Seirawan chess
Encyclopedia
Seirawan chess is a chess variant
Chess variant
A chess variant is a game related to, derived from or inspired by chess. The difference from chess might include one or more of the following:...

 invented by grandmaster Yasser Seirawan in 2007. It is played on the standard 8x8 board and uses two new pieces, the hawk (which moves like a knight
Knight (chess)
The knight is a piece in the game of chess, representing a knight . It is normally represented by a horse's head and neck. Each player starts with two knights, which begin on the row closest to the player, one square from the corner...

 or a bishop
Bishop (chess)
A bishop is a piece in the board game of chess. Each player begins the game with two bishops. One starts between the king's knight and the king, the other between the queen's knight and the queen...

) and the elephant (which moves like a knight or a rook
Rook (chess)
A rook is a piece in the strategy board game of chess. Formerly the piece was called the castle, tower, marquess, rector, and comes...

). Yasser Seirawan has given simultaneous exhibition
Simultaneous exhibition
A simultaneous exhibition or simultaneous display is a board game exhibition in which one player plays multiple games at a time with a number of other players. Such an exhibition is often referred to simply as a "simul".In a regular simul, no chess clocks are used...

s for the game. The first ever event was a 12 board simultaneous exhibition held March 31, 2007 in Vancouver, Canada.

Rules

The initial position is that of standard chess
Chess
Chess is a two-player board game played on a chessboard, a square-checkered board with 64 squares arranged in an eight-by-eight grid. It is one of the world's most popular games, played by millions of people worldwide at home, in clubs, online, by correspondence, and in tournaments.Each player...

. Each side has additionally two pieces in hand (a hawk and an elephant):
  • The Elephant
    Fairy chess piece
    A fairy chess piece or unorthodox chess piece is a piece analogous to a chess piece. It is not used in conventional chess, but is used in certain chess variants and some chess problems...

    , moves as a rook
    Rook (chess)
    A rook is a piece in the strategy board game of chess. Formerly the piece was called the castle, tower, marquess, rector, and comes...

     or a knight
    Knight (chess)
    The knight is a piece in the game of chess, representing a knight . It is normally represented by a horse's head and neck. Each player starts with two knights, which begin on the row closest to the player, one square from the corner...

    ; and
  • The Hawk
    Fairy chess piece
    A fairy chess piece or unorthodox chess piece is a piece analogous to a chess piece. It is not used in conventional chess, but is used in certain chess variants and some chess problems...

    , moves as a bishop
    Bishop (chess)
    A bishop is a piece in the board game of chess. Each player begins the game with two bishops. One starts between the king's knight and the king, the other between the queen's knight and the queen...

     or a knight
    Knight (chess)
    The knight is a piece in the game of chess, representing a knight . It is normally represented by a horse's head and neck. Each player starts with two knights, which begin on the row closest to the player, one square from the corner...

    .


The elephant and the hawk are introduced to the game in the following way: whenever the player moves a piece
Chess piece
Chess pieces or chessmen are the pieces deployed on a chessboard to play the game of chess. The pieces vary in abilities, giving them different values in the game...

 (king, queen, knight, bishop or rook) from its starting position (that hasn't already been moved), one of the pieces in hand may be placed immediately on the square just vacated. One cannot use the placing of an elephant or hawk to block check. If the player moves all his pieces from the first rank without placing one or both in hand pieces, he forfeits the right to do so. After castling
Castling
Castling is a special move in the game of chess involving the king and either of the original rooks of the same color. It is the only move in chess in which a player moves two pieces at the same time. Castling consists of moving the king two squares towards a rook on the player's first rank, then...

, the player may put one of the pieces in hand on either the king's
King (chess)
In chess, the king is the most important piece. The object of the game is to trap the opponent's king so that its escape is not possible . If a player's king is threatened with capture, it is said to be in check, and the player must remove the threat of capture on the next move. If this cannot be...

 or the rook's square, but he may not place both pieces in hand in the same turn. Pawns may promote
Promotion (chess)
Promotion is a chess rule describing the transformation of a pawn that reaches its eighth rank into the player's choice of a queen, knight, rook, or bishop of the same color . The new piece replaces the pawn on the same square and is part of the move. Promotion is not limited to pieces that have...

 to a hawk or an elephant in this game (in addition to the normal chess piece
Chess piece
Chess pieces or chessmen are the pieces deployed on a chessboard to play the game of chess. The pieces vary in abilities, giving them different values in the game...

s).

When notating games in algebraic notation
Algebraic chess notation
Algebraic notation is a method for recording and describing the moves in a game of chess. It is now standard among all chess organizations and most books, magazines, and newspapers...

, the letter E is used for the Elephant and H for the Hawk. If the player places one of the two pieces on the board, it's written after a slash
Slash (punctuation)
The slash is a sign used as a punctuation mark and for various other purposes. It is now often called a forward slash , and many other alternative names.-History:...

. For example, 1. Nc3/Eb1 means that the player moved his knight from b1 to c3 and placed the elephant on b1 (see diagram).

Name

GM Seirawan has expressed dissatisfaction with the name Seirawan chess, noting that the variant was a joint development with friend Bruce Harper. The name SHARPER Chess (a combination of the names Seirawan and Harper) has been suggested.

External links

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