How to Solve Codes
Many puzzles, either stand-alone or as part of a larger puzzlehunt, use codes of some sort to conceal an answer. There are countless ways of encoding a final solution and trying to keep track of all of them is not so easy. To aid you in your quest to uncover those elusive solutions, we have put together a comprehensive compendium of various encoding schemes.
It might not always be apparent what sort of code you should use. While trial and error is always an option, you might also consider examining other features of the puzzle. Perhaps there are some clues with odd wording or maybe the title doubles as a hint. Other times there is an indication in what is known as the flavor text of a puzzle. The flavor text is often a short blurb that accompanies a puzzle and while it may look like a normal introduction or description, there may be a carefully veiled hint hidden inside. Here's an example: "Don't feel bad if you can't see the answer right away; we are confident that with the right touch, you will navigate the bumps in the road and arrive at the solution." Although it reads like a normal sentence, the words "feel," "can't see," "touch," and "bumps" might indicate that Braille might play a key role in unraveling the solution. While no list will ever be definitive, below are some of the most common words and phrases used to hint at particular codes.
The alphabet is, of course, a major component of many puzzles. While everyone knows the order of the 26 letters, most people cannot immediately recall that Q is the 17th letter. The position of a letter in the alphabet is always helpful but you might also need to know the corresponding letter in a reversed alphabet.
ASCII stands for the American Standard Code for Information Interchange. This encoding scheme is used to represent text for communication between computers and any other digital device. It translates the 95 printable characters (alphabet, punctuation, symbols) into hexadecimal, decimal, and binary. Using one of these three notations eliminates ambiguity and allows for messages to be transmitted more easily across a variety of platforms.
Astronomy is the study of celestial bodies including planets, moons, stars, and asteroids. The table below collects information about the most well-known of these space objects. We have included the commonly accepted calculations for volume, mass, diameter, and distance from the sun, as well as the astrological symbol.
After going blind in a childhood accident, Frenchman Louis Braille developed the first version of his writing system in 1824. Braille consists of variations of a 2x3 grid of dots, where the pattern of raised and unraised bumps determines the character or letter. By feeling each character with ones finger, it is possible to read messages tactilely instead of visually. The following images show the Braille representations for each letter of the alphabet. The first ten can also signify the 10 different numerals when used in conjunction with the the Braille character for 'number' (see the table below.) For example, 'number' followed by the Braille character for A will indicate a 1.
Braille can be used to depict not only the 26 letters of the alphabet but also common letter combinations, frequently seen words, and punctuation. The table below lists all of the 64 unique configurations of a 2x3 grid. To read this table, combine one of the 7 possible configurations on the far left column with one of the 7 possible configurations in the top row.
The Greek alphabet is one the oldest forms of writing and has been in use since the 8th century BC. It originally derived from the 22 letters of the ancient Phoenician language, and over time has evolved into the modern day set of 24 letters and associated symbols. While certainly used as the primary communication method throughout Greece, the Greek alphabet has a much broader reach. The names and symbols appear in mathematics, physics, and various other sciences, as well as in names of fraternities and sororities.
While the metric system allows for easy and quick conversions, the Imperial system unfortunately does not. It's fairly simple to switch between liters and milliliters but not too many people remember how to convert between ounces and gallons The table below shows the major imperial units and the odd relationships they share.
Morse code was invented by Samuel Morse in the 1830s as a mode of communicating through telegraphy. It was used extensively with early radio communication and was crucial during World War II. Each letter or number is represented by a unique sequence of dashes and dots where a dash is three times as long as a dot. When sending a message via telegraph, a short pause equal to the duration of a dot is inserted after each dot or dash for clarity. Complete words, on the other hand, are separated by a longer pause which is equal to the duration of three dots (the equivalent of one dash.) The first table shows the corresponding sequence for each letter and number in order.
The various sequences of dots and dashes were determined based on letter frequency where the most frequent letters were assigned the shortest sequence. Thus the most common letter, E, is represented by the shortest sequence, one dot. This second table contains the same information as the first table, except that here the Morse code sequences are ordered from shortest to longest.
Written music uses clefs to indicate the pitch of the notes on the staff. The two most common clefs are shown below: the Treble Clef (or G-clef), top, and the Bass Clef (or F-clef), bottom. If the clef symbol is shown in a different position on the staff, you can tell the pitch of the notes by the position of the symbol. With a Treble clef, the G4 note line passes through the curl of the clef; with a Bass clef, the F3 note line passes between the two dots of the clef.
The piano keys below show all of the notes in one octave, the interval between a musical pitch and another with half or double its frequency. There are 7 white keys which correspond to the notes A through G and 5 black keys which correspond to intermediate notes that are either lowered (flat) or raised (sharp) by a half step. Each of the notes is also labeled with its corresponding name on the.
The colorful flags below are known as the international maritime signal flags. They correspond directly with the NATO alphabet and can be used to spell a message letter by letter. As well as representing an individual letter, each flag also has a. For instance, the yellow and red flag for O also means "Man overboard."
The Pigpen cipher is one of the oldest codes but also one of the most well known. It dates back to the 18th century and is associated with groups such as the Rosicrucian brotherhood and the Freemasons. Originally used to conceal message and keep records secret, it is now a common device used in various puzzles and was even featured in Dan Brown's popular novel The Lost Symbol. The geometric grids produce a simple substitution method for the letters of the alphabet. Note how the dots eliminate ambiguities between the grids - for example, A and J use the same grid shape but can be distinguished from each other with the dot. Although there are many variations of the grids and letter placements, below you will find the most common version of the Pigpen cipher.
Here is an example of how to decode a message using the Pigpen cipher. Match each image with the corresponding section in one of the grids and you will spell out the answer letter by letter. In this case, the answer is ANSWER.
Used primarily for maritime purposes, semaphore is a way of visually conveying messages from a distance. As you look through the semaphore notation for each letter, imagine a naval flagman standing on the deck of a distant ship using his arms to spell out a message letter by letter. You might consider using semaphore when a puzzle involves or makes references to time or clocks, as the clock hands mimic the flag positions. Really any sort of visual representation with angles (in multiples of 45 degrees) might be a good indication that you should use semaphore.
The table below shows another way of displaying the various semaphore symbols. Match up an angle in the leftmost column with an angle in the top row to form one of the 49 possible combinations. Note that not all combinations produce a valid symbol.
Yet another way of interpreting semaphore symbols can be seen below. Each image depicts all letters that can be formed from a certain set of congruent angles. From left to right, they show the letters that can be formed with 45-, 90-, 180- and 135-degree angles.
American Sign Language
American Sign Language, or ASL, is a way of communicating using the hands and other parts of the body to express various letters, words or concepts. ASL is the primary mode of communication among deaf communities and is considered a natural language with its own syntax and grammar. Many words have a specific sign but it is sometimes necessary to spell out a word letter by letter. The images below depict each letter of the alphabet as well as the first 10 numbers.
The United States
The fifty states have a long and storied history and collectively they form the United States of America. From Alabama to Wyoming, each state has its own climate, culture, and quirks. Here we present the basic facts including, postal codes, capitals, nicknames, and information about when each state joined the Union.
Flags of the States
These two alphabets consist of certain code words assigned to each letter of the alphabet. These words were chosen deliberately so as to provide clarity when transmitting strings of letters. Since the pronunciations of many letters often sound too similar, using the distinct words in these alphabets helps eliminate any confusion.
The term Zodiac has roots in Latin and Greek words meaning "circle of animals" and most of the signs are indeed represented by animals. The 12 signs of the Zodiac correspond to the Sun's path over the course of a full year. Each day of the year falls under one of the 12 signs, each of which has its own significance and associated meanings. The pertinent information has been collected here in this table.
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