22:
1350:, typically present the solver with a diagram position and a question. In order to answer the question, the solver must work out the history of the position, that is, must work backwards from the given position to the previous move or moves that have been played. A problem employing retrograde analysis may, for example, present a position and ask questions like "What was White's last move?", "Has the bishop on c1 moved?", "Is the black knight actually a promoted pawn?", "Can White castle?", etc. Some retrograde analysis may also have to be employed in more conventional problems (directmates and so on) to determine, for example, whether an
2409:
occasion finish in at least tenth place three times within ten successive WCSCs. For the IM title they must score at least 80 percent of the winner's points and each time finish in at least fifteenth place twice within five successive WCSCs; alternatively, winning a single WCSC or scoring as many points as the winner in a single WCSC will earn the IM title. For the FM title, the solver must score at least 75 percent of the winners points and each time finish within the top 40 percent of participants in any two PCCC-approved solving competitions.
1790:, a situation in which the player must move, yet every move leads to a disadvantage. Each of Black's nineteen legal replies allows an immediate mate. For example, if Black defends with 1...Bxh7, the d5-square is no longer guarded, and White mates with 2.Nd5#. Or if Black plays 1...Re5, Black blocks that escape square for his king allowing 2.Qg4#. If Black plays 1...Rf6, then 2.Rh4#. Yet if Black could only pass (i.e., make no move at all), White would have no way to mate on his second move. The full solution is as follows:
2405:. These albums are collections of the best problems and studies composed in a particular three-year period, as selected by FIDE-appointed judges from submitted entries. Each problem published in an album is worth 1 point; each study is worth 1⅔; joint compositions are worth the same divided by the number of composers. For the FIDE Master title, a composer must accumulate 12 points; for the International Master title, 25 points are needed; and for the Grandmaster title, a composer must have 70 points.
2285:. In formal tourneys, the competing problems are not published before they are judged, while in informal tourneys they are. Informal tourneys are often run by problem magazines and other publications with a regular problem section; it is common for every problem to have been published in a particular magazine within a particular year to be eligible for an informal award. Formal tourneys are often held to commemorate a particular event or person. The
2190:'s airings from the World Championships in Dubai 2021, calls for White to move and give immediate checkmate in just a single move. The trick is to recognize that despite the arrangement of the Black men, the board is actually viewed from the White side (as shown by the Black king standing on a square of its own color, rather than on the opposite color as in the standard opening position). Thus the solution is 1 Nd3#; the Black pawns are moving
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1474:), but at the same time make available an equal or greater number of flight squares are acceptable. Key moves which prevent the enemy from playing a checking move are also undesirable, particularly in cases where there is no mate provided after the checking move. In general, the weaker (in terms of ordinary over-the-board play) the key move is the less obvious it will be, and hence the more highly prized it will be.
54:
1489:. There are more subtle cases: if f1 is empty, a white bishop stands on b5 and there are white pawns on e2 and g2, then the bishop must be a promoted pawn (there is no way the original bishop could have gotten past those unmoved pawns). A piece such as this, which does not leave a player with pieces additional to those at the start of a game, but which nonetheless must have been promoted, is called
4485:
1362:: the solver is given a position and must construct a game, starting from the normal game array, which ends in that position. The two sides cooperate to reach the position, but all moves must be legal. Usually the number of moves required to reach the position is given, though sometimes the task is simply to reach the given position in the smallest number of moves.
2313:(that is, that an identical problem, or nearly so, had been published at an earlier date) or unsound (i.e., that a problem has cooks or no solution). If such claims are upheld, the award may be adjusted accordingly. At the end of this period, the award becomes final. It is normal to indicate any honour a problem has received when it is republished.
497:– that is, it has not been taken from an actual game, but has been invented for the specific purpose of providing a problem. Although a constraint on orthodox chess problems is that the original position be reachable via a series of legal moves from the starting position, most problem positions would not arise in over-the-board play.
1868:. This arrangement is designed to illustrate the effect of mutual Black interferences: for example, consider what happens after the key if Black plays 1...Bf7. White now mates with 2.Qf5#, a move which is only possible because the bishop Black moved has got in the way of the rook's guard of f5 – this is known as a
2321:
Solving tournaments also fall into two main types. In tourneys conducted by correspondence, the participants send their entries by post or e-mail. These are often run on similar terms to informal composition tourneys; indeed, the same problems which are entries in the informal composition tourney are
1423:
wrote about the "originality, invention, conciseness, harmony, complexity, and splendid insincerity" of creating chess problems and spent considerable time doing so. There are no official standards by which to distinguish a beautiful problem from a poor one and such judgments can vary from individual
1296:
positions. Studies are composed chess problems, but because their stipulation is open-ended (the win or draw does not have to be achieved within any particular number of moves) they are usually thought of as distinct from problems and as a form of composition that is closer to the puzzles of interest
2305:
theme, problems using fewer than nine units). Honours are usually awarded in three grades: these are, in descending order of merit, prizes, honourable mentions, and commendations. As many problems as the judge sees fit may be placed in each grade, and the problems within each grade may or may not be
1390:
section; the unique solution is 1.d4 c6 2.Kd2 Qa5+ 3.Kd3 Qa3+ 4.Kc4 b5#). Some construction tasks ask for a maximum or minimum number of effects to be arranged, for example a game with the maximum possible number of consecutive discovered checks, or a position in which all sixteen pieces control the
2408:
For solvers, the GM and IM titles were both first awarded in 1982; the FM title followed in 1997. GM and IM titles can only be gained by participating in the official World Chess
Solving Championship (WCSC): to become a GM, a solver must score at least 90 percent of the winner's points and on each
1860:
The thematic approach to solving is to notice then that in the original position, Black is already almost in zugzwang. If Black were compelled to play first, only Re3 and Bg5 would not allow immediate mate. However, each of those two moves blocks a flight square for the black king, and once White
535:
Problems can be contrasted with tactical puzzles often found in chess columns or magazines in which the task is to find the best move or sequence of moves (usually leading to mate or gain of material) from a given position. Such puzzles are often taken from actual games, or at least have positions
2253:
These are combined with a number to indicate in how many moves the goal must be achieved. "#3", therefore, indicates a mate in three, while "ser-h=14" indicates a series help stalemate in 14 (i.e., Black makes 14 moves in a row such that White can subsequently make one move to deliver stalemate).
1501:), except in rare cases where this is part of the theme. If the theme can be shown with fewer total units, it should be. For another, the problem should not employ more moves than is needed to exhibit the particular theme(s) at its heart; if the theme can be shown in fewer moves, it should be.
1496:
The problem should be economical. There are several facets to this desideratum. For one thing, every piece on the board should serve a purpose, either to enable the actual solution, or to exclude alternative solutions. Extra units should not be added to create "red herrings" (this is called
2333:
In both types of tourney, each problem is worth a specified number of points, often with bonus points for finding cooks or correctly claiming no solution. Incomplete solutions are awarded an appropriate proportion of the points available. The solver amassing the most points is the winner.
2325:
Other solving tourneys are held with all participants present at a particular time and place. They have only a limited amount of time to solve the problems, and the use of any solving aid other than a chess set is prohibited. The most notable tournament of this type is the
1428:
The problem position must be legal. That is to say, the diagram must be reachable by legal moves beginning with the initial game array. It is not considered a defect if the diagram can only be reached via a game containing what over-the-board players would consider gross
1469:
The key move of the solution should not be obvious. Obvious moves such as checks, captures, and (in directmates) moves which restrict the movement of the black king make for bad keys. Keys which deprive the black king of some squares to which it could initially move
480:
exercises on the other. In practice, however, the distinction is very clear. There are common characteristics shared by compositions in the problem section of chess magazines, in specialist chess problem magazines, and in collections of chess problems in book form.
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to individual as well as from generation to generation. Such variation is to be expected when it comes to aesthetic appraisal. Nevertheless, modern taste generally recognises the following elements to be important in the aesthetic evaluation of a problem:
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often also set in the solving tourney. It is impossible to eliminate the use of computers in such tournaments, though some problems, such as those with particularly long solutions, will not be well-suited to solution by computer.
2296:
In both formal and informal tourneys, entries will normally be limited to a particular genre of problem (for example, mate in twos, moremovers, helpmates) and may or may not have additional restrictions (for example, problems in
2202:
For reasons of space and internationality, various abbreviations are often used in chess problem journals to indicate a problem's stipulation (whether it is a mate in two, helpmate in four, or whatever). The most common are:
518:
in its construction: no greater force is employed than that required to render the problem sound (that is, to guarantee that the problem's intended solution is indeed a solution and that it is the problem's only
1448:
or defective. (Exceptions are problems which are composed to have more than one solution which are thematically related to one another in some way; this type of problem is particularly common in helpmates.)
2185:
Although most problems call for straightforward (though possibly difficult) solution, occasionally a problem will involve a humorous trick or twist. The problem at right, shown in
Norwegian broadcaster
526:. Problems are experienced not only as puzzles but as objects of beauty. This is closely related to the fact that problems are organised to exhibit clear ideas in as economical a manner as possible.
2358:(PCCC) for especially distinguished problem and study composers and solvers (unlike over-the-board chess, however, there have not been any women-only equivalents to these titles in problem chess).
1872:. Similarly, if Black tries 1...Rf7, this interferes with the bishop's guard of d5, allowing White to mate with Nd5#. Mutual interferences like this, between two pieces on one square, are known as
1337:
Of far greater relation to standard chess problems, however, are the following, which have a rich history and have been revisited many times, with magazines, books and prizes dedicated to them:
445:
play in that the latter involves a struggle between Black and White, whereas the former involves a competition between the composer and the solver. Most positions which occur in a chess problem
2286:
1297:
to over-the-board players. Indeed, composed studies have often extended our knowledge of endgame theory. But again, there is no clear dividing line between the two kinds of positions.
2694:. A general overview of chess problems, including an extensive A–Z of themes and terms, and 460 problems. Widely regarded as the best single-volume work in English on the subject.
2679:
2633:
1462:
The solution should illustrate a theme or themes, rather than emerging from disjointed calculation. Many of the more common themes have been given names by problemists (see
1408:
1258:: one side makes a series of moves without reply to achieve a stipulated aim. Check may not be given except on the last move. A seriesmover may take various forms:
2355:
2290:
2370:
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ranked (so an award may include a 1st
Honourable Mention, a 2nd Honourable Mention, and a 3rd Honourable Mention, or just three unranked Honourable Mentions).
2401:) and the FM title (first awarded 1990) has been determined on the basis of the number of problems or studies a composer had selected for publication in the
2528:
Iqbal, A. (2008). Evaluation of
Economy in a Zero-sum Perfect Information Game, The Computer Journal, Oxford University Press, Vol. 51, No. 4, pp. 408–418,
1180:
is the number of moves within which mate must be delivered. In composing and solving competitions, directmates are further broken down into three classes:
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2398:
2366:
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which look as if they could have arisen during a game, and are used for instructional purposes. Most such puzzles fail to exhibit the above features.
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1459:. Duals are often tolerated if the problem is strong in other regards and if the duals occur in lines of play that are subsidiary to the main theme.
2593:
2390:
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being the first honorary recipients. In subsequent years, qualification for the IM title, as well as for the GM title (first awarded in 1972 to
433:, which presents the solver with a particular task. For instance, a position may be given with the instruction that White is to move first, and
1419:
in the appreciation of chess problems is very significant, and indeed most composers and solvers consider such compositions to be an art form.
1230:
2374:
1481:
pawns in the initial position. For example, if White has three knights, one of them must clearly have been promoted; the same is true of two
2597:
1172:: White to move first and checkmate Black within a specified number of moves against any defence. These are often referred to as "mate in
2540:
4265:
1864:
The arrangement of the black rooks and bishops, with a pair of adjacent rooks flanked by a pair of bishops, is known to problemists as
2413:
1391:
minimum number of squares. A special class are games uniquely determined by their last move like "3...Rxe5+" or "4...b5#" from above.
1370:: no diagram is given in construction tasks; instead, the aim is to construct a game or position with certain features. For example,
2309:
After an award is published, there is a period (typically around three months) in which individuals may claim honoured problems are
3822:
511:(or combination of themes) that the problem has been composed to illustrate: chess problems typically instantiate particular ideas.
1322:
There are several other types of chess problem which do not fall into any of the above categories. Some of these are really coded
4280:
4240:
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1876:
interferences, and are the theme of this problem. The problem exhibits four such interferences, on squares e6, e7, f6, and f7.
1861:
has removed his rook from h2 White can put some other piece on that square to deliver mate: 1...Re3 2.Bh2# and 1...Bg5 2.Qh2#.
1282:: a reflexmate in which White plays a series of moves leading to a position in which Black can, and therefore must, give mate.
4255:
2713:
2513:
2257:
In studies, the symbols "+" and "=" are used to indicate "White to play and win" and "White to play and draw" respectively.
3812:
2622:. A preliminary section of 30 pages is a useful introduction for novice solvers; there follow 112 problems with discussion.
2435:
4200:
4063:
4053:
3817:
1374:
devised the problem: "Construct a game which ends with black delivering discovered checkmate on move four" (published in
4338:
3808:
3803:
1330:, in which one is to determine the path of a knight that visits each square of the board exactly once. Another is the
1155:
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1270:: a helpmate in which Black plays a series of moves without reply after which White plays one move to checkmate Black.
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4175:
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395:
1382:), the Black ones are not. A unique problem is: "Construct a game with black b-pawn checkmating on move four" (from
1319:
to be legal, unless it can be proved that the pawn to be captured must have moved two squares on the previous move.
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4043:
2793:
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1493:. The presence of obtrusive units constitutes a smaller flaw than the presence of more obviously promoted units.
1276:: a selfmate in which White plays a series of moves leading to a position in which Black is forced to give mate.
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4215:
4210:
2878:
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476:
is not sharply defined: there is no clear demarcation between chess compositions on the one hand and puzzle or
1292:: an orthodox problem in which the stipulation is that White to play must win or draw. Almost all studies are
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4270:
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problem, in which eight queens are to be placed on the board so that none is attacking any of the others.
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The key move is 1.Rh1. This is difficult to find because it makes no threat – instead, it puts Black in
1218:: Black to move first cooperates with White to get Black's own king mated in a specified number of moves.
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1378:, 1866 – the solution is 1.f3 e5 2.Kf2 h5 3.Kg3 h4+ 4.Kg4 d5#); while all White moves are unique (see
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504:, that is, a goal to be achieved; for example, to checkmate Black within a specified number of moves.
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in the sense that they are very unlikely to occur in over-the-board play. There is a good deal of
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884:(When a black knight can move to the maximum number of eight squares like this, it is known as a
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is given to individuals considered capable of judging composing tourneys at the highest level.
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Black in two moves against any possible defence. A chess problem fundamentally differs from
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1326:, expressed using the geometry and pieces of the chessboard. A famous such problem is the
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1226:: White moves first and forces Black (in a specified number of moves) to checkmate White.
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pawn capture or castling is possible. The most important subset of retro problems are:
1246:
give mate if it is able to do so. When this stipulation applies only to Black, it is a
357:
137:
1234:: White to move first cooperates with Black to get a position of selfmate in one move.
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4308:
4120:
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1264:: a directmate with White playing a series of moves without reply to checkmate Black.
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128:
109:
104:
1192:: White to move and checkmate Black in no more than three moves against any defence.
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2604:. A collection of 170 proof games (published in Germany, but written in English).
2544:
2506:
Chess
Mysteries of Sherlock Holmes: Fifty tantalizing problems of chess detection
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489:
Not every chess problem has every one of these features, but most have several:
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For composition, the
International Master title was established in 1959, with
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To the right is a directmate problem composed by Thomas
Taverner in 1881.
1309:(see below) that the rook in question or king must have previously moved.
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2706:
The definitive book - Encyclopedia of Chess
Problems: Themes and Terms
1395:
Across most of the above genres, there is great interest in exploring
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3307:
3196:
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1186:: White to move and checkmate Black in two moves against any defence.
434:
326:
229:
216:
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3156:
2716:. An extensive overview A–Z of themes and terms with 1726 problems.
1787:
1451:
Ideally, in directmates, there should be a unique White move after
1371:
1302:
1222:
1214:
16:
Chess composition whose solution is a mate or other clear objective
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311:
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2269:) exist for both the composition and solving of chess problems.
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2289:(WCCT) is a formal tourney for national teams organised by the
1242:: a form of selfmate with the added stipulation that each side
234:
81:
45:
1455:
Black move. A choice of White moves (other than the key) is a
1407:
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2302:
1440:) must be unique. A problem which has two keys is said to be
427:
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202:
2538:
http://comjnl.oxfordjournals.org/content/51/4/408.abstract
1851:
1...Rxe2+, 2.Nxe2# (allows capture on unguarded square e2)
2187:
451:
specialized jargon used in connection with chess problems
4484:
2719:
1845:
1...Re4, 2.fxe4# (allows pawn capture discovering check)
2356:
Permanent
Commission of the FIDE for Chess Compositions
2291:
Permanent
Commission of the FIDE for Chess Compositions
1399:, in which non-standard boards, pieces or rules apply.
1839:
1...Re6, 2.Nd5# (interferes with bishop’s guard of d5)
1836:
1...Re7, 2.Rh4# (interferes with bishop’s guard of h4)
1830:
1...Rf6, 2.Rh4# (interferes with bishop’s guard of h4)
1827:
1...Rf7, 2.Nd5# (interferes with bishop’s guard of d5)
1153:
Mate in 267 moves; the longest moremover without
2676:. Problems seen from the point of view of the solver.
1165:
There are various different types of chess problems:
1818:
1...Bf6, 2.Qf5# (interferes with rook’s guard of f5)
1803:
1...Bf7, 2.Qf5# (interferes with rook’s guard of f5)
1305:
is assumed to be allowed unless it can be proved by
2459:"OzProblems - Australian chess problem composition"
1815:
1...Be7, 2.e3# (interferes with rook’s guard of e3)
1806:
1...Be6, 2.e3# (interferes with rook’s guard of e3)
4507:
1880:
1521:
903:
555:
2536:. Online ISSN 1460-2067, Print ISSN 0010-4620.
2194:the board and cannot capture the White knight.
2686:, Batsford / International Chess Enterprises.
1432:The first move of the problem's solution (the
2735:
2684:Chess Wizardry: The New ABC of Chess Problems
2225:", the French for stalemate, is used instead)
1411:Black mating on move 5 by promoting to knight
1379:
1208:is some particular number greater than three.
389:
2658:. Concentrates on maximum tasks and records.
2503:
1848:1...Re3, 2.Bh2# (blocks king’s flight to e3)
1842:1...Re5, 2.Qg4# (blocks king’s flight to e5)
1821:1...Bg5, 2.Qh2# (blocks king’s flight to g5)
2574:. An encyclopedia of unorthodox and 'chess
2475:
2342:Just as in over-the-board play, the titles
1402:
2742:
2728:
2272:
396:
382:
2414:International Judge of Chess Compositions
1315:captures, on the other hand, are assumed
2482:"267 moves – Lutz Neweklowsky 2001"
2480:; Karrer, P.; Formánek, Bedrich (eds.).
1406:
20:
2072:
2065:
2044:
2037:
1953:
1939:
1932:
1678:
1664:
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1594:
1587:
1566:
1200:: White to move and checkmate Black in
1039:
1011:
1004:
997:
983:
955:
948:
733:
726:
705:
698:
677:
670:
614:
4508:
2638:Chess Problems: Introduction to an Art
2590:. Chess and Chess Problems in fiction.
2316:
2051:
1946:
1615:
990:
962:
740:
635:
2723:
2508:. Puzzles & Games. Random House.
2079:
2058:
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2016:
2009:
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628:
621:
607:
600:
591:
2564:Book of Extraordinary Chess Problems
2453:
2451:
2436:Software for handling chess problems
539:
1387:
1346:: such problems, often also called
1301:In all the above types of problem,
530:
13:
2553:
1505:
14:
4532:
2648:Chess Problems: Tasks and Records
2448:
1204:moves against any defence, where
4483:
4154:List of strong chess tournaments
2328:World Chess Solving Championship
2287:World Chess Composing Tournament
2197:
2078:
2071:
2064:
2057:
2050:
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52:
3132:Gökyay Association Chess Museum
2646:(1995; revised edition, 2001),
1384:Shortest construction tasks map
2522:
2497:
2469:
2260:
1833:1...Rf5, 2.Qxf5# (unguards f5)
1824:1...Bh4, 2.Rxh4# (unguards h4)
1812:1...Bxc7, 2.Rh4# (unguards h4)
1809:1...Bd5, 2.Nxd5# (unguards d5)
1800:1...Bxh7, 2.Nd5# (unguards d5)
548:Hampstead and Highgate Express
1:
4252:Computer chess championships
2441:
467:
2354:are awarded by FIDE via the
2277:Composition tourneys may be
1854:1...c3, 2.Nd3# (unguards d3)
1343:Retrograde analysis problems
7:
4034:Bishop and knight checkmate
2612:How To Solve Chess Problems
2476:Neweklowsky, Lutz (2001) .
2419:
484:
10:
4537:
4197:Other world championships
455:
422:set by the composer using
4478:
4388:
4291:
4144:
4044:Opposite-coloured bishops
4024:
3970:
3833:
3675:
3615:
3606:
3517:
3385:
3246:
3147:
2983:
2887:
2757:
2749:
2587:The Emperor of Ocean Park
2337:
2330:, organised by the PCCC.
2179:White mates in one move!
1464:chess problem terminology
4171:World Chess Championship
3137:World Chess Hall of Fame
2265:Various tournaments (or
1403:Beauty in chess problems
1380:Beauty in chess problems
462:to describe chess moves.
30:Adolphe Alexandre Lesrel
4465:Simultaneous exhibition
4375:Chess newspaper columns
4064:Rook and bishop vs rook
4054:Queen and pawn vs queen
2668:, Gambit Publications.
2494:without obtrusive units
2301:, problems showing the
2273:Composition tournaments
896:Lutz Neweklowsky, 2001
3920:Richter–Veresov Attack
3908:Queen's Indian Defence
2614:, Dover Publications.
1412:
552:1905–1906 (1st Prize)
32:
26:An Interesting Problem
4181:Candidates Tournament
4069:Rook and pawn vs rook
4039:King and pawn vs king
3990:List of chess gambits
3893:King's Indian Defence
3571:Isolated Queen's Pawn
3095:List of chess players
3037:Top player comparison
2836:Internet chess server
2534:10.1093/comjnl/bxm060
2504:Smullyan, R. (1994).
1514:Dubuque Chess Journal
1410:
1324:mathematical problems
850:(threatening 2.Nc3)
514:The problem exhibits
24:
3898:Nimzo-Indian Defence
3794:Scandinavian Defense
3755:Semi-Italian Opening
3660:King's Indian Attack
3549:first-move advantage
3202:Threefold repetition
3127:Bobby Fischer Center
3012:Charlemagne chessmen
3006:Göttingen manuscript
2970:
2811:Correspondence chess
2602:Shortest Proof Games
2371:Alexander Gerbstmann
2348:International Master
1485:light-square bishops
1482:
1444:and is judged to be
1417:aesthetic evaluation
1359:Shortest proof games
1154:
500:There is a specific
438:
4126:Two knights endgame
3878:Bogo-Indian Defence
3765:Two Knights Defense
3705:Nimzowitsch Defence
3395:Artificial castling
3032:Soviet chess school
2907:Dubrovnik chess set
2708:, Chess Informant.
2650:, Faber and Faber.
2317:Solving tournaments
2246:"ser-" abbreviates
1778:White mates in two
1477:There should be no
1307:retrograde analysis
900:& Karrer 2000)
358:Nikoli puzzle types
40:Part of a series on
4356:endgame literature
3903:Old Indian Defense
3813:Accelerated Dragon
3685:Alekhine's Defence
3417:Checkmate patterns
3286:symbols in Unicode
3281:annotation symbols
3044:Geography of chess
2912:Staunton chess set
2698:Velimirovic, Milan
2630:Matthews, R. C. O.
2608:Howard, Kenneth S.
2543:2016-06-08 at the
2463:www.ozproblems.com
1499:dressing the board
1413:
1368:Construction tasks
842:White mates in two
460:algebraic notation
458:This article uses
363:Puzzle video games
348:Impossible puzzles
244:Puzzle video games
33:
4503:
4502:
4380:Chess periodicals
4309:Chess in the arts
4241:Chess composition
4079:Philidor position
4020:
4019:
3962:Trompowsky Attack
3945:Semi-Slav Defence
3835:Queen's Pawn Game
3715:Four Knights Game
3690:Caro–Kann Defence
3655:Zukertort Opening
3442:Discovered attack
3162:Cheating in chess
2999:Versus de scachis
2714:978-86-7297-064-7
2582:Stephen L. Carter
2515:978-0-8129-2389-6
2387:Genrikh Kasparyan
2221:", standing for "
2177:
2176:
1870:self-interference
1776:
1775:
1518:1889 (1st Prize)
1151:
1150:
838:
837:
545:Godfrey Heathcote
540:Types of problems
416:chess composition
406:
405:
267:
266:
4528:
4490:Chess portal
4488:
4487:
4431:Leela Chess Zero
4362:Oxford Companion
4314:early literature
4304:Chess aesthetics
4049:Pawnless endgame
4000:Bongcloud Attack
3978:List of openings
3950:Chigorin Defense
3888:Grünfeld Defence
3799:Sicilian Defence
3745:Ponziani Opening
3740:Philidor Defence
3735:Petrov's Defence
3677:King's Pawn Game
3650:Larsen's Opening
3613:
3612:
2974:
2744:
2737:
2730:
2721:
2720:
2666:Solving in Style
2576:lateral thinking
2560:Addison, Stephen
2547:
2526:
2520:
2519:
2501:
2495:
2489:
2473:
2467:
2466:
2455:
2431:Chess aesthetics
2399:Eeltje Visserman
2395:Comins Mansfield
2367:Arnoldo Ellerman
2240:"r" abbreviates
2234:"s" abbreviates
2228:"h" abbreviates
2213:"=" abbreviates
2207:"#" abbreviates
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1511:Thomas Taverner
1486:
1421:Vladimir Nabokov
1280:Seriesreflexmate
1207:
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904:
898:(after Thompson
846:Solution: 1.Rcc7
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556:
531:Tactical puzzles
522:The problem has
493:The position is
442:
414:, also called a
398:
391:
384:
353:Maze video games
342:
307:Packing problems
302:Optical illusion
280:
69:
68:
65:
56:
37:
36:
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4529:
4527:
4526:
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4505:
4504:
4499:
4482:
4474:
4384:
4370:Chess libraries
4287:
4191:FIDE Grand Prix
4186:Chess World Cup
4140:
4136:Wrong rook pawn
4074:Lucena position
4016:
3966:
3883:Catalan Opening
3858:English Defence
3843:Budapest Gambit
3829:
3787:Austrian Attack
3671:
3640:English Opening
3602:
3598:School of chess
3581:Minority attack
3513:
3482:Queen sacrifice
3381:
3242:
3238:White and Black
3233:Touch-move rule
3192:Perpetual check
3187:Fifty-move rule
3143:
2979:
2976:
2883:
2753:
2748:
2626:Lipton, Michael
2594:Frolkin, Andrei
2556:
2554:Further reading
2551:
2550:
2545:Wayback Machine
2527:
2523:
2516:
2502:
2498:
2474:
2470:
2457:
2456:
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2217:(occasionally "
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1577:
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1512:
1508:
1506:Example problem
1488:
1405:
1248:semi-reflexmate
1205:
1201:
1177:
1173:
1163:
1162:
1161:
1160:
1157:obtrusive units
1058:
1057:
1050:
1043:
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1001:
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987:
980:
973:
966:
959:
952:
942:
901:
899:
897:
893:
892:
891:
890:
889:
881:1...Rc5 2.Rxc5#
878:1...Rxa4 2.Rc5#
872:1...Ne2 2.Qxh5#
863:1...Ne6 2.Red7#
860:1...Nc6 2.Rcd7#
854:1...Nxb3 2.Qd3#
843:
745:
744:
737:
730:
723:
716:
709:
702:
695:
688:
681:
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551:
546:
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533:
524:aesthetic value
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402:
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343:
340:
333:
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317:Problem solving
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201:
148:Disentanglement
66:
63:
34:
17:
12:
11:
5:
4534:
4524:
4523:
4521:Chess problems
4518:
4516:Chess endgames
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4500:
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4497:
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4479:
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4473:
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4462:
4457:
4456:
4455:
4450:
4440:
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4438:
4433:
4428:
4423:
4413:
4411:Chess composer
4408:
4403:
4398:
4392:
4390:
4386:
4385:
4383:
4382:
4377:
4372:
4367:
4366:
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4266:North American
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4238:
4233:
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4223:
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4213:
4208:
4203:
4195:
4194:
4193:
4188:
4183:
4178:
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4166:
4159:Chess Olympiad
4156:
4150:
4148:
4142:
4141:
4139:
4138:
4133:
4128:
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4118:
4113:
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4111:
4106:
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4076:
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4046:
4041:
4036:
4030:
4028:
4022:
4021:
4018:
4017:
4015:
4014:
4013:
4012:
4010:Scholar's mate
4007:
4002:
3992:
3987:
3986:
3985:
3974:
3972:
3968:
3967:
3965:
3964:
3959:
3954:
3953:
3952:
3947:
3942:
3937:
3932:
3925:Queen's Gambit
3922:
3917:
3912:
3911:
3910:
3905:
3900:
3895:
3890:
3885:
3880:
3875:
3870:
3868:Benoni Defence
3863:Indian Defence
3860:
3855:
3850:
3845:
3839:
3837:
3831:
3830:
3828:
3827:
3826:
3825:
3820:
3815:
3806:
3796:
3791:
3790:
3789:
3779:
3777:Owen's Defence
3774:
3773:
3772:
3767:
3762:
3757:
3752:
3747:
3742:
3737:
3732:
3727:
3722:
3717:
3707:
3702:
3700:Modern Defence
3697:
3695:French Defence
3692:
3687:
3681:
3679:
3673:
3672:
3670:
3669:
3668:
3667:
3662:
3652:
3647:
3642:
3637:
3632:
3630:Bird's Opening
3627:
3621:
3619:
3610:
3604:
3603:
3601:
3600:
3595:
3590:
3585:
3584:
3583:
3578:
3573:
3568:
3561:Pawn structure
3558:
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3449:
3444:
3439:
3434:
3429:
3424:
3419:
3414:
3409:
3408:
3407:
3405:Alekhine's gun
3397:
3391:
3389:
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3374:
3369:
3364:
3359:
3358:
3357:
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3337:
3327:
3322:
3321:
3320:
3318:Half-open file
3310:
3305:
3300:
3295:
3290:
3289:
3288:
3283:
3278:
3273:
3268:
3261:Chess notation
3258:
3252:
3250:
3244:
3243:
3241:
3240:
3235:
3230:
3229:
3228:
3218:
3216:Pawn promotion
3213:
3206:
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3204:
3199:
3194:
3189:
3184:
3174:
3169:
3164:
3159:
3153:
3151:
3145:
3144:
3142:
3141:
3140:
3139:
3134:
3129:
3119:
3117:Women in chess
3114:
3113:
3112:
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3102:
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3087:
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3085:
3080:
3079:
3078:
3073:
3063:
3058:
3057:
3056:
3041:
3040:
3039:
3034:
3029:
3027:Hypermodernism
3024:
3022:Romantic chess
3019:
3017:Lewis chessmen
3014:
3009:
3002:
2989:
2987:
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2980:
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2891:
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2884:
2882:
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2863:
2862:
2857:
2855:world rankings
2847:
2846:
2845:
2844:
2843:
2833:
2823:
2818:
2813:
2808:
2807:
2806:
2801:
2796:
2791:
2784:Computer chess
2781:
2780:
2779:
2769:
2763:
2761:
2755:
2754:
2747:
2746:
2739:
2732:
2724:
2718:
2717:
2702:Valtonen, Kari
2695:
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2641:
2623:
2605:
2591:
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2428:
2426:Chess composer
2421:
2418:
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2250:
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2104:
2101:
2097:
2096:
2093:
2089:
2088:
2085:
2077:
2070:
2063:
2056:
2049:
2042:
2035:
2028:
2021:
2014:
2007:
2000:
1993:
1986:
1979:
1972:
1965:
1958:
1951:
1944:
1937:
1930:
1923:
1917:
1915:
1911:
1910:
1908:
1905:
1902:
1899:
1896:
1893:
1890:
1887:
1884:
1879:
1878:
1858:
1857:
1856:
1855:
1852:
1849:
1846:
1843:
1840:
1837:
1834:
1831:
1828:
1825:
1822:
1819:
1816:
1813:
1810:
1807:
1804:
1801:
1777:
1774:
1773:
1771:
1768:
1765:
1762:
1759:
1756:
1753:
1750:
1747:
1744:
1743:
1740:
1736:
1735:
1732:
1728:
1727:
1724:
1720:
1719:
1716:
1712:
1711:
1708:
1704:
1703:
1700:
1696:
1695:
1692:
1688:
1687:
1684:
1676:
1669:
1662:
1655:
1648:
1641:
1634:
1627:
1620:
1613:
1606:
1599:
1592:
1585:
1578:
1571:
1564:
1558:
1556:
1552:
1551:
1549:
1546:
1543:
1540:
1537:
1534:
1531:
1528:
1525:
1520:
1510:
1509:
1507:
1504:
1503:
1502:
1494:
1475:
1472:flight squares
1467:
1460:
1454:
1449:
1430:
1404:
1401:
1393:
1392:
1388:External links
1365:
1364:
1363:
1318:
1299:
1298:
1285:
1284:
1283:
1277:
1274:Seriesselfmate
1271:
1268:Serieshelpmate
1265:
1251:
1245:
1235:
1227:
1219:
1211:
1210:
1209:
1193:
1187:
1152:
1149:
1148:
1146:
1143:
1140:
1137:
1134:
1131:
1128:
1125:
1122:
1119:
1118:
1115:
1111:
1110:
1107:
1103:
1102:
1099:
1095:
1094:
1091:
1087:
1086:
1083:
1079:
1078:
1075:
1071:
1070:
1067:
1063:
1062:
1059:
1051:
1044:
1037:
1030:
1023:
1016:
1009:
1002:
995:
988:
981:
974:
967:
960:
953:
946:
940:
938:
934:
933:
931:
928:
925:
922:
919:
916:
913:
910:
907:
902:
895:
894:
883:
882:
879:
876:
873:
870:
869:1...Nf3 2.Qe4#
867:
866:1...Nf5 2.Re5#
864:
861:
858:
857:1...Nb5 2.Rc5#
855:
844:
841:
840:
839:
836:
835:
833:
830:
827:
824:
821:
818:
815:
812:
809:
806:
805:
802:
798:
797:
794:
790:
789:
786:
782:
781:
778:
774:
773:
770:
766:
765:
762:
758:
757:
754:
750:
749:
746:
738:
731:
724:
717:
710:
703:
696:
689:
682:
675:
668:
661:
654:
647:
640:
633:
626:
619:
612:
605:
598:
592:
590:
586:
585:
583:
580:
577:
574:
571:
568:
565:
562:
559:
554:
544:
543:
541:
538:
532:
529:
528:
527:
525:
520:
512:
505:
498:
486:
483:
469:
466:
457:
456:
441:over-the-board
404:
403:
401:
400:
393:
386:
378:
375:
374:
371:
370:
365:
360:
355:
350:
344:
339:
338:
335:
334:
330:
329:
324:
319:
314:
309:
304:
299:
294:
289:
283:
282:
275:
274:
271:
270:
265:
264:
258:
257:
256:
255:
247:
246:
240:
239:
238:
237:
232:
224:
223:
213:
212:
211:
210:
199:
194:
189:
181:
180:
179:
178:
173:
168:
163:
155:
150:
145:
140:
132:
131:
125:
124:
123:
122:
120:Self-reference
117:
112:
107:
99:
98:
92:
91:
90:
89:
84:
76:
75:
67:
62:
61:
58:
57:
49:
48:
42:
41:
35:
19:
18:
15:
9:
6:
4:
3:
2:
4533:
4522:
4519:
4517:
4514:
4513:
4511:
4496:
4493:
4491:
4486:
4481:
4480:
4477:
4471:
4470:Solving chess
4468:
4466:
4463:
4461:
4460:Chess prodigy
4458:
4454:
4451:
4449:
4446:
4445:
4444:
4443:Chess problem
4441:
4437:
4434:
4432:
4429:
4427:
4424:
4422:
4419:
4418:
4417:
4414:
4412:
4409:
4407:
4404:
4402:
4399:
4397:
4394:
4393:
4391:
4387:
4381:
4378:
4376:
4373:
4371:
4368:
4364:
4363:
4359:
4357:
4354:
4352:
4351:opening books
4349:
4348:
4347:
4344:
4340:
4339:short stories
4337:
4335:
4332:
4330:
4327:
4325:
4322:
4320:
4317:
4315:
4312:
4311:
4310:
4307:
4305:
4302:
4300:
4297:
4296:
4294:
4292:Art and media
4290:
4282:
4279:
4277:
4274:
4272:
4269:
4267:
4264:
4262:
4259:
4257:
4254:
4253:
4251:
4247:
4244:
4242:
4239:
4237:
4234:
4232:
4229:
4227:
4224:
4222:
4219:
4217:
4214:
4212:
4209:
4207:
4204:
4202:
4199:
4198:
4196:
4192:
4189:
4187:
4184:
4182:
4179:
4177:
4174:
4173:
4172:
4169:
4165:
4162:
4161:
4160:
4157:
4155:
4152:
4151:
4149:
4147:
4143:
4137:
4134:
4132:
4129:
4127:
4124:
4122:
4119:
4117:
4114:
4110:
4107:
4105:
4104:triangulation
4102:
4100:
4099:Tarrasch rule
4097:
4095:
4092:
4090:
4087:
4086:
4084:
4080:
4077:
4075:
4072:
4071:
4070:
4067:
4065:
4062:
4060:
4059:Queen vs pawn
4057:
4055:
4052:
4050:
4047:
4045:
4042:
4040:
4037:
4035:
4032:
4031:
4029:
4027:
4023:
4011:
4008:
4006:
4003:
4001:
3998:
3997:
3996:
3993:
3991:
3988:
3984:
3981:
3980:
3979:
3976:
3975:
3973:
3969:
3963:
3960:
3958:
3955:
3951:
3948:
3946:
3943:
3941:
3938:
3936:
3933:
3931:
3928:
3927:
3926:
3923:
3921:
3918:
3916:
3915:London System
3913:
3909:
3906:
3904:
3901:
3899:
3896:
3894:
3891:
3889:
3886:
3884:
3881:
3879:
3876:
3874:
3873:Modern Benoni
3871:
3869:
3866:
3865:
3864:
3861:
3859:
3856:
3854:
3853:Dutch Defence
3851:
3849:
3846:
3844:
3841:
3840:
3838:
3836:
3832:
3824:
3821:
3819:
3816:
3814:
3810:
3807:
3805:
3802:
3801:
3800:
3797:
3795:
3792:
3788:
3785:
3784:
3783:
3780:
3778:
3775:
3771:
3768:
3766:
3763:
3761:
3758:
3756:
3753:
3751:
3748:
3746:
3743:
3741:
3738:
3736:
3733:
3731:
3730:King's Gambit
3728:
3726:
3723:
3721:
3718:
3716:
3713:
3712:
3711:
3708:
3706:
3703:
3701:
3698:
3696:
3693:
3691:
3688:
3686:
3683:
3682:
3680:
3678:
3674:
3666:
3663:
3661:
3658:
3657:
3656:
3653:
3651:
3648:
3646:
3645:Grob's Attack
3643:
3641:
3638:
3636:
3635:Dunst Opening
3633:
3631:
3628:
3626:
3625:Benko Opening
3623:
3622:
3620:
3618:
3617:Flank opening
3614:
3611:
3609:
3605:
3599:
3596:
3594:
3591:
3589:
3586:
3582:
3579:
3577:
3574:
3572:
3569:
3567:
3564:
3563:
3562:
3559:
3557:
3554:
3550:
3547:
3546:
3545:
3542:
3538:
3535:
3534:
3533:
3530:
3528:
3525:
3524:
3522:
3520:
3516:
3510:
3507:
3505:
3502:
3500:
3497:
3495:
3492:
3490:
3487:
3483:
3480:
3479:
3478:
3475:
3473:
3470:
3468:
3465:
3463:
3460:
3458:
3455:
3453:
3450:
3448:
3445:
3443:
3440:
3438:
3435:
3433:
3430:
3428:
3425:
3423:
3420:
3418:
3415:
3413:
3410:
3406:
3403:
3402:
3401:
3398:
3396:
3393:
3392:
3390:
3388:
3384:
3378:
3375:
3373:
3372:Transposition
3370:
3368:
3365:
3363:
3360:
3356:
3353:
3351:
3348:
3346:
3343:
3341:
3338:
3336:
3333:
3332:
3331:
3328:
3326:
3323:
3319:
3316:
3315:
3314:
3311:
3309:
3306:
3304:
3301:
3299:
3296:
3294:
3291:
3287:
3284:
3282:
3279:
3277:
3274:
3272:
3269:
3267:
3264:
3263:
3262:
3259:
3257:
3254:
3253:
3251:
3249:
3245:
3239:
3236:
3234:
3231:
3227:
3224:
3223:
3222:
3219:
3217:
3214:
3212:
3211:
3207:
3203:
3200:
3198:
3195:
3193:
3190:
3188:
3185:
3183:
3180:
3179:
3178:
3175:
3173:
3170:
3168:
3165:
3163:
3160:
3158:
3155:
3154:
3152:
3150:
3146:
3138:
3135:
3133:
3130:
3128:
3125:
3124:
3123:
3122:Chess museums
3120:
3118:
3115:
3111:
3108:
3106:
3103:
3101:
3098:
3097:
3096:
3093:
3091:
3090:Notable games
3088:
3084:
3081:
3077:
3074:
3072:
3069:
3068:
3067:
3064:
3062:
3059:
3055:
3052:
3051:
3050:
3047:
3046:
3045:
3042:
3038:
3035:
3033:
3030:
3028:
3025:
3023:
3020:
3018:
3015:
3013:
3010:
3008:
3007:
3003:
3001:
3000:
2996:
2995:
2994:
2991:
2990:
2988:
2986:
2982:
2975:
2969:
2967:
2964:
2962:
2959:
2955:
2952:
2950:
2947:
2945:
2942:
2940:
2937:
2935:
2932:
2930:
2927:
2925:
2922:
2921:
2920:
2917:
2913:
2910:
2908:
2905:
2903:
2900:
2899:
2898:
2895:
2894:
2892:
2890:
2886:
2880:
2879:World records
2877:
2873:
2870:
2869:
2868:
2865:
2861:
2858:
2856:
2853:
2852:
2851:
2850:Rating system
2848:
2842:
2839:
2838:
2837:
2834:
2832:
2829:
2828:
2827:
2824:
2822:
2819:
2817:
2814:
2812:
2809:
2805:
2802:
2800:
2797:
2795:
2792:
2790:
2787:
2786:
2785:
2782:
2778:
2775:
2774:
2773:
2770:
2768:
2765:
2764:
2762:
2760:
2756:
2752:
2745:
2740:
2738:
2733:
2731:
2726:
2725:
2722:
2715:
2711:
2707:
2703:
2699:
2696:
2693:
2692:1-879479-33-8
2689:
2685:
2681:
2678:
2675:
2674:1-901983-66-8
2671:
2667:
2663:
2660:
2657:
2656:0-571-15363-1
2653:
2649:
2645:
2644:Morse, Jeremy
2642:
2639:
2635:
2631:
2627:
2624:
2621:
2620:0-486-20748-X
2617:
2613:
2609:
2606:
2603:
2599:
2595:
2592:
2589:
2588:
2583:
2580:
2577:
2573:
2572:1-85223-240-4
2569:
2565:
2561:
2558:
2557:
2546:
2542:
2539:
2535:
2531:
2525:
2517:
2511:
2507:
2500:
2493:
2487:
2483:
2479:
2472:
2464:
2460:
2454:
2452:
2447:
2437:
2434:
2432:
2429:
2427:
2424:
2423:
2417:
2415:
2410:
2406:
2404:
2400:
2396:
2392:
2391:Lev Loshinsky
2388:
2384:
2383:Marian Wróbel
2380:
2379:Cyril Kipping
2376:
2372:
2368:
2364:
2359:
2357:
2353:
2349:
2345:
2335:
2331:
2329:
2323:
2314:
2312:
2307:
2304:
2300:
2294:
2292:
2288:
2282:
2278:
2270:
2268:
2258:
2255:
2249:
2245:
2243:
2239:
2237:
2233:
2231:
2227:
2224:
2220:
2216:
2212:
2210:
2206:
2205:
2204:
2198:Abbreviations
2195:
2193:
2189:
2173:
2170:
2167:
2164:
2161:
2158:
2155:
2152:
2149:
2147:
2146:
2142:
2139:
2138:
2134:
2131:
2130:
2126:
2123:
2122:
2118:
2115:
2114:
2110:
2107:
2106:
2102:
2099:
2098:
2094:
2091:
2090:
2086:
1913:
1912:
1909:
1906:
1903:
1900:
1897:
1894:
1891:
1888:
1885:
1883:
1882:
1877:
1875:
1871:
1867:
1862:
1853:
1850:
1847:
1844:
1841:
1838:
1835:
1832:
1829:
1826:
1823:
1820:
1817:
1814:
1811:
1808:
1805:
1802:
1799:
1798:
1797:
1793:
1792:
1791:
1789:
1784:
1772:
1769:
1766:
1763:
1760:
1757:
1754:
1751:
1748:
1746:
1745:
1741:
1738:
1737:
1733:
1730:
1729:
1725:
1722:
1721:
1717:
1714:
1713:
1709:
1706:
1705:
1701:
1698:
1697:
1693:
1690:
1689:
1685:
1554:
1553:
1550:
1547:
1544:
1541:
1538:
1535:
1532:
1529:
1526:
1524:
1523:
1515:
1500:
1495:
1492:
1487:
1480:
1476:
1473:
1468:
1465:
1461:
1458:
1452:
1450:
1447:
1443:
1439:
1435:
1431:
1427:
1426:
1425:
1422:
1418:
1409:
1400:
1398:
1389:
1385:
1381:
1377:
1373:
1369:
1366:
1361:
1360:
1356:
1355:
1353:
1349:
1345:
1344:
1340:
1339:
1338:
1335:
1333:
1329:
1328:knight's tour
1325:
1320:
1316:
1314:
1313:
1308:
1304:
1295:
1291:
1290:
1286:
1281:
1278:
1275:
1272:
1269:
1266:
1263:
1260:
1259:
1257:
1256:
1252:
1249:
1243:
1241:
1240:
1236:
1233:
1232:
1231:Helpselfmates
1228:
1225:
1224:
1220:
1217:
1216:
1212:
1199:
1198:
1194:
1191:
1188:
1185:
1182:
1181:
1171:
1168:
1167:
1166:
1159:
1147:
1144:
1141:
1138:
1135:
1132:
1129:
1126:
1123:
1121:
1120:
1116:
1113:
1112:
1108:
1105:
1104:
1100:
1097:
1096:
1092:
1089:
1088:
1084:
1081:
1080:
1076:
1073:
1072:
1068:
1065:
1064:
1060:
936:
935:
932:
929:
926:
923:
920:
917:
914:
911:
908:
906:
905:
887:
880:
877:
875:1...Nc2 2.b4#
874:
871:
868:
865:
862:
859:
856:
853:
852:
851:
849:
834:
831:
828:
825:
822:
819:
816:
813:
810:
808:
807:
803:
800:
799:
795:
792:
791:
787:
784:
783:
779:
776:
775:
771:
768:
767:
763:
760:
759:
755:
752:
751:
747:
588:
587:
584:
581:
578:
575:
572:
569:
566:
563:
560:
558:
557:
549:
537:
523:
521:
517:
513:
510:
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474:chess problem
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368:Puzzle topics
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31:
27:
23:
4442:
4416:Chess engine
4401:Chess boxing
4361:
4131:Wrong bishop
3983:theory table
3957:Torre Attack
3940:Slav Defence
3848:Colle System
3823:Scheveningen
3782:Pirc Defence
3725:Italian Game
3720:Giuoco Piano
3665:Réti Opening
3588:Piece values
3576:Maróczy Bind
3537:the exchange
3527:Compensation
3457:Interference
3447:Double check
3221:Time control
3208:
3182:by agreement
3110:grandmasters
3054:South Africa
3004:
2997:
2973:Score sheets
2919:Chess pieces
2826:Online chess
2772:Chess titles
2767:Chess theory
2705:
2683:
2665:
2647:
2637:
2611:
2601:
2585:
2563:
2524:
2505:
2499:
2486:kotesovec.cz
2485:
2478:Thompson, K.
2471:
2462:
2411:
2407:
2363:André Chéron
2360:
2341:
2332:
2324:
2320:
2310:
2308:
2299:patrol chess
2295:
2276:
2266:
2264:
2256:
2252:
2247:
2241:
2235:
2229:
2222:
2218:
2214:
2208:
2201:
2191:
2183:
1869:
1863:
1859:
1785:
1782:
1513:
1498:
1490:
1471:
1466:for a list).
1456:
1445:
1441:
1437:
1433:
1415:The role of
1414:
1394:
1383:
1375:
1367:
1357:
1351:
1347:
1341:
1336:
1332:eight queens
1321:
1310:
1300:
1287:
1279:
1273:
1267:
1261:
1255:Seriesmovers
1253:
1247:
1237:
1229:
1221:
1213:
1195:
1190:Three-movers
1189:
1183:
1169:
1164:
886:knight wheel
885:
845:
547:
534:
515:
508:
501:
494:
488:
473:
471:
446:
424:chess pieces
415:
411:
409:
287:Brain teaser
196:
158:
143:Construction
25:
4346:Chess books
4146:Tournaments
4005:Fool's mate
3770:Vienna Game
3760:Scotch Game
3593:Prophylaxis
3509:Zwischenzug
3494:Undermining
3462:Overloading
3422:Combination
3271:descriptive
2966:Chess table
2961:Chess clock
2777:Grandmaster
2598:Wilts, Gerd
2578:' problems.
2566:, Crowood.
2403:FIDE Albums
2375:Jan Hartong
2352:FIDE Master
2344:Grandmaster
2311:anticipated
2261:Tournaments
1866:Organ Pipes
1397:fairy chess
1239:Reflexmates
1170:Directmates
507:There is a
502:stipulation
447:unrealistic
262:Metapuzzles
138:Combination
4510:Categories
4453:joke chess
4406:Chess club
4094:opposition
3556:Middlegame
3544:Initiative
3467:Pawn storm
3432:Deflection
3303:Key square
3293:Fianchetto
3226:Fast chess
3210:En passant
2902:chessboard
2680:Rice, John
2662:Nunn, John
2634:Rice, John
2490:– longest
2442:References
2412:The title
2242:reflexmate
1352:en passant
1312:En passant
1262:Seriesmate
1197:Moremovers
1184:Two-movers
519:solution).
468:Definition
322:Puzzlehunt
207:Logic maze
129:Mechanical
115:Logic grid
105:Dissection
4436:Stockfish
4426:Deep Blue
4421:AlphaZero
4329:paintings
4121:Tablebase
4085:Strategy
3995:Irregular
3750:Ruy Lopez
3710:Open Game
3477:Sacrifice
3437:Desperado
3340:connected
3313:Open file
3308:King walk
3266:algebraic
3197:Stalemate
3172:Checkmate
2897:Chess set
2889:Equipment
2492:moremover
2215:stalemate
2209:checkmate
1491:obtrusive
1429:blunders.
1376:Le Sphinx
1223:Selfmates
1215:Helpmates
1176:", where
472:The term
435:checkmate
327:Syllogism
230:Crossword
110:Induction
87:Situation
4495:Category
4448:glossary
4109:Zugzwang
4089:fortress
4026:Endgames
3935:Declined
3930:Accepted
3608:Openings
3566:Hedgehog
3532:Exchange
3519:Strategy
3499:Windmill
3350:isolated
3335:backward
3157:Castling
3100:amateurs
2993:Timeline
2867:Variants
2821:Glossary
2804:software
2789:glossary
2704:(2012),
2682:(1996),
2664:(1985),
2640:, Faber.
2636:(1963),
2610:(1961),
2600:(1991),
2562:(1989),
2541:Archived
2420:See also
2293:(PCCC).
2283:informal
2267:tourneys
2236:selfmate
2230:helpmate
1874:Grimshaw
1788:zugzwang
1479:promoted
1434:key move
1372:Sam Loyd
1303:castling
495:composed
485:Features
478:tactical
161:problems
73:Guessing
4396:Arbiter
4389:Related
4246:Solving
4236:Amateur
3818:Najdorf
3400:Battery
3387:Tactics
3362:Swindle
3345:doubled
3325:Outpost
3256:Blunder
3071:Armenia
2985:History
2831:Premove
2799:engines
2794:matches
2759:Outline
1446:unsound
1294:endgame
1289:Studies
516:economy
418:, is a
312:Paradox
292:Dilemma
205: (
192:Sliding
166:Folding
46:Puzzles
4334:poetry
4324:novels
4299:Caïssa
4231:Senior
4221:Junior
3809:Dragon
3804:Alapin
3489:Skewer
3355:passed
3298:Gambit
3105:female
3066:Europe
3049:Africa
2944:Knight
2939:Bishop
2712:
2690:
2672:
2654:
2618:
2570:
2512:
2397:, and
2338:Titles
2279:formal
2248:series
1442:cooked
1348:retros
420:puzzle
278:Topics
235:Sudoku
221:Number
176:Tiling
82:Riddle
4281:WCSCC
4226:Youth
4216:Blitz
4211:Rapid
4201:Women
4164:Women
4116:Study
3971:Other
3504:X-ray
3427:Decoy
3412:Block
3367:Tempo
3330:Pawns
3248:Terms
3167:Check
3149:Rules
3083:India
3076:Spain
3061:China
2954:Fairy
2929:Queen
2860:norms
2751:Chess
2303:Lacny
1794:1 Rh1
509:theme
431:board
428:chess
426:on a
341:Lists
253:Mazes
197:Chess
171:Stick
96:Logic
64:Types
28:, by
4319:film
4276:WCCC
4271:TCEC
4261:CSVN
4206:Team
4176:List
3452:Fork
3377:Trap
3177:Draw
2949:Pawn
2934:Rook
2924:King
2872:List
2841:list
2816:FIDE
2710:ISBN
2700:and
2688:ISBN
2670:ISBN
2652:ISBN
2632:and
2616:ISBN
2596:and
2568:ISBN
2510:ISBN
2381:and
2350:and
2192:down
1457:dual
1453:each
1244:must
297:Joke
219:and
217:Word
203:Maze
187:Tour
153:Lock
4256:CCC
3472:Pin
3276:PGN
2530:doi
2281:or
2223:pat
2188:NRK
1438:key
1436:or
1386:in
1317:not
4512::
2628:,
2584:,
2484:.
2461:.
2450:^
2393:,
2389:,
2377:,
2373:,
2369:,
2365:,
2346:,
1516:,
888:.)
550:,
453:.
410:A
159:Go
3811:/
2743:e
2736:t
2729:v
2532::
2518:.
2488:.
2465:.
2219:p
2171:h
2168:g
2165:f
2162:e
2159:d
2156:c
2153:b
2150:a
2143:1
2140:1
2135:2
2132:2
2127:3
2124:3
2119:4
2116:4
2111:5
2108:5
2103:6
2100:6
2095:7
2092:7
2087:8
1914:8
1907:h
1904:g
1901:f
1898:e
1895:d
1892:c
1889:b
1886:a
1796:!
1770:h
1767:g
1764:f
1761:e
1758:d
1755:c
1752:b
1749:a
1742:1
1739:1
1734:2
1731:2
1726:3
1723:3
1718:4
1715:4
1710:5
1707:5
1702:6
1699:6
1694:7
1691:7
1686:8
1555:8
1548:h
1545:g
1542:f
1539:e
1536:d
1533:c
1530:b
1527:a
1470:(
1250:.
1206:n
1202:n
1178:n
1174:n
1145:h
1142:g
1139:f
1136:e
1133:d
1130:c
1127:b
1124:a
1117:1
1114:1
1109:2
1106:2
1101:3
1098:3
1093:4
1090:4
1085:5
1082:5
1077:6
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1069:7
1066:7
1061:8
937:8
930:h
927:g
924:f
921:e
918:d
915:c
912:b
909:a
848:!
832:h
829:g
826:f
823:e
820:d
817:c
814:b
811:a
804:1
801:1
796:2
793:2
788:3
785:3
780:4
777:4
772:5
769:5
764:6
761:6
756:7
753:7
748:8
589:8
582:h
579:g
576:f
573:e
570:d
567:c
564:b
561:a
397:e
390:t
383:v
209:)
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