private static IEnumerable<BobDecisionTree> AllDecisionsFromHere(BoardState board, BoardMark whosTurn, int decisionsCount)
{
IEnumerable<int> positions2Go = new BoardSymmetry(board).GetFreeUniquePositions();
if (CanOptimizeTreeBuilding(decisionsCount, positions2Go))
{
positions2Go = positions2Go.AsParallel();
}
return positions2Go
.Select(p => new { NewBoard = board.Set(p, whosTurn), Position = p })
.Select(p => new BobDecisionTree(p.NewBoard, whosTurn.OpponentsMark(), p.Position, decisionsCount + 1))
.ToArray();
}
public double GetWinFactor(BoardMark whosTurn)
{
return WinForecast(whosTurn, 0) - WinForecast(whosTurn.OpponentsMark(), 1);
}
