Chapter 17
Menus and Grids
Penguin Pairs is a puzzle game, and often, board games and puzzle games are based on placing objects in some kind of grid. There are many examples of such games: Chess, Tetris, Tic-Tac-Toe, Sudoku, Candy Crush, and many more. Often the goal in these games is to modify the configuration of the grid in some way to achieve points. In Tetris, completely filled rows have to be constructed; and in Sudoku, numerical properties must hold for rows, columns, and subgrids.
Structures such as grids often impose a set of rules that binds the playing pieces to certain positions or configurations on the playing board. For example, in a chess game, the pieces can only be placed (meaningfully) on the white and black squares on the ...
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