Big Book of Sudoku: Over 500 Puzzles & Solutions, Easy to Hard Puzzles for Adults (Brain Busters) Spiral-bound – September 12, 2018

Have patience and all will work out! Great print size. Well worth the money. I did these years ago and loved doing them and I sure that once you get the hang of it, you will too!Vickie

My husband love saduko

I like spiral bound SUDUKO - it is easier to hold and work the puzzles - The print is sort of small if you have issues with small print. This is a great buy to me - it will keep my mind busy for a few months at least.

Spiral bound hours of fun !!Lightweight , not tiny but not huge .Font just big enough to not squint if perhaps your eyes are aging like mine … Easy , peasy .. to NO I don’t think I can do this !! Nice little Sudoku puzzle book . Get your pencil sharpened and s refreshing drink and have a bit of brain tickling !!

I have been working on the puzzles in this book infrequently for a year now. My only issue is that there is not a good range of difficulty. The puzzles get harder at each interval (warm-up, challenging, etc.) but the jump is too high. The second level of difficulty feels about 10x harder than the first level of difficulty.

Sorry for the pun ... I've gone through many Sudoku books and have never had this type of binding. The pages lay flat so you don't have to hold the pages open against a binding. The paper quality is also superior to the newsprint type of paper, plus it has an easy to read font.

These puzzles range from simple ones to tough ones, and I like having that variety - the easy ones for when I want a quick break from doing something different and the harder ones for when I have time to work a bit longer. There are some "Samurai Sudoku" puzzles, too - 4 9X9 grids with a 5th grid intersecting part of each of the others. I'd never done those before, and I like them.The binding is quite good. I usually tear out the pages as I am done with them, and the binding holds up well for that. The paper is good for writing with both ink and pencil, and it is sturdy enough to stand up to erasing.When I first got this book, I thought that perhaps the puzzles, two to a page except for the Samurai ones, might be too small. I admit to sometimes jotting numbers in the bottoms of the squares when I am stumped. I can still do that with this book, despite my initial reservations.I use those little Post-It arrows to mark the first empty page of each section so it's easy to find the degree of challenge I want at the time. Little built-in tabs would have been nice but that would probably have made this not such an easily affordable book. I don't know if this book comes in different volumes, but if it does, I'm going to get another one when I get close to running out of these puzzles. For me, doing these puzzles is very relaxing.

Writing answers in small boxes can be difficult for elderly. This book takes that frustration away and joy is enhanced. The spiral binding is a must! I will no longer purchase puzzle books for my mother that are not spiral bound. Thank you!