Like the familiar number version, the rules for solving these puzzles are simple: put one -- and only one -- whole, half, quarter and eighth note, and one whole and half rest in each row, column, and 3x2 box within the bigger grid. This set of six-square puzzles includes three levels of difficulty -- easy, medium-easy and medium.
Each of the 24 puzzles is labeled accordingly and the puzzles get progressively harder as you move to the end. None are as challenging as the nine-square puzzles, though, which makes them perfect anytime you're on-the-go, and find yourself not going. You'll want to keep this in your purse, briefcase, bag, or music tote, because once you start, you won't be able to stop.