Grasshopper Chess
Grasshopper chess is a chess variant in which pawns can promote to the fairy piece ''grasshopper''. The grasshopper (shown as an inverted queen) moves as a queen but must jump over a piece and land one square past the piece that they jump in order to move or capture. In some variations, grasshoppers may also be present on the board in the opening position, in addition to the usual pieces. For example, pawns can be moved forward and grasshoppers put along the 2nd and 7th as shown in the diagram. Another possibility is to replace queens with grasshoppers in the initial position, where pawns are not allowed to take two steps on their initial move, but still promote to queens. References External links Grasshopper chessby Hans Bodlaender, ''The Chess Variant Pages ''The Chess Variant Pages'' is a non-commercial website devoted to chess variants. It was created by Hans Bodlaender in 1995. The site is "run by hobbyists for hobbyists" and is "the most wide-ranging and authori ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
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Chess Variant
A chess variant is a game related to, derived from, or inspired by chess. Such variants can differ from chess in many different ways. "International" or "Western" chess itself is one of a family of games which have related origins and could be considered variants of each other. Chess developed from ''chaturanga'', from which other members of this family, such as ''makruk, ouk chatrang'', ''shatranj'', Tamerlane chess, ''shogi'', and ''xiangqi'' also evolved. Many chess variants are designed to be played with the equipment of regular chess. Most variants have a similar public-domain status as their parent game, but some have been made into commercial proprietary games. Just as in traditional chess, chess variants can be played over the board, Correspondence chess, by correspondence, or computer chess, by computer. Some internet chess servers facilitate the play of some variants in addition to orthodox chess. In the context of chess problems, chess variants are called heterodox che ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Promotion (chess)
In chess, promotion is the replacement of a pawn with a new piece when the pawn is moved to its . The player replaces the pawn immediately with a queen, rook, bishop, or knight of the same . The new piece does not have to be a previously captured piece. Promotion is mandatory when moving to the last rank; the pawn cannot remain as a pawn. Promotion to a queen is known as ''queening''; promotion to any other piece is known as '' underpromotion''. Promotion is almost always to a queen, as it is the most powerful piece. Underpromotion might be done for various reasons, such as to avoid stalemate or for tactical reasons related to the knight's unique movement pattern. Promotion or the threat of it often decides the result in an endgame. Rules When a pawn is promoted, it is removed from the board, and the new piece is placed on the square the pawn moved to. Any piece may be promoted to regardless of whether it has been captured. Consequently, a player might have two or more quee ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
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Fairy Chess Piece
A fairy chess piece, variant chess piece, unorthodox chess piece, or heterodox chess piece is a chess piece not used in conventional chess but incorporated into certain chess variants and some unorthodox chess problems, known as fairy chess. Compared to conventional pieces, fairy pieces vary mostly in Rules of chess#Movement, the way they move, but they may also follow special rules for capturing, promotions, etc. Because of the distributed and uncoordinated nature of unorthodox chess development, the same piece can have different names, and different pieces can have the same name in various contexts. Most are symbolised as inverted or rotated icons of the standard pieces in diagrams, and the meanings of these "wildcards" must be defined in each context separately. Pieces invented for use in chess variants rather than problems sometimes instead have special icons designed for them, but with some exceptions (the princess (chess), princess, empress (chess), empress, and occasionally a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Grasshopper (chess)
The grasshopper is a fairy chess piece that moves along , , and (like a queen) but only by hopping over another piece. The piece to be hopped may be of either color and any distance away, but the grasshopper must land on the square immediately beyond it in the same direction. If there is no piece to hop over, it cannot move. If the square beyond a piece is occupied by a piece of the opposite color, the grasshopper can capture that piece. The grasshopper was introduced by T. R. Dawson in 1913 in problems published in the ''Cheltenham Examiner'' newspaper. It is one of the most popular fairy pieces used in chess problems. In this article, the grasshopper is shown as an inverted queen and notated as ''G''. Movement In the diagram to the right, the white grasshopper on d4 can move to the squares marked with crosses (b2, d1, d7, and h8) or capture the black pawn on a7. It cannot move to g4, as there are two pieces to hop over. Example problem Solution: :1. Gh3 Gh4 2. Gh5 Gh6 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
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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] [Amazon] |
Hans Bodlaender
Hans Leo Bodlaender (born April 21, 1960) is a Dutch computer scientist, a professor of computer science at Utrecht University. Bodlaender is known for his work on graph algorithms and parameterized complexity and in particular for algorithms relating to tree decomposition of graphs. Life and work Born in Bennekom, Bodlaender was educated at Utrecht University, earning a doctorate in 1986 under the supervision of Jan van Leeuwen with the thesis ''Distributed Computing – Structure and Complexity.'' After postdoctoral research at the Massachusetts Institute of Technology in 1987, he returned to Utrecht as a faculty member. In 1987 he was appointed Assistant Professor and in 2003 Associate Professor. In 2014 he became full professor of algorithms and complexity at Utrecht, and at the same time added a part-time professorship in network algorithms at Eindhoven University of Technology. Bodlaender has written extensively about chess variants and founded the website ''The Chess V ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
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The Chess Variant Pages
''The Chess Variant Pages'' is a non-commercial website devoted to chess variants. It was created by Hans Bodlaender in 1995. The site is "run by hobbyists for hobbyists" and is "the most wide-ranging and authoritative web site on chess variants". The site contains a large compilation of games with published rules. The aims of the site are to educate readers about chess variants, encourage gameplay, and provide a place for free discussion. The site has featured game competitions as well as variant design competitions, and provides facilities for publishing documents. Numerous files are available for playing variants using the Zillions of Games proprietary software engine. The site also features The Game Courier software developed by Fergus Duniho which can be used to play almost any variant. There is also an extensive encyclopedia of fairy chess piece A fairy chess piece, variant chess piece, unorthodox chess piece, or heterodox chess piece is a chess piece not used in conventio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |