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34 have the attack. Defensive measures are those taken to provide against or to repel attack. To defend a Piece or Pawn is to protect or support it from or against an adversary.

Develop. To develop a Piece or Pawn is to bring it from the comparatively powerless and inactive position which it occupies at the beginning of the game to a position which is more favorable for defence or attack. To develop a game is to bring all or nearly all of the Pieces and Pawns into positions of defence or attack.

Development. The early positions of the forces for defence or attack. In a good or strong development, the forces cooperate without much obstruction. In a bad or weak development, there is needless obstruction and lack of co-operation which frequently leads to a permanent disadvantage. Discovered Check. An attack opened upon the King by the removal of an intervening Piece or Pawn. For example: If the Black King occupies KKt7, the White