Sprite105

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApplication7
{
    class Class1
    {
        private int num = 0;
        private char[,] mas;

        public void func(int n) {

            num = n;
            mas = new char[n, num];
            board(mas);

        }

        private void board(char[,] mas) {
            
            Console.Write("   ");

            for (int i = 0; i < num; i++)
                if (i < 9) Console.Write(" " + (i + 1) + " "); else Console.Write(" " + (i + 1));

            Console.WriteLine("\n");

            for (int i = 0; i < num; i++) {

                if (i > 8) Console.Write(i + 1 + "  "); else Console.Write(" " + (i + 1) + "  ");

                for (int j = 0; j < num; j++) {

                    if ((((j + 1) + (i + 1)) % 2) == 0) Console.BackgroundColor = ConsoleColor.White;
                    else Console.BackgroundColor = ConsoleColor.Black;

                    Console.Write(mas[i, j] + "  "); Console.ResetColor();

                } Console.WriteLine();

            }

        }

    }
}