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The result is an Open Game. Other responses to 1.e4 are termed Semi-Open Games or Single King's Pawn Games. When written in lowercase, the term "open game" refers to a chess position where ranks, files and diagonals are open, and tending to more tactical gameplay. It is possible that an Open Game may lead to a closed game. [1]
The rules of chess (also known as the laws of chess) govern the play of the game of chess. Chess is a two-player abstract strategy board game . Each player controls sixteen pieces of six types on a chessboard .
A Closed Game (or Double Queen's Pawn Opening) is a chess opening that begins with the moves: . 1. d4 d5. The move 1.d4 offers the same benefits to development and center control as does 1.e4, but unlike with the king's pawn openings where the e4-pawn is undefended after the first move, the d4-pawn is protected by White's queen.
Single king pawn or semi-open games (1.e4 other) Double queen pawn or closed games (1.d4 d5) Single queen pawn or semi-closed games (1.d4 other) Flank openings (including 1.c4, 1.Nf3, 1.f4, and others) Unusual first moves for White; The Indian systems (1.d4 Nf6) are the most important [22] of the semi-closed games, and warrant separate treatment.
In chess, an irregular opening is an opening considered unusual or unorthodox. In the early 19th century the term was used for any opening not beginning with 1.e4 e5 (the Open Game) or 1.d4 d5 (the Closed Game). As opening theory has developed and openings formerly considered "irregular" have become standard, the term has been used less frequently.
Endgame chess (or the Pawns Game, with unknown origins): Players start the game with only pawns and a king. Normal check, checkmate, en passant, and pawn promotion rules apply. [6] Los Alamos chess (or anti-clerical chess): Played on a 6×6 board without bishops. This was the first chess-like game played by a computer program.
The modern rules of chess (and breaking them) are discussed in separate articles, and briefly in the following subsections: Rules of chess – rules governing the play of the game of chess. White and Black in chess – one set of pieces is designated "white" and the other is designated "black". White moves first.
Refusal of a player to comply with the rules may result in penalty, up to and including forfeiture of the game or even disqualification of the player. If two opponents both refuse to obey the rules, the game may be considered lost by both players. In 1976, smoking was banned in a major tournament for the first time (the National Open, Las Vegas ...