Jumbo Challenge Sudoku for Teens Vol 1

A big volume of 300 puzzles and answers for the advanced teen player. Sudoku trains the brain in logic and problem-solving. Fun puzzles to relieve anxiety, aid stress relief. Playing puzzle games helps with feeling calm. These puzzles are harder than medium or easy. Great gifts for birthdays, Valentine's Day, Easter, Christmas, stocking stuffers, secret Santa, party favors. Great gifts for girls who play Sudoku. Great gifts for boys who play Sudoku. Have loads of fun and hours of entertainment playing puzzle books.