import { CellCollection } from '../CellCollection';
import { Grid } from '../Grid';
import { CellValueChange } from '../ValueTypes';
/**
 * Implements an pointing pairs solver strategy.
 * @see <a href="https://sudoku.org.uk/SolvingTechniques/IntersectionRemoval.asp">Sudoku.org.uk</a>
 */
export declare class PointingPairsSolver {
    /**
     * The name of the solver to insert into change information.
     */
    static source: string;
    /**
     * Searches the grid for instances of Pointing Pairs and if it finds any, returns an
     * array of changes to apply to the target grid.
     * @param targetGrid The grid to solve.
     * @returns An array of changes to apply to the grid to solve it.
     */
    static solve(targetGrid: Grid): CellValueChange[];
    /**
     * Solves for pointing pairs in the provided block and row.
     * @param blockCells The cells in the nonet block to check for candidates.
     * @param rowOrColumnCells The cells in the row or column to check for candidates.
     * @returns An array of CellValueChanges to apply to the grid.
     */
    static solveForBlockAndRow(blockCells: CellCollection, rowOrColumnCells: CellCollection): CellValueChange[];
}