public override string ToString()
{
var builder = new StringBuilder();
for (var y = SideLength - 1; y >= 0; y--)
{
for (var x = 0; x < SideLength; x++)
{
builder.Append(field[x, y].ToString().Substring(0, 1));
}
builder.AppendLine();
}
return builder.ToString();
}
}