public string GetWinner()
{
var allPossibilities = getRowPossibilities()
.Union(getColumnPossibilities())
.Union(getCrossLinePossibilities());
const int MinimumRequiredCharacters = 3;
var winnerSpot = allPossibilities
.Where(it => it.Length == MinimumRequiredCharacters)
.FirstOrDefault(it => it.All(c => c == it.First()));
var winnerSymbol = winnerSpot?.First().ToString();
const string XSymbol = "X";
const string OSymbol = "O";
if (winnerSymbol == XSymbol)
{
XScore++;
}
else if (winnerSymbol == OSymbol)
{
OScore++;
}
else
{
var anyEmptySpace = Slots.Cast <string>().Any(it => it == null);
IsDraw = !anyEmptySpace;
}
return(winnerSymbol);
}
public bool Place(string symbol, int row, int column)
{
Slots[row, column] = symbol;
var isEvenNumber = Slots.Cast <string>().Count(it => it != null) % 2 == 0;
CurrentTurn = isEvenNumber ? "X" : "O";
return(true);
}