Strimko is a web-based logical puzzle game which brings a new twist on the classic Latin Squares concept which is described by the popular Swiss mathematician Leonhard Euler (1707 - 1783). You have to keep in mind that each row, column and stream (connected groups of circles) must include only unique numbers that ranging from 1 through to the puzzle dimension. Challenge yourself in 120 hand-crafted puzzles along with 20 available to unlock puzzles and 4 difficulty levels: Easy, Medium, Hard and Master. Every puzzle is solved through a unique solution. This 20 hours of gameplay contains additional puzzle packs and OpenFeint integration for achievements, friends & forums/chat.