Who says sudoku covers have to be boring? I deny the nay-sayers (pun intended ) and present this Happy Horse Sudoku book for your enjoyment. This latest series out of the Fat Dog Publishing stable contains regular sudoku for adults and advanced kids, with a fun cover that hopefully brings a smile to your face and everyone who sees it. This edition contains 600 puzzles, 300 hard and 300 extra hard, to help take your playing to the next level. There are 4 puzzles per page and solutions at the end of the book. 8.5" x 11".