6

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Across
  1. 3. – Most common format with black squares separating answers.
  2. 8. – Answers are clued and arranged alphabetically, not numerically.
  3. 9. – Clues where words are removed from a sentence.
  4. 10. – Clues/answers that use symbols or multiple letters in one square.
Down
  1. 1. – Grid that uses thick bars instead of black squares.
  2. 2. – A subtle or hidden theme not revealed directly.
  3. 4. – A puzzle where answers radiate from a center.
  4. 5. – Grid is blank; answers must be placed without clue numbers.
  5. 6. – A hidden word or message embedded in the grid (often unnoticed).
  6. 7. – Clue based on a letter-substitution system or code.