Sudoku puzzles are great to keep the mind sharp. What are some benefits of working on Sudoku challenges? It boosts logical thinking and decision skills; it can help memory, math and recall; some studies show it can help slow the negative impacts of Alzheimer's; it can help with concentration. 200 puzzles at the hard or advanced level are found in this book - with solutions included. The large size book makes it easy to work the puzzles. Enjoy
ThriftBooks sells millions of used books at the lowest everyday prices. We personally assess every book's quality and offer rare, out-of-print treasures. We deliver the joy of reading in recyclable packaging with free standard shipping on US orders over $15. ThriftBooks.com. Read more. Spend less.