Locate the fleet of ships in the grid using logic only. Three difficulty levels and two fleet sizes to choose from. If you are stuck, there is a handy hint option or the program will solve one cell for you with an explanation. This puzzle is also known as Battleship Solitaire.Yubotu is adapted from the popular online version that has been generating well crafted puzzles since 2007. This version contains all the functionality of the paid version but is limited to 60 puzzles.Yubotu does not require any internet access to play.