to evoke an irreducible conflict in the relations between self, family, and soci- ety. In America, hardly a speech goes by without political leaders insisting upon the necessity and virtue of sacrifice, but rarely will they clarify who is sacrificing what, and to whom. Indeed, this is not only an American phenomenon, as a number of recent texts examining ‘sacrifice’ as a term in various national discourses have shown.1 Such a political and economic deployment of a religious figure demands interpretation, for not only does the rhetoric of sacrifice span the globe,2 it constitutes a problem with a long genealogy. As a key moment in the Western segment of this genealogy, this article will examine the way that Luther’s exegetical work rhetoricalized sacrifice, and, in doing so, constructed a new discursive position, the pas- tor as anti-sophist, or parrhesiast, in the religious division of labor. The overarching question for this inquiry is how did a particular re- ligious ritual like sacrifice come to serve as such a widespread rhetorical figure? When faced with the immense historical distance between, first, the public destruction of wealth or butchering of an animal, and, last, a speech act describing non-ritual phenomena as a sacrifice, one measures the distance not only in years but also in religious and cultural transform- ation. -
CONTENTS Contents
CONTENTS Contents Symbols 5 Preface 6 Introduction 9 1 Glossary of Attacking and Strategic Terms 11 2 Double Attack 23 2.1: Double Attacks with Queens and Rooks 24 2.2: Bishop Forks 31 2.3: Knight Forks 34 2.4: The Í+Ì Connection 44 2.5: Pawn Forks 45 2.6: The Discovered Double Attack 46 2.7: Another Type of Double Attack 53 Exercises 55 Solutions 61 3 The Role of the Pawns 65 3.1: Pawn Promotion 65 3.2: The Far-Advanced Passed Pawn 71 3.3: Connected Passed Pawns 85 3.4: The Pawn-Wedge 89 3.5: Passive Sacrifices 91 3.6: The Kamikaze Pawn 92 Exercises 99 Solutions 103 4 Attacking the Castled Position 106 4.1: Weakness in the Castled Position 106 4.2: Rooks and Files 112 4.3: The Greek Gift 128 4.4: Other Bishop Sacrifices 133 4.5: Panic on the Long Diagonal 143 4.6: The Knight Sacrifice 150 4.7: The Exchange Sacrifice 162 4.8: The Queen Sacrifice 172 Exercises 176 Solutions 181 5 Drawing Combinations 186 5.1: Perpetual Check 186 5.2: Repetition of Position 194 5.3: Stalemate 197 5.4: Fortress and Blockade 202 5.5: Positional Draws 204 Exercises 207 Solutions 210 6 Combined Tactical Themes 213 6.1: Material, Endings, Zugzwang 214 6.2: One Sacrifice after Another 232 6.3: Extraordinary Combinations 242 6.4: A Diabolical Position 257 Exercises 260 Solutions 264 7 Opening Disasters 268 7.1: Open Games 268 7.2: Semi-Open Games 274 7.3: Closed Games 288 8 Tactical Examination 304 Test 1 306 Test 2 308 Test 3 310 Test 4 312 Test 5 314 Test 6 316 Hints 318 Solutions 320 Index of Names 331 Index of Openings 335 THE ROLE OF THE PAWNS 3 The Role of the Pawns Ever since the distant days of the 18th century 3.1: Pawn Promotion (let us call it the time of the French Revolution, or of François-André Danican Philidor) we have known that “pawns are the soul of chess”. -
The London System Is a Chess Opening That Usually Arises After 1.D4 and 2.Bf4, Or 2.Nf3 and 3.Bf4
ICC presents: The London System by GM Damian Lemos This is a guide that comes with the video course “The London System”. We highly recommend you first watch the video series before completing these exercises. To watch the videos, click here. The London System is a chess opening that usually arises after 1.d4 and 2.Bf4, or 2.Nf3 and 3.Bf4. It is a "system" opening that can be used against virtually any black defense and thus comprises a smaller body of opening theory than many other openings. The London is a set of solid lines where after 1.d4 White quickly develops his dark- squared bishop to f4 and normally bolsters his center with pawns on c3 and e3 rather than expanding. Although it has the potential for a quick kingside attack, the white forces are generally flexible enough to engage in a battle anywhere on the board. Historically it developed into a system mainly from three variations: 1.d4 d5 2.Nf3 Nf6 3.Bf4 1.d4 Nf6 2.Nf3 e6 3.Bf4 1.d4 Nf6 2.Nf3 g6 3.Bf4 "There is one opening that shines above all others when comparing reward payout to the input effort," says Zhigen Lin. "It is relatively quick to learn and obscure enough that even titled opponents may not have a proper antidote lined up." He is - of course - talking about the London System, popularized by the London BCF Congress Tournament of 1922. ICC presents: The London System by GM Damian Lemos Learning the London system is not hard, and it can be an essential arrow in your quiver! All you need is a set of videos by an experienced GM and, of course, a lot of practice! Damian Lemos became a chess Grandmaster at 18 and won the Gold Medal at the Pan-American Games U-20 in Colombia. -
UIL Text 111212
UIL Chess Puzzle Solvin g— Fall/Winter District 2016-2017 —Grades 4 and 5 IMPORTANT INSTRUCTIONS: [Test-administrators, please read text in this box aloud.] This is the UIL Chess Puzzle Solving Fall/Winter District Test for grades four and five. There are 20 questions on this test. You have 30 minutes to complete it. All questions are multiple choice. Use the answer sheet to mark your answers. Multiple choice answers pur - posely do not indicate check, checkmate, or e.p. symbols. You will be awarded one point for each correct answer. No deductions will be made for incorrect answers on this test. Finishing early is not rewarded, even to break ties. So use all of your time. Some of the questions may be hard, but all of the puzzles are interesting! Good luck and have fun! If you don’t already know chess notation, reading and referring to the section below on this page will help you. How to read and answer questions on this test Piece Names Each chessman can • To answer the questions on this test, you’ll also be represented need to know how to read chess moves. It’s by a symbol, except for the pawn. simple to do. (Figurine Notation) K King Q • Every square on the board has an “address” Queen R made up of a letter and a number. Rook B Bishop N Knight Pawn a-h (We write the file it’s on.) • To make them easy to read, the questions on this test use the figurine piece symbols on the right, above. -
TCEC15: the 15Th Top Chess Engine Championship
TCEC15: the 15th Top Chess Engine Championship Guy Haworth1 and Nelson Hernandez Reading, UK and Maryland, USA TCEC Season 15 started on March 5th 2019 with a more liberal Division 4 featuring several engines in their first TCEC season. At the top end, interest would centre on whether the recent entries, ETHEREAL, KOMODO MCTS and LEELA CHESS ZERO would again improve their already impressive performances. Fig. 1 and Table 1 provide the logos and details on the enlarged field of 44 engines. DP D1 D2 D3 D4 Fig. 1. Logos for the TCEC 15 engines (CPW, 2019) as in their original divisions. There were a few nudges to the rules. In the event of network breaks, if both engines were in the 7-man and/or TCEC win (or draw) zone, the game was adjudicated as a win (or draw). Otherwise, TCEC resumed games with extra initialisation time rather than restart them. The common platform for TCEC15, as for TCEC14, consisted of two computers. One was the estab- lished, formidable 44-core server of TCEC11-14 (Intel, 2017) with 64GiB of DDR4 ECC RAM and a Crucial CT250M500 240 GB SSD for the EGTs. The ‘GPU server’, upgraded to a Quad Core i5 3570k with 32GiB DDR3 RAM, sported Nvidia (2018) GeForce RTX 2080 Ti and 2080 GPUs. 1 Corresponding author: [email protected] Table 1. The TCEC15 engines (CPW, 2019), details, authors and progress. Engine Initial proto- Hash Countr Final # thr. EGTs Authors ab Name Version ELO Div. col Kb y Codes Div. 01 AS AllieStein v0.1-n4 2557 4b 3 uci 7,168 — Adam Treat and Mark Jordan US ↗↗ ↗↗P 02 An Andscacs 0.95123 3469 1 43 uci 8,192 — Daniel José Queraltó AD →1 03 Ar Arasan TCEC15 3290 3 43 uci 16,384 Syz. -
Шахматных Задач Chess Exercises Schachaufgaben
Всеволод Костров Vsevolod Kostrov Борис Белявский Boris Beliavsky 2000 Шахматных задач Chess exercises Schachaufgaben РЕШЕБНИК TACTICAL CHESS.. EXERCISES SCHACHUBUNGSBUCH Шахматные комбинации Chess combinations Kombinationen Часть 1-2 разряд Part 1700-2000 Elo 3 Teil 1-2 Klasse Русский шахматный дом/Russian Chess House Москва, 2013 В первых двух книжках этой серии мы вооружили вас мощными приёмами для успешного ведения шахматной борьбы. В вашем арсенале появились двойной удар, связка, завлечение и отвлечение. Новый «Решебник» обогатит вас более изысканным тактическим оружием. Не всегда до короля можно добраться, используя грубую силу. Попробуйте обхитрить партнёра с помощью плаща и кинжала. Маскируйтесь, как разведчик, и ведите себя, как опытный дипломат. Попробуйте найти слабое место в лагере противника и в нужный момент уничтожьте защиту и нанесите тонкий кинжальный удар. Кстати, чужие фигуры могут стать союзниками. Умелыми манёврами привлеките фигуры противника к их королю, пускай они его заблокируют так, чтобы ему, бедному, было не вздохнуть, и в этот момент нанесите решающий удар. Неприятно, когда все фигуры вашего противника взаимодействуют между собой. Может, стоить вбить клин в их порядки – перекрыть их прочной шахматной дверью. А так ли страшна атака противника на ваши укрепления? Стоит ли уходить в глухую оборону? Всегда ищите контрудар. Тонкий промежуточный укол изменит ход борьбы. Не сгрудились ли ваши фигуры на небольшом пространстве, не мешают ли они друг другу добраться до короля противника? Решите, кому всё же идти на штурм королевской крепости, и освободите пространство фигуре для атаки. Короля всегда надо защищать в первую очередь. Используйте это обстоятельство и совершите открытое нападение на него и другие фигуры. И тогда жернова вашей «мельницы» перемелют всё вражеское войско. -
A Game of Queens
Judit Polgar Teaches Chess 3 A Game of Queens by Judit Polgar with invaluable help from Mihail Marin Quality Chess www.qualitychess.co.uk Contents Key to Symbols used 4 Preface 5 1 Kasparov 11 2 Karpov 45 3 Korchnoi 71 4 The Rapid Match with Anand 101 5 Oliver 115 6 Hanna 141 7 The Opening 167 8 The Middlegame 199 9 The Endgame 217 10 Unexpected Moves 273 11 Official Competitions 285 12 Where It All Started 365 Records and Results 382 Name Index 384 Game Index 387 126 A Game of Queens Judit Polgar – Ivan Sokolov have relied, though, on the fact that I had never before faced it in practice. Wijk aan Zee 2005 13.d5 1.e4 e5 2.¤f3 ¤c6 3.¥b5 a6 4.¥a4 ¤f6 It looks logical to block the centre after Black 5.0–0 ¥e7 6.¦e1 b5 7.¥b3 d6 8.c3 0–0 no longer has the freeing ...c7-c6. In the long Ivan has played the Ruy Lopez throughout run, Black will have to re-develop his bishop, his career, so he has had the time to try out most likely with ...¥c8-d7. all kinds of systems: the Berlin Wall and the Marshall Attack, the Open and Bird If White wishes to maintain the tension in the variations, as well as several systems in the centre, the alternatives are 13.¤f1 ¦e8 14.¤g3 closed variations. and 13.b3. Back in 1994 in Madrid, I won my first game against Ivan by somewhat restricting his 13...g6 choice with 9.d4, but by 2005 I used to stick 13...c4 is a typical reaction after d4-d5, but to the main lines. -
Colorado Chess Informant
Volume 39, Number 3 July 2012 / $3.00 Colorado State Chess Association COLORADO CHESS INFORMANT Photo by Michael Wokurka Grandmaster Tejas Bakre receiving his prize winnings from Organizer, Joe Fromme. Grandmaster In The House! Bobby Fischer Saluted www.colorado-chess.com Volume 39, Number 3 Colorado Chess Informant July 2012 From The Editor Whew, it has been a busy past few months for chess in Colorado. When the membership voted to go to an all electronic issue of the Informant, that gave me the ability to expand an issue as The Colorado State Chess Junior Representative: much as the number of articles allowed without incurring any Association, Inc., is a Section Rhett Langseth cost to the CSCA. 501(C)(3) tax exempt, non- 15282 Paddington Circle 44 pages of chess in Colorado awaits you in this issue! That profit educational corporation Colorado Springs, CO 80921 should keep you busy for the next three months. The feature of formed to promote chess in [email protected] this issue is the wonderful “Salute to Bobby Fischer Chess Tour- Colorado. Contributions are Members at Large: nament” that was held in early May and which I was once again tax deductible. Dues are $15 a Frank Deming honored by the Organizer, Joe Fromme, in having selected me as year or $5 a tournament. Youth 7906 Eagle Ranch Road the Tournament Director. Again a premier event all around and (under 21) and Senior (65 or Fort Collins, CO 80528 even more so when we had the pleasure of hosting Grandmaster older) memberships are $10. [email protected] Tejas Bakre from India, who decided to play. -
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.