1361:, 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
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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.
1801:, 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:
2416:. 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.
2296:. 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
2201:'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
1485:), 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.
1500:. 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
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1373:: 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.
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2324:(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.
4496:
508:– 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.
1879:. 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
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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
1434:
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
1307:
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
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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
1401:
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
2419:
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
1871:
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
546:
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
2264:
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).
1512:), 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.
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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
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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.
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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
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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
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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
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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.
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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
2213:
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:
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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
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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.)
2196:
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
537:. 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.
2369:(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).
1883:. 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
1348:
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:
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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
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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.
2705:. 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.
1473:
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
3047:
1269:: 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:
2317:
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).
2412:) 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
2539:
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,
1191:
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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547:
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.
2424:
3833:
1470:. 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.
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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
444:, 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
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1430:
in the appreciation of chess problems is very significant, and indeed most composers and solvers consider such compositions to be an art form.
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2524:
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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
3823:
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1183:: White to move first and checkmate Black within a specified number of moves against any defence. These are often referred to as "mate in
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1875:
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
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3142:
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minimum number of squares. A special class are games uniquely determined by their last move like "3...Rxe5+" or "4...b5#" from above.
1381:: no diagram is given in construction tasks; instead, the aim is to construct a game or position with certain features. For example,
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After an award is published, there is a period (typically around three months) in which individuals may claim honoured problems are
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522:(or combination of themes) that the problem has been composed to illustrate: chess problems typically instantiate particular ideas.
1333:
There are several other types of chess problem which do not fall into any of the above categories. Some of these are really coded
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interferences, and are the theme of this problem. The problem exhibits four such interferences, on squares e6, e7, f6, and f7.
1872:
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#.
1419:
1293:: a reflexmate in which White plays a series of moves leading to a position in which Black can, and therefore must, give mate.
4236:
4226:
4221:
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2851:
2268:
In studies, the symbols "+" and "=" are used to indicate "White to play and win" and "White to play and draw" respectively.
2633:. A preliminary section of 30 pages is a useful introduction for novice solvers; there follow 112 problems with discussion.
32:
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devised the problem: "Construct a game which ends with black delivering discovered checkmate on move four" (published in
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1341:, in which one is to determine the path of a knight that visits each square of the board exactly once. Another is the
4385:
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4044:
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1281:: 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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1393:), the Black ones are not. A unique problem is: "Construct a game with black b-pawn checkmating on move four" (from
1330:
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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1504:. The presence of obtrusive units constitutes a smaller flaw than the presence of more obviously promoted units.
1287:: 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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is not sharply defined: there is no clear demarcation between chess compositions on the one hand and puzzle or
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1303:: an orthodox problem in which the stipulation is that White to play must win or draw. Almost all studies are
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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.
158:
3700:
1797:
The key move is 1.Rh1. This is difficult to find because it makes no threat – instead, it puts Black in
1229:: Black to move first cooperates with White to get Black's own king mated in a specified number of moves.
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1389:, 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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515:, 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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895:(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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1337:, expressed using the geometry and pieces of the chessboard. A famous such problem is the
327:
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1237:: 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:
1257:
give mate if it is able to do so. When this stipulation applies only to Black, it is a
202:
64:
1245:: White to move first cooperates with Black to get a position of selfmate in one move.
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4126:
4109:
4036:
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3422:
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2712:
1304:
1299:
1275:: a directmate with White playing a series of moves without reply to checkmate Black.
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186:
83:
1203:: White to move and checkmate Black in no more than three moves against any defence.
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2615:. A collection of 170 proof games (published in Germany, but written in English).
2517:
Chess
Mysteries of Sherlock Holmes: Fifty tantalizing problems of chess detection
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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.
1320:(see below) that the rook in question or king must have previously moved.
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2717:
The definitive book - Encyclopedia of Chess
Problems: Themes and Terms
1406:
Across most of the above genres, there is great interest in exploring
3308:
1197:: White to move and checkmate Black in two moves against any defence.
245:
92:
56:
2727:. An extensive overview A–Z of themes and terms with 1726 problems.
1462:
Ideally, in directmates, there should be a unique White move after
27:
Chess composition whose solution is a mate or other clear objective
2761:
2313:
1417:
438:
2469:
4495:
2826:
2280:) exist for both the composition and solving of chess problems.
213:
2734:
2300:(WCCT) is a formal tourney for national teams organised by the
1253:: a form of selfmate with the added stipulation that each side
2198:
1466:
Black move. A choice of White moves (other than the key) is a
1451:) must be unique. A problem which has two keys is said to be
2549:
http://comjnl.oxfordjournals.org/content/51/4/408.abstract
1862:
1...Rxe2+, 2.Nxe2# (allows capture on unguarded square e2)
462:
specialized jargon used in connection with chess problems
2730:
1856:
1...Re4, 2.fxe4# (allows pawn capture discovering check)
2367:
Permanent
Commission of the FIDE for Chess Compositions
2302:
Permanent
Commission of the FIDE for Chess Compositions
1410:, in which non-standard boards, pieces or rules apply.
1850:
1...Re6, 2.Nd5# (interferes with bishop’s guard of d5)
1847:
1...Re7, 2.Rh4# (interferes with bishop’s guard of h4)
1841:
1...Rf6, 2.Rh4# (interferes with bishop’s guard of h4)
1838:
1...Rf7, 2.Nd5# (interferes with bishop’s guard of d5)
1164:
Mate in 267 moves; the longest moremover without
2687:. Problems seen from the point of view of the solver.
1176:
There are various different types of chess problems:
1829:
1...Bf6, 2.Qf5# (interferes with rook’s guard of f5)
1814:
1...Bf7, 2.Qf5# (interferes with rook’s guard of f5)
1316:
is assumed to be allowed unless it can be proved by
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2470:"OzProblems - Australian chess problem composition"
1826:
1...Be7, 2.e3# (interferes with rook’s guard of e3)
1817:
1...Be6, 2.e3# (interferes with rook’s guard of e3)
1891:
1532:
914:
566:
2547:. Online ISSN 1460-2067, Print ISSN 0010-4620.
2205:the board and cannot capture the White knight.
2697:, Batsford / International Chess Enterprises.
1443:The first move of the problem's solution (the
2746:
2695:Chess Wizardry: The New ABC of Chess Problems
2236:", the French for stalemate, is used instead)
1422:Black mating on move 5 by promoting to knight
1390:
1219:is some particular number greater than three.
400:
8:
2669:. Concentrates on maximum tasks and records.
1859:1...Re3, 2.Bh2# (blocks king’s flight to e3)
1853:1...Re5, 2.Qg4# (blocks king’s flight to e5)
1832:1...Bg5, 2.Qh2# (blocks king’s flight to g5)
2585:. An encyclopedia of unorthodox and 'chess
2353:Just as in over-the-board play, the titles
3623:
2753:
2739:
2731:
407:
393:
79:
47:
2425:International Judge of Chess Compositions
1326:captures, on the other hand, are assumed
2493:"267 moves – Lutz Neweklowsky 2001"
2491:; Karrer, P.; Formánek, Bedrich (eds.).
31:
2458:
2083:
2076:
2055:
2048:
1964:
1950:
1943:
1689:
1675:
1612:
1605:
1598:
1577:
1211:: White to move and checkmate Black in
1050:
1022:
1015:
1008:
994:
966:
959:
744:
737:
716:
709:
688:
681:
625:
271:
253:
226:
138:
105:
82:
55:
2649:Chess Problems: Introduction to an Art
2601:. Chess and Chess Problems in fiction.
2062:
1957:
1626:
1001:
973:
751:
646:
2519:. Puzzles & Games. Random House.
2090:
2069:
2041:
2034:
2027:
2020:
2013:
2006:
1999:
1992:
1985:
1978:
1971:
1936:
1927:
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730:
723:
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674:
667:
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632:
618:
611:
602:
7:
2575:Book of Extraordinary Chess Problems
2464:
2462:
2447:Software for handling chess problems
1398:
1357:: such problems, often also called
1312:In all the above types of problem,
25:
2659:Chess Problems: Tasks and Records
1215:moves against any defence, where
4494:
4165:List of strong chess tournaments
2339:World Chess Solving Championship
2298:World Chess Composing Tournament
2089:
2082:
2075:
2068:
2061:
2054:
2047:
2040:
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2019:
2012:
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638:
631:
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617:
610:
604:
63:
3143:Gökyay Association Chess Museum
2657:(1995; revised edition, 2001),
1395:Shortest construction tasks map
1844:1...Rf5, 2.Qxf5# (unguards f5)
1835:1...Bh4, 2.Rxh4# (unguards h4)
1823:1...Bxc7, 2.Rh4# (unguards h4)
1820:1...Bd5, 2.Nxd5# (unguards d5)
1811:1...Bxh7, 2.Nd5# (unguards d5)
559:Hampstead and Highgate Express
1:
4263:Computer chess championships
2365:are awarded by FIDE via the
2288:Composition tourneys may be
1865:1...c3, 2.Nd3# (unguards d3)
1354:Retrograde analysis problems
4045:Bishop and knight checkmate
2623:How To Solve Chess Problems
2487:Neweklowsky, Lutz (2001) .
4548:
4208:Other world championships
466:
433:set by the composer using
4489:
4055:Opposite-coloured bishops
2598:The Emperor of Ocean Park
2341:, organised by the PCCC.
2190:White mates in one move!
1475:chess problem terminology
4182:World Chess Championship
3148:World Chess Hall of Fame
2276:Various tournaments (or
1414:Beauty in chess problems
1391:Beauty in chess problems
473:to describe chess moves.
41:Adolphe Alexandre Lesrel
4476:Simultaneous exhibition
4386:Chess newspaper columns
4075:Rook and bishop vs rook
4065:Queen and pawn vs queen
2679:, Gambit Publications.
2505:without obtrusive units
2312:, problems showing the
2284:Composition tournaments
907:Lutz Neweklowsky, 2001
3931:Richter–Veresov Attack
3919:Queen's Indian Defence
2625:, Dover Publications.
1423:
563:1905–1906 (1st Prize)
43:
37:An Interesting Problem
4192:Candidates Tournament
4080:Rook and pawn vs rook
4050:King and pawn vs king
4001:List of chess gambits
3904:King's Indian Defence
3582:Isolated Queen's Pawn
3106:List of chess players
3048:Top player comparison
2847:Internet chess server
2545:10.1093/comjnl/bxm060
2515:Smullyan, R. (1994).
1525:Dubuque Chess Journal
1421:
1335:mathematical problems
861:(threatening 2.Nc3)
525:The problem exhibits
35:
3909:Nimzo-Indian Defence
3805:Scandinavian Defense
3766:Semi-Italian Opening
3671:King's Indian Attack
3560:first-move advantage
3213:Threefold repetition
3138:Bobby Fischer Center
3023:Charlemagne chessmen
3017:Göttingen manuscript
2822:Correspondence chess
2613:Shortest Proof Games
2382:Alexander Gerbstmann
2359:International Master
1496:light-square bishops
1455:and is judged to be
1428:aesthetic evaluation
1370:Shortest proof games
511:There is a specific
4137:Two knights endgame
3889:Bogo-Indian Defence
3776:Two Knights Defense
3716:Nimzowitsch Defence
3406:Artificial castling
3043:Soviet chess school
2918:Dubrovnik chess set
2719:, Chess Informant.
2661:, Faber and Faber.
2328:Solving tournaments
2257:"ser-" abbreviates
1789:White mates in two
1488:There should be no
1318:retrograde analysis
911:& Karrer 2000)
369:Nikoli puzzle types
51:Part of a series on
4367:endgame literature
3914:Old Indian Defense
3824:Accelerated Dragon
3696:Alekhine's Defence
3428:Checkmate patterns
3297:symbols in Unicode
3292:annotation symbols
3055:Geography of chess
2923:Staunton chess set
2709:Velimirovic, Milan
2641:Matthews, R. C. O.
2619:Howard, Kenneth S.
2554:2016-06-08 at the
2474:www.ozproblems.com
1510:dressing the board
1424:
1379:Construction tasks
853:White mates in two
471:algebraic notation
469:This article uses
374:Puzzle video games
359:Impossible puzzles
255:Puzzle video games
44:
4514:
4513:
4391:Chess periodicals
4320:Chess in the arts
4252:Chess composition
4090:Philidor position
4031:
4030:
3973:Trompowsky Attack
3956:Semi-Slav Defence
3846:Queen's Pawn Game
3726:Four Knights Game
3701:Caro–Kann Defence
3666:Zukertort Opening
3453:Discovered attack
3173:Cheating in chess
3010:Versus de scachis
2725:978-86-7297-064-7
2593:Stephen L. Carter
2526:978-0-8129-2389-6
2398:Genrikh Kasparyan
2232:", standing for "
2188:
2187:
1881:self-interference
1787:
1786:
1529:1889 (1st Prize)
1162:
1161:
849:
848:
556:Godfrey Heathcote
551:Types of problems
427:chess composition
417:
416:
278:
277:
16:(Redirected from
4539:
4501:Chess portal
4499:
4498:
4442:Leela Chess Zero
4373:Oxford Companion
4325:early literature
4315:Chess aesthetics
4060:Pawnless endgame
4011:Bongcloud Attack
3989:List of openings
3961:Chigorin Defense
3899:Grünfeld Defence
3810:Sicilian Defence
3756:Ponziani Opening
3751:Philidor Defence
3746:Petrov's Defence
3688:King's Pawn Game
3661:Larsen's Opening
3624:
2985:
2755:
2748:
2741:
2732:
2677:Solving in Style
2587:lateral thinking
2571:Addison, Stephen
2558:
2537:
2531:
2530:
2512:
2506:
2500:
2484:
2478:
2477:
2466:
2442:Chess aesthetics
2410:Eeltje Visserman
2406:Comins Mansfield
2378:Arnoldo Ellerman
2251:"r" abbreviates
2245:"s" abbreviates
2239:"h" abbreviates
2224:"=" abbreviates
2218:"#" abbreviates
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1522:Thomas Taverner
1497:
1432:Vladimir Nabokov
1291:Seriesreflexmate
1218:
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909:(after Thompson
857:Solution: 1.Rcc7
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542:Tactical puzzles
533:The problem has
504:The position is
453:
425:, also called a
409:
402:
395:
364:Maze video games
353:
318:Packing problems
313:Optical illusion
291:
80:
76:
67:
48:
21:
4547:
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4515:
4510:
4493:
4485:
4395:
4381:Chess libraries
4298:
4202:FIDE Grand Prix
4197:Chess World Cup
4151:
4147:Wrong rook pawn
4085:Lucena position
4027:
3977:
3894:Catalan Opening
3869:English Defence
3854:Budapest Gambit
3840:
3798:Austrian Attack
3682:
3651:English Opening
3613:
3609:School of chess
3592:Minority attack
3524:
3493:Queen sacrifice
3392:
3253:
3249:White and Black
3244:Touch-move rule
3203:Perpetual check
3198:Fifty-move rule
3154:
2990:
2987:
2894:
2764:
2759:
2637:Lipton, Michael
2605:Frolkin, Andrei
2567:
2565:Further reading
2562:
2561:
2556:Wayback Machine
2538:
2534:
2527:
2514:
2513:
2509:
2486:
2485:
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2228:(occasionally "
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1530:
1528:
1523:
1519:
1517:Example problem
1499:
1416:
1259:semi-reflexmate
1216:
1212:
1188:
1184:
1174:
1173:
1172:
1171:
1168:obtrusive units
1069:
1068:
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1005:
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991:
984:
977:
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953:
912:
910:
908:
904:
903:
902:
901:
900:
892:1...Rc5 2.Rxc5#
889:1...Rxa4 2.Rc5#
883:1...Ne2 2.Qxh5#
874:1...Ne6 2.Red7#
871:1...Nc6 2.Rcd7#
865:1...Nxb3 2.Qd3#
854:
756:
755:
748:
741:
734:
727:
720:
713:
706:
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664:
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650:
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636:
629:
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557:
553:
544:
535:aesthetic value
498:
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418:
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328:Problem solving
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159:Disentanglement
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28:
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22:
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11:
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4532:Chess problems
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4527:Chess endgames
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4509:
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4483:
4478:
4473:
4468:
4467:
4466:
4461:
4451:
4450:
4449:
4444:
4439:
4434:
4424:
4422:Chess composer
4419:
4414:
4409:
4403:
4401:
4397:
4396:
4394:
4393:
4388:
4383:
4378:
4377:
4376:
4369:
4364:
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4337:
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4327:
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4312:
4306:
4304:
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4295:
4294:
4289:
4284:
4279:
4277:North American
4274:
4269:
4261:
4260:
4259:
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4249:
4244:
4239:
4234:
4229:
4224:
4219:
4214:
4206:
4205:
4204:
4199:
4194:
4189:
4179:
4178:
4177:
4170:Chess Olympiad
4167:
4161:
4159:
4153:
4152:
4150:
4149:
4144:
4139:
4134:
4129:
4124:
4123:
4122:
4117:
4112:
4107:
4102:
4094:
4093:
4092:
4087:
4077:
4072:
4067:
4062:
4057:
4052:
4047:
4041:
4039:
4033:
4032:
4029:
4028:
4026:
4025:
4024:
4023:
4021:Scholar's mate
4018:
4013:
4003:
3998:
3997:
3996:
3985:
3983:
3979:
3978:
3976:
3975:
3970:
3965:
3964:
3963:
3958:
3953:
3948:
3943:
3936:Queen's Gambit
3933:
3928:
3923:
3922:
3921:
3916:
3911:
3906:
3901:
3896:
3891:
3886:
3881:
3879:Benoni Defence
3874:Indian Defence
3871:
3866:
3861:
3856:
3850:
3848:
3842:
3841:
3839:
3838:
3837:
3836:
3831:
3826:
3817:
3807:
3802:
3801:
3800:
3790:
3788:Owen's Defence
3785:
3784:
3783:
3778:
3773:
3768:
3763:
3758:
3753:
3748:
3743:
3738:
3733:
3728:
3718:
3713:
3711:Modern Defence
3708:
3706:French Defence
3703:
3698:
3692:
3690:
3684:
3683:
3681:
3680:
3679:
3678:
3673:
3663:
3658:
3653:
3648:
3643:
3641:Bird's Opening
3638:
3632:
3630:
3621:
3615:
3614:
3612:
3611:
3606:
3601:
3596:
3595:
3594:
3589:
3584:
3579:
3572:Pawn structure
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3460:
3455:
3450:
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3430:
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3419:
3418:
3416:Alekhine's gun
3408:
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3400:
3394:
3393:
3391:
3390:
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3375:
3370:
3369:
3368:
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3333:
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3331:
3329:Half-open file
3321:
3316:
3311:
3306:
3301:
3300:
3299:
3294:
3289:
3284:
3279:
3272:Chess notation
3269:
3263:
3261:
3255:
3254:
3252:
3251:
3246:
3241:
3240:
3239:
3229:
3227:Pawn promotion
3224:
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3205:
3200:
3195:
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3180:
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3170:
3164:
3162:
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3130:
3128:Women in chess
3125:
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3089:
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3069:
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3050:
3045:
3040:
3038:Hypermodernism
3035:
3033:Romantic chess
3030:
3028:Lewis chessmen
3025:
3020:
3013:
3000:
2998:
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2991:
2989:
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2866:world rankings
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2857:
2856:
2855:
2854:
2844:
2834:
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2817:
2812:
2807:
2802:
2795:Computer chess
2792:
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2790:
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2774:
2772:
2766:
2765:
2760:
2758:
2757:
2750:
2743:
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2713:Valtonen, Kari
2706:
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2437:Chess composer
2432:
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2255:
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2112:
2108:
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2100:
2099:
2096:
2088:
2081:
2074:
2067:
2060:
2053:
2046:
2039:
2032:
2025:
2018:
2011:
2004:
1997:
1990:
1983:
1976:
1969:
1962:
1955:
1948:
1941:
1934:
1928:
1926:
1922:
1921:
1919:
1916:
1913:
1910:
1907:
1904:
1901:
1898:
1895:
1890:
1889:
1869:
1868:
1867:
1866:
1863:
1860:
1857:
1854:
1851:
1848:
1845:
1842:
1839:
1836:
1833:
1830:
1827:
1824:
1821:
1818:
1815:
1812:
1788:
1785:
1784:
1782:
1779:
1776:
1773:
1770:
1767:
1764:
1761:
1758:
1755:
1754:
1751:
1747:
1746:
1743:
1739:
1738:
1735:
1731:
1730:
1727:
1723:
1722:
1719:
1715:
1714:
1711:
1707:
1706:
1703:
1699:
1698:
1695:
1687:
1680:
1673:
1666:
1659:
1652:
1645:
1638:
1631:
1624:
1617:
1610:
1603:
1596:
1589:
1582:
1575:
1569:
1567:
1563:
1562:
1560:
1557:
1554:
1551:
1548:
1545:
1542:
1539:
1536:
1531:
1521:
1520:
1518:
1515:
1514:
1513:
1505:
1493:
1486:
1483:flight squares
1478:
1471:
1465:
1460:
1441:
1415:
1412:
1404:
1403:
1399:External links
1376:
1375:
1374:
1329:
1310:
1309:
1296:
1295:
1294:
1288:
1285:Seriesselfmate
1282:
1279:Serieshelpmate
1276:
1262:
1256:
1246:
1238:
1230:
1222:
1221:
1220:
1204:
1198:
1165:
1163:
1160:
1159:
1157:
1154:
1151:
1148:
1145:
1142:
1139:
1136:
1133:
1130:
1129:
1126:
1122:
1121:
1118:
1114:
1113:
1110:
1106:
1105:
1102:
1098:
1097:
1094:
1090:
1089:
1086:
1082:
1081:
1078:
1074:
1073:
1070:
1062:
1055:
1048:
1041:
1034:
1027:
1020:
1013:
1006:
999:
992:
985:
978:
971:
964:
957:
951:
949:
945:
944:
942:
939:
936:
933:
930:
927:
924:
921:
918:
913:
906:
905:
894:
893:
890:
887:
884:
881:
880:1...Nf3 2.Qe4#
878:
877:1...Nf5 2.Re5#
875:
872:
869:
868:1...Nb5 2.Rc5#
866:
855:
852:
851:
850:
847:
846:
844:
841:
838:
835:
832:
829:
826:
823:
820:
817:
816:
813:
809:
808:
805:
801:
800:
797:
793:
792:
789:
785:
784:
781:
777:
776:
773:
769:
768:
765:
761:
760:
757:
749:
742:
735:
728:
721:
714:
707:
700:
693:
686:
679:
672:
665:
658:
651:
644:
637:
630:
623:
616:
609:
603:
601:
597:
596:
594:
591:
588:
585:
582:
579:
576:
573:
570:
565:
555:
554:
552:
549:
543:
540:
539:
538:
536:
531:
523:
516:
509:
497:
494:
480:
477:
468:
467:
452:over-the-board
449:
415:
414:
412:
411:
404:
397:
389:
386:
385:
382:
381:
376:
371:
366:
361:
355:
350:
349:
346:
345:
341:
340:
335:
330:
325:
320:
315:
310:
305:
300:
294:
293:
286:
285:
282:
281:
276:
275:
269:
268:
267:
266:
258:
257:
251:
250:
249:
248:
243:
235:
234:
224:
223:
222:
221:
210:
205:
200:
192:
191:
190:
189:
184:
179:
174:
166:
161:
156:
151:
143:
142:
136:
135:
134:
133:
131:Self-reference
128:
123:
118:
110:
109:
103:
102:
101:
100:
95:
87:
86:
78:
73:
72:
69:
68:
60:
59:
53:
52:
46:
30:
29:
26:
24:
14:
13:
10:
9:
6:
4:
3:
2:
4544:
4533:
4530:
4528:
4525:
4524:
4522:
4507:
4504:
4502:
4497:
4492:
4491:
4488:
4482:
4481:Solving chess
4479:
4477:
4474:
4472:
4471:Chess prodigy
4469:
4465:
4462:
4460:
4457:
4456:
4455:
4454:Chess problem
4452:
4448:
4445:
4443:
4440:
4438:
4435:
4433:
4430:
4429:
4428:
4425:
4423:
4420:
4418:
4415:
4413:
4410:
4408:
4405:
4404:
4402:
4398:
4392:
4389:
4387:
4384:
4382:
4379:
4375:
4374:
4370:
4368:
4365:
4363:
4362:opening books
4360:
4359:
4358:
4355:
4351:
4350:short stories
4348:
4346:
4343:
4341:
4338:
4336:
4333:
4331:
4328:
4326:
4323:
4322:
4321:
4318:
4316:
4313:
4311:
4308:
4307:
4305:
4303:Art and media
4301:
4293:
4290:
4288:
4285:
4283:
4280:
4278:
4275:
4273:
4270:
4268:
4265:
4264:
4262:
4258:
4255:
4253:
4250:
4248:
4245:
4243:
4240:
4238:
4235:
4233:
4230:
4228:
4225:
4223:
4220:
4218:
4215:
4213:
4210:
4209:
4207:
4203:
4200:
4198:
4195:
4193:
4190:
4188:
4185:
4184:
4183:
4180:
4176:
4173:
4172:
4171:
4168:
4166:
4163:
4162:
4160:
4158:
4154:
4148:
4145:
4143:
4140:
4138:
4135:
4133:
4130:
4128:
4125:
4121:
4118:
4116:
4115:triangulation
4113:
4111:
4110:Tarrasch rule
4108:
4106:
4103:
4101:
4098:
4097:
4095:
4091:
4088:
4086:
4083:
4082:
4081:
4078:
4076:
4073:
4071:
4070:Queen vs pawn
4068:
4066:
4063:
4061:
4058:
4056:
4053:
4051:
4048:
4046:
4043:
4042:
4040:
4038:
4034:
4022:
4019:
4017:
4014:
4012:
4009:
4008:
4007:
4004:
4002:
3999:
3995:
3992:
3991:
3990:
3987:
3986:
3984:
3980:
3974:
3971:
3969:
3966:
3962:
3959:
3957:
3954:
3952:
3949:
3947:
3944:
3942:
3939:
3938:
3937:
3934:
3932:
3929:
3927:
3926:London System
3924:
3920:
3917:
3915:
3912:
3910:
3907:
3905:
3902:
3900:
3897:
3895:
3892:
3890:
3887:
3885:
3884:Modern Benoni
3882:
3880:
3877:
3876:
3875:
3872:
3870:
3867:
3865:
3864:Dutch Defence
3862:
3860:
3857:
3855:
3852:
3851:
3849:
3847:
3843:
3835:
3832:
3830:
3827:
3825:
3821:
3818:
3816:
3813:
3812:
3811:
3808:
3806:
3803:
3799:
3796:
3795:
3794:
3791:
3789:
3786:
3782:
3779:
3777:
3774:
3772:
3769:
3767:
3764:
3762:
3759:
3757:
3754:
3752:
3749:
3747:
3744:
3742:
3741:King's Gambit
3739:
3737:
3734:
3732:
3729:
3727:
3724:
3723:
3722:
3719:
3717:
3714:
3712:
3709:
3707:
3704:
3702:
3699:
3697:
3694:
3693:
3691:
3689:
3685:
3677:
3674:
3672:
3669:
3668:
3667:
3664:
3662:
3659:
3657:
3656:Grob's Attack
3654:
3652:
3649:
3647:
3646:Dunst Opening
3644:
3642:
3639:
3637:
3636:Benko Opening
3634:
3633:
3631:
3629:
3628:Flank opening
3625:
3622:
3620:
3616:
3610:
3607:
3605:
3602:
3600:
3597:
3593:
3590:
3588:
3585:
3583:
3580:
3578:
3575:
3574:
3573:
3570:
3568:
3565:
3561:
3558:
3557:
3556:
3553:
3549:
3546:
3545:
3544:
3541:
3539:
3536:
3535:
3533:
3531:
3527:
3521:
3518:
3516:
3513:
3511:
3508:
3506:
3503:
3501:
3498:
3494:
3491:
3490:
3489:
3486:
3484:
3481:
3479:
3476:
3474:
3471:
3469:
3466:
3464:
3461:
3459:
3456:
3454:
3451:
3449:
3446:
3444:
3441:
3439:
3436:
3434:
3431:
3429:
3426:
3424:
3421:
3417:
3414:
3413:
3412:
3409:
3407:
3404:
3403:
3401:
3399:
3395:
3389:
3386:
3384:
3383:Transposition
3381:
3379:
3376:
3374:
3371:
3367:
3364:
3362:
3359:
3357:
3354:
3352:
3349:
3347:
3344:
3343:
3342:
3339:
3337:
3334:
3330:
3327:
3326:
3325:
3322:
3320:
3317:
3315:
3312:
3310:
3307:
3305:
3302:
3298:
3295:
3293:
3290:
3288:
3285:
3283:
3280:
3278:
3275:
3274:
3273:
3270:
3268:
3265:
3264:
3262:
3260:
3256:
3250:
3247:
3245:
3242:
3238:
3235:
3234:
3233:
3230:
3228:
3225:
3223:
3222:
3218:
3214:
3211:
3209:
3206:
3204:
3201:
3199:
3196:
3194:
3191:
3190:
3189:
3186:
3184:
3181:
3179:
3176:
3174:
3171:
3169:
3166:
3165:
3163:
3161:
3157:
3149:
3146:
3144:
3141:
3139:
3136:
3135:
3134:
3133:Chess museums
3131:
3129:
3126:
3122:
3119:
3117:
3114:
3112:
3109:
3108:
3107:
3104:
3102:
3101:Notable games
3099:
3095:
3092:
3088:
3085:
3083:
3080:
3079:
3078:
3075:
3073:
3070:
3066:
3063:
3062:
3061:
3058:
3057:
3056:
3053:
3049:
3046:
3044:
3041:
3039:
3036:
3034:
3031:
3029:
3026:
3024:
3021:
3019:
3018:
3014:
3012:
3011:
3007:
3006:
3005:
3002:
3001:
2999:
2997:
2993:
2986:
2980:
2978:
2975:
2973:
2970:
2966:
2963:
2961:
2958:
2956:
2953:
2951:
2948:
2946:
2943:
2941:
2938:
2936:
2933:
2932:
2931:
2928:
2924:
2921:
2919:
2916:
2914:
2911:
2910:
2909:
2906:
2905:
2903:
2901:
2897:
2891:
2890:World records
2888:
2884:
2881:
2880:
2879:
2876:
2872:
2869:
2867:
2864:
2863:
2862:
2861:Rating system
2859:
2853:
2850:
2849:
2848:
2845:
2843:
2840:
2839:
2838:
2835:
2833:
2830:
2828:
2825:
2823:
2820:
2816:
2813:
2811:
2808:
2806:
2803:
2801:
2798:
2797:
2796:
2793:
2789:
2786:
2785:
2784:
2781:
2779:
2776:
2775:
2773:
2771:
2767:
2763:
2756:
2751:
2749:
2744:
2742:
2737:
2736:
2733:
2726:
2722:
2718:
2714:
2710:
2707:
2704:
2703:1-879479-33-8
2700:
2696:
2692:
2689:
2686:
2685:1-901983-66-8
2682:
2678:
2674:
2671:
2668:
2667:0-571-15363-1
2664:
2660:
2656:
2655:Morse, Jeremy
2653:
2650:
2646:
2642:
2638:
2635:
2632:
2631:0-486-20748-X
2628:
2624:
2620:
2617:
2614:
2610:
2606:
2603:
2600:
2599:
2594:
2591:
2588:
2584:
2583:1-85223-240-4
2580:
2576:
2572:
2569:
2568:
2564:
2557:
2553:
2550:
2546:
2542:
2536:
2533:
2528:
2522:
2518:
2511:
2508:
2504:
2498:
2494:
2490:
2483:
2480:
2475:
2471:
2465:
2463:
2459:
2452:
2448:
2445:
2443:
2440:
2438:
2435:
2434:
2430:
2428:
2426:
2421:
2417:
2415:
2411:
2407:
2403:
2402:Lev Loshinsky
2399:
2395:
2394:Marian Wróbel
2391:
2390:Cyril Kipping
2387:
2383:
2379:
2375:
2370:
2368:
2364:
2360:
2356:
2348:
2346:
2342:
2340:
2334:
2327:
2325:
2323:
2318:
2315:
2311:
2305:
2303:
2299:
2293:
2289:
2283:
2281:
2279:
2271:
2269:
2266:
2260:
2256:
2254:
2250:
2248:
2244:
2242:
2238:
2235:
2231:
2227:
2223:
2221:
2217:
2216:
2215:
2209:Abbreviations
2208:
2206:
2204:
2200:
2184:
2181:
2178:
2175:
2172:
2169:
2166:
2163:
2160:
2158:
2157:
2153:
2150:
2149:
2145:
2142:
2141:
2137:
2134:
2133:
2129:
2126:
2125:
2121:
2118:
2117:
2113:
2110:
2109:
2105:
2102:
2101:
2097:
1924:
1923:
1920:
1917:
1914:
1911:
1908:
1905:
1902:
1899:
1896:
1894:
1893:
1888:
1886:
1882:
1878:
1873:
1864:
1861:
1858:
1855:
1852:
1849:
1846:
1843:
1840:
1837:
1834:
1831:
1828:
1825:
1822:
1819:
1816:
1813:
1810:
1809:
1808:
1804:
1803:
1802:
1800:
1795:
1783:
1780:
1777:
1774:
1771:
1768:
1765:
1762:
1759:
1757:
1756:
1752:
1749:
1748:
1744:
1741:
1740:
1736:
1733:
1732:
1728:
1725:
1724:
1720:
1717:
1716:
1712:
1709:
1708:
1704:
1701:
1700:
1696:
1565:
1564:
1561:
1558:
1555:
1552:
1549:
1546:
1543:
1540:
1537:
1535:
1534:
1526:
1516:
1511:
1506:
1503:
1498:
1491:
1487:
1484:
1479:
1476:
1472:
1469:
1463:
1461:
1458:
1454:
1450:
1446:
1442:
1438:
1437:
1436:
1433:
1429:
1420:
1413:
1411:
1409:
1400:
1396:
1392:
1388:
1384:
1380:
1377:
1372:
1371:
1367:
1366:
1364:
1360:
1356:
1355:
1351:
1350:
1349:
1346:
1344:
1340:
1339:knight's tour
1336:
1331:
1327:
1325:
1324:
1319:
1315:
1306:
1302:
1301:
1297:
1292:
1289:
1286:
1283:
1280:
1277:
1274:
1271:
1270:
1268:
1267:
1263:
1260:
1254:
1252:
1251:
1247:
1244:
1243:
1242:Helpselfmates
1239:
1236:
1235:
1231:
1228:
1227:
1223:
1210:
1209:
1205:
1202:
1199:
1196:
1193:
1192:
1182:
1179:
1178:
1177:
1170:
1158:
1155:
1152:
1149:
1146:
1143:
1140:
1137:
1134:
1132:
1131:
1127:
1124:
1123:
1119:
1116:
1115:
1111:
1108:
1107:
1103:
1100:
1099:
1095:
1092:
1091:
1087:
1084:
1083:
1079:
1076:
1075:
1071:
947:
946:
943:
940:
937:
934:
931:
928:
925:
922:
919:
917:
916:
898:
891:
888:
886:1...Nc2 2.b4#
885:
882:
879:
876:
873:
870:
867:
864:
863:
862:
860:
845:
842:
839:
836:
833:
830:
827:
824:
821:
819:
818:
814:
811:
810:
806:
803:
802:
798:
795:
794:
790:
787:
786:
782:
779:
778:
774:
771:
770:
766:
763:
762:
758:
599:
598:
595:
592:
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485:chess problem
478:
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436:
432:
428:
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423:chess problem
410:
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379:Puzzle topics
377:
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71:
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66:
62:
61:
58:
54:
50:
49:
42:
38:
34:
19:
4453:
4427:Chess engine
4412:Chess boxing
4372:
4142:Wrong bishop
3994:theory table
3968:Torre Attack
3951:Slav Defence
3859:Colle System
3834:Scheveningen
3793:Pirc Defence
3736:Italian Game
3731:Giuoco Piano
3676:Réti Opening
3599:Piece values
3587:Maróczy Bind
3548:the exchange
3538:Compensation
3468:Interference
3458:Double check
3232:Time control
3219:
3193:by agreement
3121:grandmasters
3065:South Africa
3015:
3008:
2984:Score sheets
2930:Chess pieces
2837:Online chess
2783:Chess titles
2778:Chess theory
2716:
2694:
2676:
2658:
2648:
2622:
2612:
2596:
2574:
2535:
2516:
2510:
2497:kotesovec.cz
2496:
2489:Thompson, K.
2482:
2473:
2422:
2418:
2374:André Chéron
2371:
2352:
2343:
2335:
2331:
2321:
2319:
2310:patrol chess
2306:
2287:
2277:
2275:
2267:
2263:
2258:
2252:
2246:
2240:
2233:
2229:
2225:
2219:
2212:
2202:
2194:
1880:
1874:
1870:
1796:
1793:
1524:
1509:
1501:
1482:
1477:for a list).
1467:
1456:
1452:
1448:
1444:
1426:The role of
1425:
1405:
1394:
1386:
1378:
1368:
1362:
1358:
1352:
1347:
1343:eight queens
1332:
1321:
1311:
1298:
1290:
1284:
1278:
1272:
1266:Seriesmovers
1264:
1258:
1248:
1240:
1232:
1224:
1206:
1201:Three-movers
1200:
1194:
1180:
1175:
897:knight wheel
896:
856:
558:
545:
526:
519:
512:
505:
499:
484:
482:
457:
435:chess pieces
426:
422:
420:
298:Brain teaser
207:
169:
154:Construction
36:
4357:Chess books
4157:Tournaments
4016:Fool's mate
3781:Vienna Game
3771:Scotch Game
3604:Prophylaxis
3520:Zwischenzug
3505:Undermining
3473:Overloading
3433:Combination
3282:descriptive
2977:Chess table
2972:Chess clock
2788:Grandmaster
2609:Wilts, Gerd
2589:' problems.
2577:, Crowood.
2414:FIDE Albums
2386:Jan Hartong
2363:FIDE Master
2355:Grandmaster
2322:anticipated
2272:Tournaments
1877:Organ Pipes
1408:fairy chess
1250:Reflexmates
1181:Directmates
518:There is a
513:stipulation
458:unrealistic
273:Metapuzzles
149:Combination
4521:Categories
4464:joke chess
4417:Chess club
4105:opposition
3567:Middlegame
3555:Initiative
3478:Pawn storm
3443:Deflection
3314:Key square
3304:Fianchetto
3237:Fast chess
3221:En passant
2913:chessboard
2691:Rice, John
2673:Nunn, John
2645:Rice, John
2501:– longest
2453:References
2423:The title
2253:reflexmate
1363:en passant
1323:En passant
1273:Seriesmate
1208:Moremovers
1195:Two-movers
530:solution).
479:Definition
333:Puzzlehunt
218:Logic maze
140:Mechanical
126:Logic grid
116:Dissection
18:Directmate
4447:Stockfish
4437:Deep Blue
4432:AlphaZero
4340:paintings
4132:Tablebase
4096:Strategy
4006:Irregular
3761:Ruy Lopez
3721:Open Game
3488:Sacrifice
3448:Desperado
3351:connected
3324:Open file
3319:King walk
3277:algebraic
3208:Stalemate
3183:Checkmate
2908:Chess set
2900:Equipment
2503:moremover
2226:stalemate
2220:checkmate
1502:obtrusive
1440:blunders.
1387:Le Sphinx
1234:Selfmates
1226:Helpmates
1187:", where
483:The term
446:checkmate
338:Syllogism
241:Crossword
121:Induction
98:Situation
4506:Category
4459:glossary
4120:Zugzwang
4100:fortress
4037:Endgames
3946:Declined
3941:Accepted
3619:Openings
3577:Hedgehog
3543:Exchange
3530:Strategy
3510:Windmill
3361:isolated
3346:backward
3168:Castling
3111:amateurs
3004:Timeline
2878:Variants
2832:Glossary
2815:software
2800:glossary
2715:(2012),
2693:(1996),
2675:(1985),
2651:, Faber.
2647:(1963),
2621:(1961),
2611:(1991),
2573:(1989),
2552:Archived
2431:See also
2304:(PCCC).
2294:informal
2278:tourneys
2247:selfmate
2241:helpmate
1885:Grimshaw
1799:zugzwang
1490:promoted
1445:key move
1383:Sam Loyd
1314:castling
506:composed
496:Features
489:tactical
172:problems
84:Guessing
4407:Arbiter
4400:Related
4257:Solving
4247:Amateur
3829:Najdorf
3411:Battery
3398:Tactics
3373:Swindle
3356:doubled
3336:Outpost
3267:Blunder
3082:Armenia
2996:History
2842:Premove
2810:engines
2805:matches
2770:Outline
1457:unsound
1305:endgame
1300:Studies
527:economy
429:, is a
323:Paradox
303:Dilemma
216: (
203:Sliding
177:Folding
57:Puzzles
4345:poetry
4335:novels
4310:Caïssa
4242:Senior
4232:Junior
3820:Dragon
3815:Alapin
3500:Skewer
3366:passed
3309:Gambit
3116:female
3077:Europe
3060:Africa
2955:Knight
2950:Bishop
2723:
2701:
2683:
2665:
2629:
2581:
2523:
2408:, and
2349:Titles
2290:formal
2259:series
1453:cooked
1359:retros
431:puzzle
289:Topics
246:Sudoku
232:Number
187:Tiling
93:Riddle
4292:WCSCC
4237:Youth
4227:Blitz
4222:Rapid
4212:Women
4175:Women
4127:Study
3982:Other
3515:X-ray
3438:Decoy
3423:Block
3378:Tempo
3341:Pawns
3259:Terms
3178:Check
3160:Rules
3094:India
3087:Spain
3072:China
2965:Fairy
2940:Queen
2871:norms
2762:Chess
2314:Lacny
1805:1 Rh1
520:theme
442:board
439:chess
437:on a
352:Lists
264:Mazes
208:Chess
182:Stick
107:Logic
75:Types
39:, by
4330:film
4287:WCCC
4282:TCEC
4272:CSVN
4217:Team
4187:List
3463:Fork
3388:Trap
3188:Draw
2960:Pawn
2945:Rook
2935:King
2883:List
2852:list
2827:FIDE
2721:ISBN
2711:and
2699:ISBN
2681:ISBN
2663:ISBN
2643:and
2627:ISBN
2607:and
2579:ISBN
2521:ISBN
2392:and
2361:and
2203:down
1468:dual
1464:each
1255:must
308:Joke
230:and
228:Word
214:Maze
198:Tour
164:Lock
4267:CCC
3483:Pin
3287:PGN
2541:doi
2292:or
2234:pat
2199:NRK
1449:key
1447:or
1397:in
1328:not
4523::
2639:,
2595:,
2495:.
2472:.
2461:^
2404:,
2400:,
2388:,
2384:,
2380:,
2376:,
2357:,
1527:,
899:.)
561:,
464:.
421:A
170:Go
3822:/
2754:e
2747:t
2740:v
2543::
2529:.
2499:.
2476:.
2230:p
2182:h
2179:g
2176:f
2173:e
2170:d
2167:c
2164:b
2161:a
2154:1
2151:1
2146:2
2143:2
2138:3
2135:3
2130:4
2127:4
2122:5
2119:5
2114:6
2111:6
2106:7
2103:7
2098:8
1925:8
1918:h
1915:g
1912:f
1909:e
1906:d
1903:c
1900:b
1897:a
1807:!
1781:h
1778:g
1775:f
1772:e
1769:d
1766:c
1763:b
1760:a
1753:1
1750:1
1745:2
1742:2
1737:3
1734:3
1729:4
1726:4
1721:5
1718:5
1713:6
1710:6
1705:7
1702:7
1697:8
1566:8
1559:h
1556:g
1553:f
1550:e
1547:d
1544:c
1541:b
1538:a
1481:(
1261:.
1217:n
1213:n
1189:n
1185:n
1156:h
1153:g
1150:f
1147:e
1144:d
1141:c
1138:b
1135:a
1128:1
1125:1
1120:2
1117:2
1112:3
1109:3
1104:4
1101:4
1096:5
1093:5
1088:6
1085:6
1080:7
1077:7
1072:8
948:8
941:h
938:g
935:f
932:e
929:d
926:c
923:b
920:a
859:!
843:h
840:g
837:f
834:e
831:d
828:c
825:b
822:a
815:1
812:1
807:2
804:2
799:3
796:3
791:4
788:4
783:5
780:5
775:6
772:6
767:7
764:7
759:8
600:8
593:h
590:g
587:f
584:e
581:d
578:c
575:b
572:a
408:e
401:t
394:v
220:)
20:)
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