/**
 * Solves Sudoku puzzles. The first entry of the returned array is *false* if the Sudoku puzzle is not solvable.
 * @param sudoku Sudoku puzzle to solve
 * @returns solved Sudoku puzzle. The first entry of the returned array is *false* if the Sudoku puzzle is not solvable.
 */
export declare function solveSudokuPuzzle(sudoku: number[][]): [solvable: boolean, solution: number[][]];