Описание книги
More info Book of Alexander Igorevich Monvizh-Montvid «What are the codes?» talks about how, over the centuries, generals, pirates, detectives and spies left secret messages. They could use invisible ink or cipher in the form of dancing men, as in the story about Sherlock Holmes, use a newspaper sheet or a Cardano grid … There are a lot of encryption methods and they are all interesting! Having recognized them, you will be able to compose secret messages yourself, as well as puzzle over the messages of your friends. For primary school age. …
FAQ