public void Solve()
{
IList <Cell> solvedCells = new List <Cell>();
foreach (var cell in UnsolvedCells)
{
var elements = Board.GetSudokuElementsAtCell(cell.X, cell.Y);
var cellSolution = SudokuElementSolution.GetUniqueCellSolution(elements);
if (cellSolution == SudokuElementSolution.INVALID_VALUE)
{
continue;
}
solvedCells.Add(cell);
Board.Cells[cell.X, cell.Y] = cellSolution;
SudokuElementSolution.RemovePossibility(elements, cellSolution);
}
if (!solvedCells.Any())
{
throw new Exception("Unsolvable sudoku: ran out of solutions");
}
UnsolvedCells = UnsolvedCells.Except(solvedCells).ToList();
if (UnsolvedCells.Any())
{
Solve();
}
}
internal void AssignGuess(CellWithSolutions cellWithLeastSolutions, int guess)
{
var cell = cellWithLeastSolutions.Cell;
var elements = Board.GetSudokuElements(cell.X, cell.Y);
SudokuElementSolution.RemovePossibility(elements, guess);
Board.CellsSolution[cell.X, cell.Y] = guess;
UnsolvedCells.Remove(cell);
}
public Game Clone()
{
var clonedGame = MemberwiseClone() as Game;
var clonedBoard = Board.Clone() as GameBoard;
clonedGame.Board = clonedBoard;
clonedGame.UnsolvedCells = UnsolvedCells.ToArray().CloneElementsDeep().ToList();
return(clonedGame);
}
public bool IsComplete()
{
return(!UnsolvedCells.Any());
}
internal bool IsComplete()
{
return(!UnsolvedCells.Any());
}
