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- B look up translate image
- Abbreviation for Bishop.
- BABSON TASK look up translate image
- A problem in which black promotion defences to all possible pieces are answered by white promotions to the same piece black has promoted to. An extreme form of Allumwandlung.
- BACK RANK look up translate image
- The first rank on the board for each player. It can become weak late in the game if the rooks don't cover it enough.
- BACK RANK MATE look up translate image
- A checkmate made by a Queen or Rook along the 8th rank where the opponent's King is blocked in by its own Pawns.
- BACKWARD PAWN look up translate image
- A Pawn that has trailed behind and is no longer supported by other Pawns. A backward Pawn is consider a fundamental weakness in a Chess position because it can be attacked. Its defense requires pieces that are better employed in other plans. See also isolated Pawn.
1. A pawn at the base of a pawn chain that can't move forward due to one or more enemy pawns on the adjacent files. 2. A pawn which stands on an open file and cannot be protected by any other pawn.
- BAD BISHOP look up translate image
- Any ineffective Bishop. When a Bishop has little or no mobility because of being hemmed by Pawns positioned on squares of the same color as the Bishop's square, it is said to be a "bad Bishop".
A bishop whose movement is restricted by friendly pawns on its colour squares. These friendly pawns are in turn restricted by enemy pawns or pieces, thereby being unable to vacate squares for the bishop.
- BASE OF PAWN CHAIN look up translate image
- The very last pawn in a diagonal chain. It is the weakest point due to it not being supported by another pawn.
- BATTERY look up translate image
- Doubling Rooks on a file or a Queen and a Bishop on a diagonal.
A lineup of pieces that move similarly on a single file or diagonal, usually pointing toward a critical point in the enemy's camp. Batteries can be created by Queen and Rooks on a file or rank, and Queen and Bishops on a diagonal.
- BCE look up translate image
- Basic Chess Endings.
- BCF look up translate image
- British Chess Federation.
- BCO look up translate image
- Batsford Chess Openings, the standard one volume reference book on opening strategy.
- BERSERKER look up translate image
- A rash playing style characterized by frenzied attacking with one or two pieces, perhaps with little regard for strategy or danger.
- BIND look up translate image
- Where a player is so tied up he has trouble finding useful moves. See "Squeeze".
- BISHOP PAIR look up translate image
- Two Bishops vs. a Bishop and a Knight or two Knights. If both Bishops on the same side have survived late into a game of Chess, then their value is enhanced for two reasons. Together they can attack a piece on any color square. Their mobility is usually less restricted by Pawns late in the game. Therefore, a Bishop pair is a notable advantage.
Two bishops against a bishop and knight or two knights. Two bishops are effective together because they control diagonals of both colours, and work very well in open positions. See "Opposite colour bishops".
- BLINDFOLD CHESS look up translate image
- Games played without seeing the board. A Chess player who plays one or more opponents without sight of the board.
- BLITZ CHESS look up translate image
- Rapid or lightning Chess games usually clocked in five or ten minutes.
- BLOCK look up translate image
- A problem in which the key provides no threat, but instead puts black in a position of zugzwang, where every move leads to a mate. In a complete block, all of black's moves have mates provided in the set play and the key is simply a waiting move; in an incomplete block, not all black moves are provided with mates in the set play - the key provides for those that don't; in a mutate some of the mates provided in the set play are changed following the key.
- BLOCKADE look up translate image
- To stop an enemy Pawn by placing a piece or pieces directly in front of it. This term describes the situation where the advance of a Pawn is prevented by an opponent's piece directly in front of the frustrated Pawn.
Immobilization of an enemy pawn by placing a piece (preferably a knight) on the square directly in front of it.
- BLOCKADING SQUARE look up translate image
- The square directly in front of an isolated or backward pawn. This square can also serve as an outpost square, as an occupying piece cannot be chased away by pawns.
- BLOCKED look up translate image
- This term describes a piece whose mobility is limited by the physical presence of another piece often of the same color. Specific positions that involve blocked pieces include discovered check, double check, and blockade.
- BLUNDER look up translate image
- A very bad move that loses material or initiative without any or little advantage. A mistake that overlooks a simple tactical response.
A horrible mistake where material is lost, serious tactical or positional concessions are made, or the game is lost.
- BOOK look up translate image
- The written body of high-level chess play. "Book" moves are standard. A book player memorizes openings and their variations, and goes to pieces if his opponent strays from the accepted line.
1. Published opening theory. 2. The library of opening moves maintained by a computer chess playing program.
- BOOK (MOVES) look up translate image
- A pattern of moves expected to be played based on theoretical manuals by Chess players.
- BOOK PLAYER look up translate image
- A person who memorizes opening theory. Taking someone "out of book" refers to avoiding theory and playing a new or unorthodox move, which may confuse a book player.
- BREAK look up translate image
- A pawn move that proposes a pawn trade in order to increase space or relieve a cramped position.
- BREAKTHROUGH look up translate image
- An infiltration to the opponent's position.
Penetrating the enemy's position, whether by a pawn break or the sacrifice of pieces or pawns.
- BRILLIANCY look up translate image
- A game containing a very deep strategic idea, a beautiful combination, or an original idea or plan.
- BROAD PAWN CENTRE look up translate image
- Three or four centre pawns abreast, which indicate very aggressive intentions. The opponent of such a "big centre" must look to restrain it and break it up.
- BURIED PIECE look up translate image
- A piece hemmed in by friendly pieces and pawns. Such a piece will have a difficult time actively participating, and may also interfere with the development of other pieces.
- BY-PLAY look up translate image
- Variations not directly connected to the problem's theme.
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