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+P+-+K+- +-+-+-+- B -+-+P+-+ W -+-+-+-+ Zlw-+P+R +-+-+-Z- P+-+N+Q+ P+-+-+-+ +-+-+-+- Z-+K+-+- -+-+-TP+ Kwqs-Z-S +-+-+RM- +-+-+-+
Contents Symbols 4 Introduction 5 Part 1: The Basics 1 Pin 7 2 Deflection 16 3 Overload 23 4 Decoy 28 5 Double Attack 36 6 Knight Fork 44 7 Discovered Attack 50 8 Clearance 56 9 Obstruction 64 10 Removing the Defender 71 11 The Power of the Pawn 77 12 Back-Rank Mate 85 13 Stalemate 91 14 Perpetual Check and Fortresses 96 Part 2: Advanced Tactics 15 f7: Weak by Presumption 103 16 The Vulnerable Rook’s Pawn 111 17 Attacking the Fianchetto 118 18 The Mystery of the Opposite-Coloured Bishops 125 19 Chess Highways: Open Files 131 20 Trapping a Piece 141 21 Practice Makes Perfect 149 Solutions 158 Index of Players 188 Index of Composers 191 KNIGHT FORK 6 Knight Fork The knight is considered to be the least powerful White is now a queen and two rooks down – piece in chess (besides the pawn, of course). As a deficit of approximately 19 ‘pawns’. His only the great world champion Jose Raul Capablanca remaining piece is a knight. But a brave one... taught us, the other minor piece, the bishop, is 3 Ìe3+ Êf6 4 Ìxd5+ Êf5 5 Ìxe7+ Êf6 6 better in 90% of cases. However, due to its spe- Ìxg8+ (D) cific qualities the knight is a tremendously dan- gerous piece. It is nimble and its jumps can be -+-+-+N+ quite shocking. That is why a double attack by a +-+-+p+- knight is usually distinguished from other dou- B ble attacks and called a fork. -+-+nm-M +-+-z-+- A single knight may cause incredible dam- age in the right circumstances: -+-+-+-+ +-+-+PZ- -+-+-+q+ -+-+-+-+ +-+r+p+- +-+-+-+- W -+N+nm-M +-+rz-+- The knight has managed to remove most of Black’s army. -
1999/6 Layout
Virginia Chess Newsletter 1999 - #6 1 The Chesapeake Challenge Cup is a rotating club team trophy that grew out of an informal rivalry between two Maryland clubs a couple years ago. Since Chesapeake then the competition has opened up and the Arlington Chess Club captured the cup from the Fort Meade Chess Armory on October 15, 1999, defeating the 1 1 Challenge Cup erstwhile cup holders 6 ⁄2-5 ⁄2. The format for the Chesapeake Cup is still evolving but in principle the idea is that a defense should occur about once every six months, and any team from the “Chesapeake Bay drainage basin” is eligible to issue a challenge. “Choosing the challenger is a rather informal process,” explained Kurt Eschbach, one of the Chesapeake Cup's founding fathers. “Whoever speaks up first with a credible bid gets to challenge, except that we will give preference to a club that has never played for the Cup over one that has already played.” To further encourage broad participation, the match format calls for each team to field players of varying strength. The basic formula stipulates a 12-board match between teams composed of two Masters (no limit), two Expert, and two each from classes A, B, C & D. The defending team hosts the match and plays White on odd-numbered boards. It is possible that a particular challenge could include additional type boards (juniors, seniors, women, etc) by mutual agreement between the clubs. Clubs interested in coming to Arlington around April, 2000 to try to wrest away the Chesapeake Cup should call Dan Fuson at (703) 532-0192 or write him at 2834 Rosemary Ln, Falls Church VA 22042. -
248 Cmr: Board of State Examiners of Plumbers and Gas Fitters
248 CMR: BOARD OF STATE EXAMINERS OF PLUMBERS AND GAS FITTERS 248 CMR 10.00: UNIFORM STATE PLUMBING CODE Section 10.01: Scope and Jurisdiction 10.02: Basic Principles 10.03: Definitions 10.04: Testing and Safety 10.05: General Regulations 10.06: Materials 10.07: Joints and Connections 10.08: Traps and Cleanouts 10.09: Interceptors, Separators, and Holding Tanks 10.10: Plumbing Fixtures 10.11: Hangers and Supports 10.12: Indirect Waste Piping 10.13: Piping and Treatment of Special Hazardous Wastes 10.14: Water Supply and the Water Distribution System 10.15: Sanitary Drainage System 10.16: Vents and Venting 10.17: Storm Drains 10.18: Hospital Fixtures 10.19: Plumbing in Manufactured Homes and Construction Trailers 10.20: Public and Semi-public Swimming Pools 10.21: Boiler Blow-off Tank 10.22: Figures 10.23: Vacuum Drainage Systems 10.01: Scope and Jurisdiction (1) Scope. 248 CMR 10.00 governs the requirements for the installation, alteration, removal, replacement, repair, or construction of all plumbing. (2) Jurisdiction. (a) Nothing in 248 CMR 10.00 shall be construed as applying to: 1. refrigeration; 2. heating; 3. cooling; 4. ventilation or fire sprinkler systems beyond the point where a direct connection is made with the potable water distribution system. (b) Sanitary drains, storm water drains, hazardous waste drainage systems, dedicated systems, potable and non-potable water supply lines and other connections shall be subject to 248 CMR 10.00. 10.02: Basic Principles Founding of Principles. 248 CMR 10.00 is founded upon basic principles which hold that public health, environmental sanitation, and safety can only be achieved through properly designed, acceptably installed, and adequately maintained plumbing systems. -
Little Chess Evaluation Compendium by Lyudmil Tsvetkov, Sofia, Bulgaria
Little Chess Evaluation Compendium By Lyudmil Tsvetkov, Sofia, Bulgaria Version from 2012, an update to an original version first released in 2010 The purpose will be to give a fairly precise evaluation for all the most important terms. Some authors might find some interesting ideas. For abbreviations, p will mean pawns, cp – centipawns, if the number is not indicated it will be centipawns, mps - millipawns; b – bishop, n – knight, k- king, q – queen and r –rook. Also b will mean black and w – white. We will assume that the bishop value is 3ps, knight value – 3ps, rook value – 4.5 ps and queen value – 9ps. In brackets I will be giving purely speculative numbers for possible Elo increase if a specific function is implemented (only for the functions that might not be generally implemented). The exposition will be split in 3 parts, reflecting that opening, middlegame and endgame are very different from one another. The essence of chess in two words Chess is a game of capturing. This is the single most important thing worth considering. But in order to be able to capture well, you should consider a variety of other specific rules. The more rules you consider, the better you will be able to capture. If you consider 10 rules, you will be able to capture. If you consider 100 rules, you will be able to capture in a sufficiently good way. If you consider 1000 rules, you will be able to capture in an excellent way. The philosophy of chess Chess is a game of correlation, and not a game of fixed values. -
2020-21 Candidates Tournament ROUND 9
2020-21 Candidates Tournament ROUND 9 CATALAN OPENING (E05) easy to remove and will work together with the GM Anish Giri (2776) other pieces to create some long-term ideas. GM Wang Hao (2763) A game between two other top players went: 2020-2021 Candidates Tournament 14. Rac1 Nb4 15. Rfd1 Ra6 (15. ... Bxf3! 16. Bxf3 Yekaterinburg, RUS (9.3), 04.20.2021 c6 is the most solid approach in my opinion. I Annotations by GM Jacob Aagaard cannot see a valid reason why the bishop on f3 for Chess Life Online is a strong piece.) 16. Qe2 Nbd5 17. Nb5 Ne7 18. The Game of the Day, at least in terms of Nd2 Bxg2 19. Kxg2 Nfd5 20. Nc4 Ng6 21. Kh1 drama, was definitely GM Ding Liren versus Qe7 22. b3 Rd8 23. Rd2 Raa8 24. Rdc2 Nb4 25. GM Maxime Vachier-Lagrave. Drama often Rd2 Nd5 26. Rdc2, and the game was drawn in Ivanchuk – Dominguez Perez, Varadero 2016. means bad moves, which was definitely the case there. Equally important for the tournament 14. ... Bxg2 15. Kxg2 c6 16. h3!N 8. ... Bd7 standings was the one win of the day. GM Anish Giri moves into shared second place with this The bishop is superfluous and will be The real novelty of the game, and not a win over GM Wang Hao. exchanged. spectacular one. The idea is simply that the king The narrative of the game is a common one hides on h2 and in many situations leaves the 9. Qxc4 Bc6 10. Bf4 Bd6 11. -
Altogether Now in My Decades of Playing Sub-Optimal Chess, I Have
Altogether now In my decades of playing sub-optimal chess, I have been given several pieces of advice about how best to play simultaneous chess. I have faced several grandmasters over the board in simuls and tried to adopt these tips, but with very little success. In fact, no success. One suggestion was to tactically muddy the waters. The theory being if you play a closed positional game the GM (or whoever is giving the simul) will easily overcome you end in the end with their superior technique. On the other hand, although they are, of course, much better than you tactically if they have 20 odd other boards to focus on, effectively playing their moves at a rate akin to blitz, there is a chance they might slip up and give you some winning chances when faced with a messy position. This is fine in theory and may work well for those players stronger then myself who are adept at tactics but my record of my games shows a whopping nil points for me with this approach. In fact, I have found the opposite to be true. I am pleased to report that I have achieved a couple of draws from playing a completely blocked stagnant position. The key here has been to try to make the games last sufficiently long so that in the end then GM kindly offers you a draw in a desperate attempt to get his last bus home. Although loathsome this is when you want as many of those horrible creatures who play on when they are a rook and a bishop down with no compensation (or similar) to keep on playing against the GM. -
Grand Prix Proves to Be Right Formula
7.Ng1–f3 0–0 22... e7-e6 A better idea was 7...Bc8-g4, 23.Qg6-h7+ Kg8-f7 CHESS getting rid of the light-squared 24.f5xe6+ Bc8xe6 July 5th 2008 bishop which is hard to find 25.Rh3-h6 Qc7-e5 a good post for. Another 26.Qh7-g6+ Kf7-g8 Michael interesting option was 7...c5-c4, 27.Rf1xf6 Qe5-d4+ trying to create counterplay. 28.Rf6-f2 Adams Even with what feels like 8.0–0 b7-b6 an overwhelming position, Black doesn't sense any danger it is important to maintain and makes some quiet moves, concentration. The rook retreat but he should have paid more forced resignation but the attention to White’s plans. blunder 28.Kg1–h1 Qd4xf6 Grand Prix As we shall see he can quickly 29.Qg6xf6 Rd8-f8 would lead develop a strong initiative on to a roughly level position. the kingside. proves to be 1–0 9.Qd1–e1 Bc8-g4 right formula The worst possible moment The 2nd edition of Secrets of for this move as the knight is Spectacular Chess by Jonathan no longer pinned. 9...Nf6-d7 Levitt and David Friedgood Gawain Jones is the latest in was preferable although, after (Everyman, £14.99) is a slightly a long line of English players 10.f4-f5 there is trouble ahead expanded version of the 1999 who have specialised in for the Black monarch. original, in which they analysed meeting the Sicilian in an the beauty in chess. off-beat manner. He has 10.Nf3-e5 Qd8-c7 The book is especially shared his expertise in his 11.Qe1–h4 Bg4-e6 interesting to players with little first book, Starting Out: 12.Ne5-f3 h7-h6 experience of studies who will Sicilian Grand Prix Attack 12...Be6-c8 13.f4-f5 is no discover many paradoxical (Everyman, £14.99). -
Of Kings and Pawns
OF KINGS AND PAWNS CHESS STRATEGY IN THE ENDGAME ERIC SCHILLER Universal Publishers Boca Raton • 2006 Of Kings and Pawns: Chess Strategy in the Endgame Copyright © 2006 Eric Schiller All rights reserved. Universal Publishers Boca Raton , Florida USA • 2006 ISBN: 1-58112-909-2 (paperback) ISBN: 1-58112-910-6 (ebook) Universal-Publishers.com Preface Endgames with just kings and pawns look simple but they are actually among the most complicated endgames to learn. This book contains 26 endgame positions in a unique format that gives you not only the starting position, but also a critical position you should use as a target. Your workout consists of looking at the starting position and seeing if you can figure out how you can reach the indicated target position. Although this hint makes solving the problems easier, there is still plenty of work for you to do. The positions have been chosen for their instructional value, and often combined many different themes. You’ll find examples of the horse race, the opposition, zugzwang, stalemate and the importance of escorting the pawn with the king marching in front, among others. When you start out in chess, king and pawn endings are not very important because usually there is a great material imbalance at the end of the game so one side is winning easily. However, as you advance through chess you’ll find that these endgame positions play a great role in determining the outcome of the game. It is critically important that you understand when a single pawn advantage or positional advantage will lead to a win and when it will merely wind up drawn with best play. -
1 Najdorf Sicilian Focus on the Critical D5 Squar One the Most Common Openings in the Past 50 Years Is the Najdorf Variation Of
1 Najdorf Sicilian will try to keep full control over the d5 Focus on the Critical d5 Squar square, and try to maintain the possibility of placing and keeping a piece One the most common openings in the on d5. Fully controlling the d5 square past 50 years is the Najdorf variation of allows white to affect both sides of the the Sicilian Defense. The Najdorf offers board. In order to assure that control, many different possibilities, starting from white wants to trade off black pieces extremely sharp, poison pawn variation that can control d5. For example, he (1. e4, c5 2. nf3 d6 3. d4 cxd4 4. Nxd4 wants to play with Bg5, in order to trade Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Qb6 8. off the Knight on f6. He also will Qd2 Qxb2! ) to extremely positional lines increase the number of his own pieces (1. e4, c5 2. nf3 d6 3. d4 cxd4 4. Nxd4 that can control d5, with maneuvers like Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 ... ) bishop to c4, then b3, and the knight on Somewhere between those two lines is f3 going to d2-c4-e3. It seems that white the following position, which I will try to has full control of the situation. So why explain. 1.e4 c5 2.Nf3 d6 3.d4 cxd4 does black choose to create this pawn 4.Nxd4 Nf6 5.Nc3 a6 6.Be3 e5 7.Nf3 structure? The answer is because this is Diagram one of the rare Sicilian pawn structures abcdef gh that gives the black side a slight space advantage. -
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. -
Chess Strategies for Beginners II Top Books for Beginners Chess Thinking
Chess Strategies for Beginners II Stop making silly Moves! Learn Chess Strategies for Beginners to play better chess. Stop losing making dumb moves. "When you are lonely, when you feel yourself an alien in the world, play Chess. This will raise your spirits and be your counselor in war." Aristotle Learn chess strategies first at Chess Strategies for Beginners I. After that come back here. Chess Formation Strategy I show you now how to start your game. Before you start to play you should know where to place your pieces - know the right chess formation strategy. Where do you place your pawns, knights and bishops, when do you castle and what happens to the queen and the rooks. When should you attack? Or do you have to attack at all? Questions over questions. I will give you a rough idea now. Please study the following chess strategies for beginners carefully. Read the Guidelines: Chess Formation Strategy. WRITE YOUR REVIEW ASK QUESTIONS HERE! Top Books For Beginners For beginners I recommend Logical Chess - Move by Move by Chernev because it explains every move. Another good book is the Complete Idiot's Guide to Chess that received very good reviews. Chess Thinking Now try to get mentally into the real game and try to understand some of the following positions. Some are difficult to master, but don't worry, just repeat them the next day to get used to chess thinking. Your brain has to adjust, that's all there is to it. Win some Positions here! - Chess Puzzles Did you manage it all right? It is necessary that you understand the following basic chess strategies for beginners called - Endgames or Endings, using the heavy pieces.(queen and rook are called heavy pieces) Check them out now! Rook and Queen Endgames - Basic Chess Strategies How a Beginner plays Chess Replay the games of a beginner. -
IRISH CHESS JOURNAL October 2010
IRISH CHESS JOURNAL October 2010 Dun Laoghaire Centenary Masters Tournaments L to R: Manca, Quinn, Fitzsimons, Griffiths, Collins, Hebden, Daly, Atlas, Baburin, Moskow, Short, Ansell, Tvarijonas, Astaneh Lopez, Rochev, Bischoff, Heidenfeld, Cech, Brady, Rodriguez Lopez Highlights of this issue: Robinson Crusoe GM p. 4 Chess Spy p. 5 Irish Championship p. 6 KO by Kevin O’Connell p. 14 4NCL Best Annotated Games Prize p. 15 Sam Collins Interview p. 22 Dun Laoghaire Chess Festival p. 25 IRISH CHESS Are you a JOURNAL Editor : Tony Foley Problem Contributors: Solver? Gerry Graham, IM Mark Orr, Kevin O’Connell, Sean Coffey, John McKenna, Peter Cafolla, Colm Daly, Jonathan O’Connor, Jim Olney, GM Alexander Baburin, IM Malcolm Pein and GM Michael Adams. The Irish Chess Journal is the official newsletter of the Irish Chess Union. The opinions expressed herein are strictly those of the contributors and do not necessarily reflect the views of the Irish Chess Union. #5 D’Orville Published quarterly and distributed (online) Le Palamede, 1837 at www.icu.ie to members of the Irish Chess Union. The editor would like to express his gratitude to everyone who contributed to this issue, and apologise if I’ve forgotten anyone! Re-launching the defunct Irish Chess Journal was not an easy decision to make as IM Mark Orr has produced an immensely useful website. However, I felt that people may want an alternative. #5 Walter Grimshaw The Illustrated London News, 1850 Chess Today is a daily newspaper delivered by email. A typical Chess Today email contains three attachments, these are a PDF newsletter containing games, a test-yourself puzzle and the latest news from tournaments plus two other files that are a selection of games in CBV and PGN formats that can be read by your chess program or text file.