Inside Volume 2 of this all new 105 Number Fill In puzzle book, you will enjoy keeping your mind active and stimulated while having hours of challenging fun. The 105 Puzzles are presented in a variety of formats with 79 puzzles providing 1, 2, or 3-digit starter numbers (some sporadically arranged on the grids), and 26 puzzles have no starter clue. Using your power of logic to fill in number sets from the provided lists into the crossword-style puzzle grids also improves cognitive ability. These number fill-in puzzles are printed 1 puzzle per page (90 on 15x15 grids and 15 on 13x13 grids), in easy-to-read medium size (12-point) font. If you could use some additional numbers to get you going, you can always look at the Solutions in the back of this 8-1/2 x 11-inch number fill-in puzzle book.