Sea Battle Solitaire is a logic puzzle for the Palm OS, in which you are challenged to deduce the hidden navy deployment.

Instructions

• The objective is to determine your enemy's navy deployment.
• a navy consists of
  • 1x Battleship of length 4,
  • 2x Cruiser of length 3,
  • 3x Destroyer of length 2,
  • 4x Submarine of length 1.
• Ships are arranged horizontally or vertically on the board.
• No two ships have squares which are adjacent to other ships, not even diagonally.
• Each line (either row or column) has two numbers placed after it. You can see these numbers down the right hand side, and along the bottom, of the board.
• The first number, in black, is the number of occupied squares in this line.
• The second number, in red or blue ( or grey ), is the number of occupied squares remaining to be found in that line.
• The red number turns to a blue zero when it's line is complete.
• Tap a square to cycle it between being unknown, sea or ship.
• On the right you will see a tally of the ships, which will be automatically crossed off as they are found.
• Good luck.