Select a puzzle among nine different set-up. Click New to generate a new puzzle. (It may take up to ten minutes to build a new puzzle). Then, click on question number to see the question. Write your answer in the required area and press enter and OK to place your answer in the puzzle. Once you finish entering your answers, check your correct answers by clicking "Mistakes" button. You can also see the full correct answers by clicking "Solution" button. Good luck.