14. Sharpen the Brain

123456789101112
Across
  1. 3. Secret writing code
  2. 5. Cell of the brain
  3. 7. Question with a twist
  4. 8. Challenge to solve
  5. 9. Solution to a problem
  6. 11. Ability to recall
  7. 12. System of reasoning
Down
  1. 1. Repeated arrangement
  2. 2. Center of attention
  3. 3. Clearness of thought
  4. 4. Hard to understand
  5. 6. Basis for judgment
  6. 10. Plan of action