pstrongMath skills are NOT required for sudoku strong You can have fun and sharpen your mind at the same time. Mental games are very good for your memory, they increase your brain power, and help delay dementia and Alzheimer's.pp pulpplistrongVARIETY OF LEVELS strong David Karn sudoku books are available in one or a mix of several levels of difficulty. There are six levels emBeginner, Easy, Medium, Hard, Very Hard, and Extremeem and they come in various combinations of those. Please check the title and book cover for details.lipplistrongEASY TO READ AND FILL OUT strong Available in various font sizes so that even those with poor eyesight can easily read the numbers. There is a choice of emextra large 42pt, large 36pt, regular 24pt, and medium 18ptem font sizes.lipplistrongSOLUTIONS strong If you get stuck, there are solutions in the back of the book.pplilistrongBOOK SIZES strong You can get our books in the standard large 8.5 x 11 size or a much smaller 5 x 8 travel size that's easy to