import { Cell } from './Cell';
import { CellCollection } from './CellCollection';
import { CellValueChange, GridBlocks, GridColumns, GridLocation, GridRows } from './ValueTypes';
/**
 * Defines an immutable grid structure of Sudoku cells.
 */
export declare class Grid extends CellCollection {
    /**
     * This helper function transforms a location (x 1 to 9, y 1 to 9) into the
     * corresponding GridBlock (1 - 9) representing one of the 9 sub-squares in the
     * Sudoku grid.
     * @param location The x y location to look up.
     * @returns The GridBlock that the location sits in.
     */
    static gridBlockFromLocation(location: GridLocation): GridBlocks;
    /**
     * Creates a new Grid object from a 9x9 array containing known values. Unknown values
     * should be set to zero.
     * @param values A 9x9 grid of numbers that gives the starting point for the grid.
     * @returns A Grid object containing the required Cells.
     */
    static fromGrid(values: number[][]): Grid;
    /**
     * Converts a raw CellCollection into a Grid.
     * @param cells The cell collection from which to create the Grid.
     * @returns A reference to the created Grid object.
     */
    static fromCellCollection(cells: CellCollection): Grid;
    /**
     * Instantiates a new Grid object.
     * @param values An array of 81 Cells
     */
    constructor(values: Cell[]);
    /**
     * Returns a copy of the data at a specified row.
     * @param row The row to return.
     * @returns A CellCollection containing a copy of the requested row.
     */
    row(row: GridRows): CellCollection;
    /**
     * Returns a copy of the data at a specified column.
     * @param column The column to return.
     * @returns A CellCollection containing a copy of the requested column.
     */
    column(column: GridColumns): CellCollection;
    /**
     * Returns a copy of the data at a specified column.
     * @param column The column to return.
     * @returns A CellCollection containing a copy of the requested column.
     */
    block(block: GridBlocks): CellCollection;
    /**
     * Returns a value indicating whether the puzzle is completely solved or not.
     * @returns True if the puzzle is solved or false if it isn't.
     */
    get isSolved(): boolean;
    /**
     * returns a list of values that apply what's in this grid to what's in the grid parameter.
     * @param targetGrid The grid to compare it to.
     * @returns A list of values and their locations that differ between the Grids.
     */
    differences(targetGrid: Grid): CellValueChange[];
    /**
     * Converts the values in this Grid to a 2D array of numbers.
     * @returns The Grid as a 2D array of numbers.
     */
    toPuzzleArray(): number[][];
}