public MatchModel(ushort id, ushort currentPlayerClientID)
{
Id = id;
CurrentPlayerClientID = currentPlayerClientID;
slates = new SlateStatus[9];
OnBoardChange = new BoardChangeEvent();
}
private bool BacktrackingContinue(Board board)
{
bool isComplete;
try
{
isComplete = board.IsComplete();
}
catch (Exception)
{
return(false);
}
if (isComplete)
{
return(true);
}
for (var i = 0; i < _cells.Length; i++)
{
if (board[i].Digit == 0)
{
var posDigit = board[i].Candidates;
foreach (var x in posDigit)
{
var newBoard = (Board)board.Clone();
var result = newBoard.SetDigit(i, x, true);
newBoard[i].IsGiven = false;
BoardChangeEvent?.Invoke(newBoard, new SudokuEvent {
Action = CellAction.SetDigitInt, ChangedCellBase = newBoard[i]
});
if (!result.Successful)
{
continue;
}
try
{
isComplete = newBoard.IsComplete();
}
catch (Exception)
{
return(false);
}
if (isComplete)
{
for (var s = 0; s < _cells.Length; s++)
{
_cells[s]._candidateValueInternal = 0;
_cells[s]._digit = newBoard._cells[s].Digit;
}
return(true);
}
if (BacktrackingContinue(newBoard))
{
return(true);
}
}
return(false);
}
}
return(false);
}