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Quality: The quality is the difference of value between a Rook and a minor piece. Thus the quality is appraised at 5 (value of a Rook) - 3 (value of a Minor Piece) = 2 (Chess Pieces - CCT II - "Moving figures"). A Quality Sacrifice results of the exchange between a Rook of a camp and a minor piece of the other. Being given that a Rook is worth a minor piece plus two pawns, one can still speak about sacrifice of quality in the event of exchange of a Rook against a minor piece plus a pawn. The Quality sacrifice is a frequent theme in a chess game. Also, it is interesting and instructive to study with precision its consequences, as we will have many occasions to make it on this site. (Chess Terminology - NCT VI - "Chess move classification"). White (Black) Wins the Quality: White (Black) succeeds in exchanging a minor piece against an enemy Rook. The only problem is that minor pieces are active whereas Rooks are not yet able to intervene. For this reason, the exchange can thus appear unfavourable, in particular at the beginning of the middle game (Chess Terminology). Queen: The strongest piece on the chessboard. She can move either like a Rook or like a Bishop. The Queen can move freely, in straight line; this means along ranks, files or diagonals. She can move as far as she wants, in any direction, until she encounters another piece. The Queen is so powerful that she is weakly sensitive to «sides and corners effect». (Chess Pieces - CCT II - "Moving figures"). Chess Queen:
«Epilogue Fantasi and Sci-fi at The Queenside is the wing of the board constituted by files a, b, c (Chess Terminology - NCT II - "Chessboard geometry"). Queen Battle: The battle opposing directly both Queens during a Chess Game. It is an usual theme in a Chess game. Most frequently this fight occurs in the Deep Middle Game (DEMG:), extends during some moves and finishes with the exchange of Queens. More accurately the Queen Battle may take the following forms: You will find an example of Queen battle in the game: 
Kluger, Gyula - Tal, Mihail [A43-r4*] Kislovodsk, 1964 -
Chess-Theory Analyzed Game No 059
(Current & New Chess Theory). A White (Black) Active Queen is easily recognizable and we will give many examples (Current Chess Theory). A White (Black) Passive Queen is easily recognizable and we will give many examples (Current Chess Theory). Queen Against Rooks: This situation arises when the only heavy pieces on the chessboard are the Queen on a side and both Rooks for the opponent. It is interesting to compare the mobility of the Queen, on one side, and the power of both Rooks, on the other, able to control two times a square You will find an example, of the Queen against both Rooks, a new time in the game:
Kluger, Gyula - Tal, Mihail [A43-r4*] Kislovodsk, 1964 -
Chess-Theory Analyzed Game No 059 After: 33... Rxe1+ (Current Chess Theory - Chess-Theory Analysis). The confrontation of the Queen Against Three Pieces is very fascinating, because the outcome is rather uncertain. We have to differentiate two case: The first case is rather defavorable to the Queen's side and the second favorable. Anyway, to appreciate accurately such a situation it is necessary to integrate other elements such as: (Current Chess Theory - Chess-Theory Analysis). Queen Exchange: The exchange of both Queens may be observed in the majority of Chess games (Current Chess Theory - Chess-Theory Analysis). Queen Exchange Declined: During a Queen battle, the strongest camp, that which has the initiative and whose the Queen is most active, can have interest to refuse the exchange of Queens (Current Chess Theory - Chess-Theory Analysis). A Queen Sacrifice is the most fascinating sacrifice it is possible to imagine on the chessboard. Undoubtedly it is rarer than others, but brilliant examples do not miss. In this particular sacrifice like in other ones, we have to think to the following rules: Some Queen Sacrifices will be studied in forthcoming chapters of our lecture, in Chess-Theory analysed games, as well as in other parts of this site. (Classical Chess Theory - NCT VI - "Chess move classification"). Queen Bishop: The Bishop that was on the queenside at the start of the game. The terms Queen Knight and Queen Rook are also used (Chess Terminology - see: Wikipedia, the free encyclopedia). Queening: The promotion of a pawn in a Queen. It is the most usual case and the opposite compared to the underpromotion (Chess Rule - Chess Terminology). Queening square: The square on the eighth rank on which a pawn may be promoted (Chess Terminology - see: IBM - www.research.ibm.com/ - Chess Glossary). Quiet Move: A move that neither captures anything, checks, or directly attacks an enemy piece (Chess Terminology - see: ARK Angles - Great Australian Software). Chess Quote: A quote related to Chess. As a good example, Revolutionary Chess Quote of the Day: "Until we all start raging against the machine, the machine will continue to beat us at chess." - Ethan Allen Hawley ...
Boylston Chess Club Weblog - Blogspot.com
(Chess Practice). Mihael Tal Quote:
«Mihael Tal Quote (Chess Practice Today - Chess Quote - Chess Passion).
The
Chess-Theory Glossary is presented on 25 pages.
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