National Puzzle Day!

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Across
  1. 3. What type of puzzle involves finding hidden words in a grid of letters?
  2. 5. In Sudoku, what is the standard size of the grid?
  3. 6. In crossword puzzles, what is the name for a two-word phrase where the second word is often a play on the first?
  4. 7. What type of puzzle involves deciphering a message encoded with a substitution cipher?
  5. 9. Which classic board game involves moving colored pegs to solve a code?
  6. 11. What logic puzzle involves filling a grid with numbers so that each row, column, and subgrid contains all of the digits from 1 to 9?
Down
  1. 1. What type of puzzle involves finding a path through a maze?
  2. 2. What type of puzzle is a set of interlocking pieces that need to be put together to create an image?
  3. 4. What puzzle game involves connecting dots to create a picture?
  4. 8. What 3D combination puzzle was invented by Ernő Rubik in 1974
  5. 10. What word describes a puzzle where you rearrange letters to form another word?