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Chess is an abstract strategy game that involves no hidden information and no elements of chance. It is played on a chessboard with 64 squares arranged in an 8×8 grid. The players, referred to generically as "White" and "Black", each control sixteen pieces: one king, one queen, two rooks, two bishops, two knights, and eight pawns. White moves ...
(It would still be drawn by perpetual check with the queen on f1 through f4, but it is won with the queen on f5 by the plan of getting the White king to h6, which no longer causes stalemate.) [15] Finally, diagram 3 has the defending king immobilised in the corner by the enemy queen a knight's move away, so the rook may give perpetual check ...
A queen wins against a lone rook, unless there is an immediate draw by stalemate or due to perpetual check [3] (or if the rook or king can immediately capture the queen). In 1895, Edward Freeborough edited an entire 130-page book of analysis of this endgame, titled The Chess Ending, King & Queen against King & Rook.
The queen is used to keep the king in front of its pawn. The queen is used to prevent the white queen from becoming active. If the queen is on e5 it will draw against a pawn on h7 and queen on g6 or f7 if the black king is in the far corner. The queen is kept active and in a flexible place. It will be more active on c2 than h7.
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A chess engine generates moves, but is accessed via a command-line interface with no graphics. A dedicated chess computer has been purpose built solely to play chess. A graphical user interface (GUI) allows one to import and load an engine, and play against it. A chess database allows one to import, edit, and analyze a large archive of past games.
The presence of open or half-open king (e-) and queen's bishop (c-) files, however, as well as the outposts (for White) at e5 and c5, enable the player with the IQP favourable attacking chances in the middlegame. Once the game reaches the endgame, the pawn's isolation becomes more of a weakness than a strength.