Very useful application, which makes use of the abbreviated algebraic annotation to make annotations of matches in chess, replaces the paper sheet in tournaments, and has the advantage of converting the whole annotation into "pgn" file, and send the attached file by email and typed text, the match can also be printed directly from the body of the email. It has an anti-fraud system, which only allows the app to work on devices with airplane mode turned off, thus avoiding cheating and inconvenient sounds at the time of departure.