Is Four File Chess a Draw?
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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”. -
TCAS II) by Personnel Involved in the Implementation and Operation of TCAS II
Preface This booklet provides the background for a better understanding of the Traffic Alert and Collision Avoidance System (TCAS II) by personnel involved in the implementation and operation of TCAS II. This booklet is an update of the TCAS II Version 7.0 manual published in 2000 by the Federal Aviation Administration (FAA). It describes changes to the CAS logic introduced by Version 7.1 and updates the information on requirements for use of TCAS II and operational experience. Version 7.1 logic changes will improve TCAS Resolution Advisory (RA) sense reversal logic in vertical chase situations. In addition all “Adjust Vertical Speed, Adjust” RAs are converted to “Level-Off, Level-Off” RAs to make it more clear that a reduction in vertical rate is required. The Minimum Operational Performance Standards (MOPS) for TCAS II Version 7.1 were approved in June 2008 and Version 7.1 units are expected to be operating by 2010-2011. Version 6.04a and 7.0 units are also expected to continue operating for the foreseeable future where authorized. 2 Preface................................................................................................................................. 2 The TCAS Solution............................................................................................................. 5 Early Collision Avoidance Systems................................................................................ 5 TCAS II Development .................................................................................................... 6 Initial -
Issue 16, June 2019 -...CHESSPROBLEMS.CA
...CHESSPROBLEMS.CA Contents 1 Originals 746 . ISSUE 16 (JUNE 2019) 2019 Informal Tourney....... 746 Hors Concours............ 753 2 Articles 755 Andreas Thoma: Five Pendulum Retros with Proca Anticirce.. 755 Jeff Coakley & Andrey Frolkin: Multicoded Rebuses...... 757 Arno T¨ungler:Record Breakers VIII 766 Arno T¨ungler:Pin As Pin Can... 768 Arno T¨ungler: Circe Series Tasks & ChessProblems.ca TT9 ... 770 3 ChessProblems.ca TT10 785 4 Recently Honoured Canadian Compositions 786 5 My Favourite Series-Mover 800 6 Blast from the Past III: Checkmate 1902 805 7 Last Page 808 More Chess in the Sky....... 808 Editor: Cornel Pacurar Collaborators: Elke Rehder, . Adrian Storisteanu, Arno T¨ungler Originals: [email protected] Articles: [email protected] Chess drawing by Elke Rehder, 2017 Correspondence: [email protected] [ c Elke Rehder, http://www.elke-rehder.de. Reproduced with permission.] ISSN 2292-8324 ..... ChessProblems.ca Bulletin IIssue 16I ORIGINALS 2019 Informal Tourney T418 T421 Branko Koludrovi´c T419 T420 Udo Degener ChessProblems.ca's annual Informal Tourney Arno T¨ungler Paul R˘aican Paul R˘aican Mirko Degenkolbe is open for series-movers of any type and with ¥ any fairy conditions and pieces. Hors concours compositions (any genre) are also welcome! ! Send to: [email protected]. " # # ¡ 2019 Judge: Dinu Ioan Nicula (ROU) ¥ # 2019 Tourney Participants: ¥!¢¡¥£ 1. Alberto Armeni (ITA) 2. Rom´eoBedoni (FRA) C+ (2+2)ser-s%36 C+ (2+11)ser-!F97 C+ (8+2)ser-hsF73 C+ (12+8)ser-h#47 3. Udo Degener (DEU) Circe Circe Circe 4. Mirko Degenkolbe (DEU) White Minimummer Leffie 5. Chris J. Feather (GBR) 6. -
Solved Openings in Losing Chess
1 Solved Openings in Losing Chess Mark Watkins, School of Mathematics and Statistics, University of Sydney 1. INTRODUCTION Losing Chess is a chess variant where each player tries to lose all one’s pieces. As the naming of “Giveaway” variants has multiple schools of terminology, we state for definiteness that captures are compulsory (a player with multiple captures chooses which to make), a King can be captured like any other piece, Pawns can promote to Kings, and castling is not legal. There are competing rulesets for stalemate: International Rules give the win to the player on move, while FICS (Free Internet Chess Server) Rules gives the win to the player with fewer pieces (and a draw if equal). Gameplay under these rulesets is typically quite similar.1 Unless otherwise stated, we consider the “joint” FICS/International Rules, where a stalemate is a draw unless it is won under both rulesets. There does not seem to be a canonical place for information about Losing Chess. The ICGA webpage [H] has a number of references (notably [Li]) and is a reasonable historical source, though the page is quite old and some of the links are broken. Similarly, there exist a number of piecemeal Internet sites (I found the most useful ones to be [F1], [An], and [La]), but again some of these have not been touched in 5-10 years. Much of the information was either outdated or tangential to our aim of solving openings (in particular responses to 1. e3), We started our work in late 2011. The long-term goal was to weakly solve the game, presumably by showing that 1. -
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. -
More About Checkmate
MORE ABOUT CHECKMATE The Queen is the best piece of all for getting checkmate because it is so powerful and controls so many squares on the board. There are very many ways of getting CHECKMATE with a Queen. Let's have a look at some of them, and also some STALEMATE positions you must learn to avoid. You've already seen how a Rook can get CHECKMATE XABCDEFGHY with the help of a King. Put the Black King on the side of the 8-+k+-wQ-+( 7+-+-+-+-' board, the White King two squares away towards the 6-+K+-+-+& middle, and a Rook or a Queen on any safe square on the 5+-+-+-+-% same side of the board as the King will give CHECKMATE. 4-+-+-+-+$ In the first diagram the White Queen checks the Black King 3+-+-+-+-# while the White King, two squares away, stops the Black 2-+-+-+-+" King from escaping to b7, c7 or d7. If you move the Black 1+-+-+-+-! King to d8 it's still CHECKMATE: the Queen stops the Black xabcdefghy King moving to e7. But if you move the Black King to b8 is CHECKMATE! that CHECKMATE? No: the King can escape to a7. We call this sort of CHECKMATE the GUILLOTINE. The Queen comes down like a knife to chop off the Black King's head. But there's another sort of CHECKMATE that you can ABCDEFGH do with a King and Queen. We call this one the KISS OF 8-+k+-+-+( DEATH. Put the Black King on the side of the board, 7+-wQ-+-+-' the White Queen on the next square towards the middle 6-+K+-+-+& and the White King where it defends the Queen and you 5+-+-+-+-% 4-+-+-+-+$ get something like our next diagram. -
Caissa Nieuws
rvd v CAISSA NIEUWS -,1. 374 Met een vraagtecken priJ"ken alleen die zetten, die <!-Cl'.1- logiSchcnloop der partij werkelijk ingrijpend vemol"en. Voor zichzelf·sprekende dreigingen zijn niet vermeld. · Ah, de klassieken ... april 1999 Caissanieuws 37 4 april 1999 Colofon Inhoud Redactioneel meer is, hij zegt toe uit de doeken te doen 4. Gerard analyseert de pijn. hoe je een eindspeldatabase genereert. CaïssaNieuws is het clubblad van de Wellicht is dat iets voor Ed en Leo, maar schaakvereniging Caïssa 6. Rikpareert Predrag. Dik opgericht 1-5-1951 6. Dennis komt met alle standen. verder ook voor elke Caïssaan die zijn of it is een nummer. Met een schaak haar spel wil verbeteren. Daar zijn we wel Clublokaal: Oranjehuis 8. Derde nipt naar zege. dik Van Ostadestraat 153 vrije avond en nog wat feestdagen in benieuwd naar. 10. Zesde langs afgrond. 1073 TKAmsterdam hetD vooruitzicht is dat wel prettig. Nog aan Tot slot een citaat uit de bespreking van Telefoon - clubavond: 679 55 59 dinsda_g_ 13. Maarten heeftnotatie-biljet op genamer is het te merken dat er mensen Robert Kikkert van een merkwaardig boek Voorzitter de rug. zijn die de moeite willen nemen een bij dat weliswaar de Grünfeld-verdediging als Frans Oranje drage aan het clubblad te leveren zonder onderwerp heeft, maar ogenschijnlijk ook Oudezijds Voorburgwal 109 C 15. Tuijl vloert Vloermans. 1012 EM Amsterdam 17. Johan ziet licht aan de horizon. dat daar om gevraagd is. Zo moet het! een ongebruikelijke visieop ons multi-culti Telefoon 020 627 70 17 18. Leo biedt opwarmertje. In deze aflevering van CN zet Gerard wereldje bevat en daarbij enpassant het we Wedstrijdleider interne com12etitie nauwgezet uiteen dat het beter kanen moet reldvoedselverdelingsvraagstukaan de orde Steven Kuypers 20. -
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. -
PGN/AN Verification for Legal Chess Gameplay
PGN/AN Verification for Legal Chess Gameplay Neil Shah Guru Prashanth [email protected] [email protected] May 10, 2015 Abstract Chess has been widely regarded as one of the world's most popular games through the past several centuries. One of the modern ways in which chess games are recorded for analysis is through the PGN/AN (Portable Game Notation/Algebraic Notation) standard, which enforces a strict set of rules for denoting moves made by each player. In this work, we examine the use of PGN/AN to record and describe moves with the intent of building a system to verify PGN/AN in order to check for validity and legality of chess games. To do so, we formally outline the abstract syntax of PGN/AN movetext and subsequently define denotational state-transition and associated termination semantics of this notation. 1 Introduction Chess is a two-player strategy board game which is played on an eight-by-eight checkered board with 64 squares. There are two players (playing with white and black pieces, respectively), which move in alternating fashion. Each player starts the game with a total of 16 pieces: one king, one queen, two rooks, two knights, two bishops and eight pawns. Each of the pieces moves in a different fashion. The game ends when one player checkmates the opponents' king by placing it under threat of capture, with no defensive moves left playable by the losing player. Games can also end with a player's resignation or mutual stalemate/draw. We examine the particulars of piece movements later in this paper. -
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. -
Flight Dynamics Model Exchange Standard [AIAA10]
! BSR/AIAA S-119-201X Proposed ANSI National Standard !"#$%&'()*+,#-.'/012"'34-%+*$2'5&+*1+61' ' ' ' ' Draft 2010-04-23 ' ' ' ' Sponsored by 7,26#-+*'8*.&#&9&2'0:'7260*+9&#-.'+*1'7.&60*+9&#-.' Approved XX Month 201X '' Abstract ;%#.'#.'+'.&+*1+61':06'&%2'#*&26-%+*$2'0:'.#,9"+�*',012"#*$'1+&+'<2&=22*':+-#"#.>';%2'#*#&#+"'0<?2-&#@2' #.'&0'+""0='2+.)A'.&6+#$%&:06=+61'24-%+*$2.'0:'.#,9"+�*',012"'#*:06,+�*'+*1'1+&+'<2&=22*':+-#"#.>'' ;%2'.&+*1+61'+BB"#2.'&0'@#6&9+"")'+*)'@2%#-"2',012"'C$609*1A'+#6'06'.B+-2DA'<9&',0.&'1#62-&")'+BB"#2.'&0' +#6-6+:&'+*1',#..#"2.> ! " ! ' ' ' ' ' ' ' ' ' LIBRARY OF CONGRESS CATALOGING DATA WILL BE ADDED HERE BY AIAA STAFF E9<"#.%21'<)' American Institute of Aeronautics and Astronautics 1801 Alexander Bell Drive, Reston, VA 20191 F0B)6#$%&'G'HIJK'7,26#-+*'8*.&#&9&2'0:'7260*+9&#-.'+*1' 7.&60*+9&#-.' 7""'6#$%&.'62.26@21' ' L0'B+6&'0:'&%#.'B9<"#-+�*',+)'<2'62B6019-21'#*'+*)':06,A'#*'+*'2"2-&60*#-'62&6#2@+"'.).&2,' 06'0&%26=#.2A'=#&%09&'B6#06'=6#&&2*'B26,#..#0*'0:'&%2'B9<"#.%26>' ' E6#*&21'#*'&%2'M*#&21'5&+&2.'0:'7,26#-+' ""! ! ! Contents F0*&2*&.>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ###' !062=061>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> #@' 8*&6019-�* >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> -
— I Believe Hostage the Most Interesting, Exciting Variant That Can Be Played with a Standard Chess Set. Mating Attacks Are the Norm
— I believe Hostage the most interesting, exciting variant that can be played with a standard chess set. Mating attacks are the norm. Anyone can hope to discover new principles and opening lines. Grandmaster Larry Kaufman 2008 World Senior Chess Champion — Fascinating, exciting, extremely entertaining—–what a wonder- ful new game! Grandmaster Kevin Spraggett Chess World Championship Candidate — Probably the most remarkable chess variant of the last fi ft y years. Captured men are hostages that can be exchanged. Play is rarely less than exciting, sometimes with several reversals of fortune. Dramatic mates are the rule, not the exception. D.B.Pritchard author of “Th e Encyclopedia of Chess Variants” — Chess is not yet played out, but it is no longer possible to perform at a high level without a detailed knowledge of openings. In Hostage Chess creativity and imagination fl ourish, and fun returns. Peter Coast Scottish Chess Champion — With only a few rule changes, Hostage Chess creates a marvelously exciting variant on the classical game. Lawrence Day International Chess Master — Every bit as intriguing as standard chess. Beautiful roads keep branching off in all directions, and sharp eyed beginners sometimes roll right over the experts. Robert Hamilton FIDE Chess Master Published 2012 by Aristophanes Press Hostage Chess Copyright © 2012 John Leslie. All rights reserved. No part of this publication may be reproduced, stored in a re- trieval system, or transmitted in any form or by any means, digital, electronic, mechanical, photocopying, recording, or otherwise, or conveyed via the Internet or a website without prior written per- mission of the author, except in the case of brief quotations em- bedded in critical articles and reviews.