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Reflexmate
A reflexmate is a chess problem in which White, moving first, must force Black to deliver checkmate within a specified number of moves against their will – with the added condition that if either player can give checkmate, they must. If this condition applies only to Black, it is a semi-reflexmate. (Without this condition, the problem is just ordinary selfmate.) Example The problem illustrated is a fairly recent example, successful in the World Chess Composing Tournament despite only a single phase of play present. It is by Štefan Sovík and is a reflexmate in two moves. The is 1.Qh5 and White threatens 2.Nbxc3, after which Black is compelled by additional condition to mate by Rxc3, with triple pin of Rc4, Bd4 and Ne4. There are three thematical variations with unpinnings of three pieces, but every time Black has to mate by after selfpin of unpinned piece on c3: * 1...Qxa4 2.Rxc3 Qb5# (White move: rook unpinned by queen move selfpins) * 1...Rxc8 2.Bxc3 Rd8# (White ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chess Problems
A chess problem, also called a chess composition, is a puzzle created by the composer using chess pieces on a chessboard, 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 checkmate Black in two moves against any possible defence. A chess problem fundamentally differs from 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 are unrealistic in the sense that they are very unlikely to occur in over-the-board play. There is a substantial amount of specialized jargon used in connection with chess problems. Definition The term chess problem is not sharply defined: there is no clear demarcation between chess compositions on the one hand and puzzle or tactical exercises on the other. In practice, however, the distinction is very clear. There are comm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chess Problem
A chess problem, also called a chess composition, is a puzzle created by the composer using chess pieces on a chessboard, 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 checkmate Black in two moves against any possible defence. A chess problem fundamentally differs from 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 are unrealistic in the sense that they are very unlikely to occur in over-the-board play. There is a substantial amount of specialized jargon used in connection with chess problems. Definition The term chess problem is not sharply defined: there is no clear demarcation between chess compositions on the one hand and puzzle or tactical exercises on the other. In practice, however, the distinction is very clear. There are common c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Selfmate
A selfmate is a chess problem in which White, moving first, must force Black to deliver checkmate within a specified number of moves. Selfmates were once known as sui-mates. Example The problem shown is a relatively simple example. It is a selfmate in two by Wolfgang Pauly from ''The Theory of Pawn Promotion'', 1912: White moves first and compels Black to deliver checkmate on or before Black's second move. If White can leave Black with no option but to play Bxg2#, the problem is solved. * White might try moving the bishop, but this is no good, as it will allow Black to play a non-capturing bishop move himself, delaying the mate beyond move two; * moving the knight allows the king to move; * 1.e6 allows 1...exf6 and 2...f5; * 1.f7 or 1.fxe7 allows 1...Kxg7; * 1.g8=Q or 1.g8=R are no good after 1...Bxg2+ 2.Q/Rxg2; * 1.g8=N# checkmates Black, which is entirely wrong; * 1.g8=B is also no good, since after 1...exf6 2.exf6 Bxg2+ the bishop can interpose with 3.Bd5. The only move ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Motif (chess Composition)
In chess composition, a motif is basic element of a move in the consideration why the piece moves and how it supports the fulfillment of a stipulation. Any move may and often does contain multiple motifs. Some composition schools put specific emphasis on motivation in chess problems, especially strategical school and Slovak school. A composition where a maximum number of a certain motif occurrences is shown is called a task, even if the term task is more general. Classification of motifs Motifs may be classified according to various viewpoints. In the usual twomovers they might be: * Positive - those working towards the accomplishment of the stipulation ** Attacking - positive motifs of white moves ** Weakening - negative motifs of white moves * Negative - those tending to hinder the accomplishment of the stipulation ** Defensive - negative motifs of black moves ** Harmful - positive motifs of black moves Similar classification is valid for all directmates, selfmates, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Checkmate
Checkmate (often shortened to mate) is any game position in chess and other chess-like games in which a player's king is in check (threatened with ) and there is no possible escape. Checkmating the opponent wins the game. In chess, the king is never actually captured. The player loses as soon as their king is checkmated. In formal games, it is usually considered good etiquette to resign an inevitably lost game before being checkmated. If a player is not in check but has no legal moves, then it is '' stalemate'', and the game immediately ends in a draw. A checkmating move is recorded in algebraic notation using the hash symbol "#", for example: 34.Qg3#. Examples A checkmate may occur in as few as two moves on one side with all of the pieces still on the board (as in fool's mate, in the opening phase of the game), in a middlegame position (as in the 1956 game called the Game of the Century between Donald Byrne and Bobby Fischer), or after many moves with as few as t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World Chess Composing Tournament
The world is the totality of entities, the whole of reality, or everything that exists. The nature of the world has been conceptualized differently in different fields. Some conceptions see the world as unique, while others talk of a "plurality of worlds". Some treat the world as one simple object, while others analyze the world as a complex made up of parts. In scientific cosmology, the world or universe is commonly defined as "the totality of all space and time; all that is, has been, and will be". Theories of modality talk of possible worlds as complete and consistent ways how things could have been. Phenomenology, starting from the horizon of co-given objects present in the periphery of every experience, defines the world as the biggest horizon, or the "horizon of all horizons". In philosophy of mind, the world is contrasted with the mind as that which is represented by the mind. Theology conceptualizes the world in relation to God, for example, as God's creation, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phase Of Play
Phases of play are parts of a chess problem which happen, as it were, concurrently rather than consecutively. Each problem has at least one phase: the ''post-key play'' or ''actual play''; that is, the play after the key (the first move which leads to the problem's stipulation ("mate in two" or similar) being fulfilled). Other phases, which may or may not be present, are: *set play: play which would occur if it were the other side to move first in the diagram position (for instance, in a directmate, where it is usually White to move first, set play consists of lines where Black moves first) *try play: play after '' tries''; that is, moves which almost meet the stipulation, but which fail, normally to a single Black defence *solutions to twins: slight variations to the problem brought about by, for example, changing the position of a piece, or switching the position of two pieces *extra solutions: some problems intentionally have more than one solution; in this case, each is a dis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Štefan Sovík
Štefan is a Slavic given name and surname. Notable people with the name include: Given name * Štefan Babjak (1931–2008), Slovak classical baritone opera singer * Štefan Banič (1870–1941), Slovak inventor who patented an early parachute design * Štefan Čambal (1908–1990), Slovak football player and manager * Štefan Chrtianský (other), multiple people * Štefan Füle (born 1962), Czech diplomat * Štefan Gerec (born 1992), Slovak football striker * Štefan Hadalin (born 1995), Slovenian alpine ski racer * Štefan Harabin (born 1957), Slovak judge and politician * Štefan Holiš (born 1992), Slovak footballer * Štefan Horný (born 1957), Slovak football player * Štefan Jačiansky (1930–1995), Slovak football manager * Štefan Kvietik (1936–2025), Slovak actor * Štefan Maixner (born 1968), Slovak football striker * Štefan Malík (born 1966), Slovak race walker * Štefan Martiš Slovak fighter ace during World War II * Štefan Matlák (1934–200 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pin (chess)
In chess, a pin is a tactic in which a defending piece cannot move out of an attacking piece's line of attack without exposing a more valuable defending piece. Moving the attacking piece to effect the pin is called ''pinning''; the defending piece restricted by the pin is described as ''pinned''. Only a piece that can move any number of squares along a horizontal, vertical, or diagonal line (i.e. a bishop, rook, or queen) can pin. Any piece can be pinned except the king. The pin is one of the most powerful chess tactics. The inverse of a pin is a ''skewer'', in which a more valuable piece under direct attack may move to expose a less valuable piece to an attack. Types Absolute pin An ''absolute pin'' is one where the piece shielded by the pinned piece is the king. In this case it is illegal to move the pinned piece out of the line of attack, as that would place one's king in check (see diagram). A piece pinned in this way can still give check or defend another piece fr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rook (chess)
The rook (; ♖, ♜) is a piece in the game of chess. It may move any number of squares horizontally or vertically without jumping, and it may an enemy piece on its path; it may participate in castling. Each player starts the game with two rooks, one in each corner on their side of the board. Formerly, the rook (from ) was alternatively called the ''tower'', ''marquess'', ''rector'', and ''comes'' (''count'' or ''earl''). The term "castle" is considered to be informal or old-fashioned. Placement and movement The white rooks start on the squares a1 and h1, while the black rooks start on a8 and h8. The rook moves horizontally or vertically, through any number of unoccupied squares. The rook cannot jump over pieces. The rook may capture an enemy piece by moving to the square on which the enemy piece stands, removing it from play. The rook also participates with the king in a special move called castling, wherein it is transferred to the square crossed by the king after th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Queen (chess)
The queen (♕, ♛) is the most powerful piece in the game of chess. It can move any number of squares vertically, horizontally or , combining the powers of the rook and bishop. Each player starts the game with one queen, placed in the middle of the first next to the king. Because the queen is the strongest piece, a pawn is promoted to a queen in the vast majority of cases; if a pawn is promoted to a piece other than a queen, it is an underpromotion. The predecessor to the queen is the '' ferz'', a weak piece only able to move or capture one step diagonally, originating from the Persian game of shatranj. The queen acquired its modern move in Spain in the 15th century. Placement and movement The white queen starts on d1, while the black queen starts on d8. With the chessboard oriented correctly, the white queen starts on a white square and the black queen starts on a black square—thus the mnemonics "queen gets her color", "queen on er wncolor", or "the dress uee ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bishop (chess)
The bishop (♗, ♝) is a Chess piece, piece in the game of chess. It moves and captures along without jumping over interfering pieces. Each player begins the game with two bishops. The starting squares are c1 and f1 for White's bishops, and c8 and f8 for Black's bishops. Placement and movement The is placed on f1 for White and f8 for Black; the is placed on c1 for White and c8 for Black. The bishop has no restrictions in distance for each move but is limited to diagonal movement. It cannot jump over other pieces. A bishop captures by occupying the square on which an enemy piece stands. As a consequence of its diagonal movement, each bishop always remains on one square color. Due to this, it is common to refer to a bishop as a ''light-squared'' or ''dark-squared'' bishop. Comparison – other pieces Versus rook A rook (chess), rook is generally worth about two Pawn (chess), pawns more than a bishop. The bishop has access to only half of the squares on the board, w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
