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Because it has only four pieces, queen versus rook was one of the first endings to be solved by endgame tablebases. [1] Just after the ending was fully analysed by computers, a challenge was issued to Grandmaster Walter Browne in 1978, where Browne would have the queen in a difficult position, defended by Belle using the queen versus rook ...
An independence problem (or unguard [2]) is a problem in which, given a certain type of chess piece (queen, rook, bishop, knight or king), one must find the maximum number that can be placed on a chessboard so that none of the pieces attack each other. It is also required that an actual arrangement for this maximum number of pieces be found.
A rook moves any number of vacant squares horizontally or vertically. It also is moved when castling. A bishop moves any number of vacant squares diagonally. (Thus a bishop can move to only light or dark squares, not both.) The queen moves any number of vacant squares horizontally, vertically, or diagonally.
The rules of chess prescribe the moves each type of chess piece can make. During play, the players take turns moving their own chess pieces. The rook may move any number of squares vertically or horizontally without jumping. It also takes part, along with the king, in castling. The bishop may move any number of squares diagonally without ...
The triangle mate involves a queen, supported by a rook on the same file two squares away, delivering checkmate to a king that is either at the edge of the board or whose escape is blocked by a piece; the queen, rook, and king together form a triangular shape, hence the name of the mating pattern.
In chess, a back-rank checkmate (also known as a corridor mate) is a checkmate delivered by a rook or queen along the opponent's back rank (that is, the row closest to them) in which the mated king is unable to move up the board because the king is blocked by friendly pieces (usually pawns) on the second rank.
It served to combine the rook's move and the king's jumping move into a single move. [16] In Rome, from the early 17th century until the late 19th century, the rook might be placed on any square up to and including the king's square, and the king might be moved to any square on the other side of the rook. This was called free castling.
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 ...