Appendix F — Glossary

One word for each idea, used the same way everywhere in the game and in this book.

Backdrop (Panel Backdrop): The see-through dark sheet laid over the whole game while the Promotion choice or a panel is open; it takes the clicks meant for what lies under it, so only the panel answers.
Board: The 8 x 8 playing surface.
Board Finish: One of the four looks for the Board.
Capture: A Move that takes an enemy Piece.
Castling, En Passant: As in the rules of chess.
Check / Checkmate / Stalemate / Draw: As in the rules of chess.
Computer: The opponent the game plays for the other Side.
File: A column of squares, a to h.
Hint: A Move the game suggests to the Player.
Inspect, Inspected Piece: In Threats mode, a Piece of either Side the Player clicks to look at what it attacks and what attacks it, without selecting it for a Move; marked teal.
Kind: Which of the six a Piece is (King, Queen, …).
Label (Rank Label, File Label): The Rank number or File letter written in the corner of a Square on the left or bottom edge of the Board.
Legal Move: A Move the rules allow, which never leaves the mover’s own King in Check.
Move: One Piece going from one Square to another (including a capture, castling, en passant, promotion).
Moving Piece: The Object that shows a Piece while it slides.
Option: One choice on a panel: on the New Game panel a Side or a Strength; on the Settings panel a Strength, a Board Finish, or a Piece Set.
Piece: One King, Queen, Rook, Bishop, Knight, or Pawn on the Board.
Piece Set: One of the three looks for the Pieces.
Player: The person playing.
Promotion: A Pawn reaching the last Rank becomes a Queen, Rook, Bishop, or Knight.
Promotion Focus: The outline the arrow keys move over the Promotion choice’s Pieces, starting on the Queen; Enter or Space promotes to the Piece it is on.
Rank: A row of squares, 1 to 8.
Side: White or Black: who owns a Piece and whose turn it is.
Slide: The Computer’s Move drawn as its Piece gliding from its Square to the new one before the Move is made.
Square: One of the 64 cells, named a1 to h8.
Strength: How well the Computer plays (Gentle to Expert).
Threat: An enemy Piece attacking one of yours (shown in Threats mode).
Turn: One Side’s chance to make a Move.