Domain.Logic.Logic C# (CSharp) Method

        static Logic()
        {
            var horizontals =
                Enumerable.Range(0, Rule.BoardSize).Select(
                    y => Enumerable.Range(0, Rule.BoardSize).Select(
                        x => new PlacePosition(x, y)).ToArray());
            var verticals =
                Enumerable.Range(0, Rule.BoardSize).Select(
                    x => Enumerable.Range(0, Rule.BoardSize).Select(
                        y => new PlacePosition(x, y)).ToArray());
            var diagonals =
                Enumerable.Range(0, 2).Select(
                    t => Enumerable.Range(0, Rule.BoardSize).Select(
                        x => new PlacePosition(x, t == 0 ? x : Rule.BoardSize - 1 - x)).ToArray());
            RowPositions = horizontals.Concat(verticals).Concat(diagonals).ToArray();
        }