11. You know the feedback, whether you're solving the puzzles or not. 12. In order to solve these puzzles effectively, 13. Use the tips to solve a puzzle. 14. Can miss a vital piece of the puzzle 15. In terms of the number of puzzles solved, 16. Because we want these puzzles to be difficult. 17. Problems become puzzles 18. If you answer a puzzle incorrectly, you will not get any score for it. 19. For the pieces of the puzzle basically. 20. But he wore a puzzled expression .
