Search results
Results from the WOW.Com Content Network
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.
The key in the puzzle on the right is 1. Qd2. This move has no threat, but it leaves black in zugzwang: Black must either move one of his bishops or rooks, or move a pawn. However, any bishop or rook move must unguard one of the squares of d5, d6, d7 or d8, allowing White to mate on d5, d6 or d7 with the queen, and d8 with the knight. The lines ...
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 ...
The staircase maneuver (or staircase movement [1]) is a tactical motif that employs the idea of a series of checks, or alternation between pins and checks, to advance a queen, rook, or king along a diagonal via a series of stepped orthogonal moves.
In a few cases, the superior side gives up their rook in order to promote the pawn, resulting in a winning queen versus rook position (see Pawnless chess endgame § Queen versus rook). A rule of thumb (with exceptions) is: if the king on the side without the pawn can reach the queening square of the pawn, the game is a draw ; otherwise it is a ...
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 [her] [own] color", or "the dress [queen piece] matches the shoes [square]" (Latin: servat rēgīna colōrem).
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.
A king may not leave its 3×3 castle, but the other pieces are free to move unimpeded by castles or walls. The king can move and capture like a chess king or a chess knight. It can only capture pieces inside the 3×3 castle and cannot capture pieces on the wall. A rook moves like a rook in chess, and is unimpeded by castles or walls.