How to play:

• The hint numbers on each row and column tell you how many squares you need to fill in for that row or column.
• If a hint said '5', you would need to fill in all 5 of the squares like 'OOOOO' (where 'O' is filled, 'x' is not filled).
• If a hint said '2 2', you would need to fill 2 squares, then leave at least 1 blank space, then fill in another 2 squares. This would look like 'OOxOO'
• Some hints like '2 1' have multiple solutions: 'OOxOx', 'OOxxO', or 'xOOxO'. These ones require that you have found some other information about the board before fully filling that row in.
  • Notice that it is safe to fill in the second square with the hint '2 1' since it will be filled no matter which of the 3 possibilities is the correct one.
• The key to success is marking which squares to avoid filling in when you can (by right-clicking).
  • For example, if a row had the hint '1 1' and was filled like 'O????'(where '?' means you aren't sure if it should be an 'O' or 'x'), you could change this to 'Ox???' because the second square cannot possibly be filled as this would violate the first hint number which is a 1.

How to win:

• Once you have filled in the 'O' squares such that every row and column has its conditions satisfied, the board will change colors to indicate that you have won. Click "New Game" to start a new game.
• You may occasionally have a puzzle with multiple solutions. Any valid solution will be marked as correct.

Controls:

• Left-click a square to fill it in. Left-click the square to reset it.
• Right-click a square to mark that it should not be filled in. Right-click the square to reset it.
• Click "New Game" to start a new game.
• Click "Restart" to clear the current board so you can try again.
• Click the "Show Example Puzzle" button to abandon the current game and show an example of a solved puzzle.
  • If you have never played before, it is recommended that you do this to get a better feel for how the hint numbers and squares work together.