Black Belt Sudoku® (Martial Arts Puzzles Series)

For a book labeled "super tough", these are not. If you're looking for something that about matches the 3-star puzzles in your local paper, then this is for you.

I bought this book after going through the "brown belt" book. I had hoped these puzzles might be a bit harder, but its pretty hard to tell any supposed difference in difficulty between the brown and black.My local newspaper offers sudoku puzzles that are rated on a scale of 1 (easy) to 4 (hardest). I usually have to mark up the "3" puzzles with notes. I always have to mark up the "4" puzzles to solve them, and even with the mark-ups, I don't always succeed in solving them.These puzzles I'd rate between the "2" and "3" level. I solved them all without needing to make any notes. They're enjoyable, but only a few were more than a few minutes' work. For me, that's acceptable: something to help me wake up in the morning, or to keep me occupied when I have a little time to spare. But if you're looking for level "4" puzzles, this is NOT the book you want. I rated the book four stars because I did enjoy the puzzles, but the book does not live up to its name.

Accurate title. Harder than brown belt but still solvable with some less linear thinking.

These puzzles are far easier than those of the other Black Belt books.

Fun, entertaining. If you like Sudoku puzzles, these will be challenging but not impossible. This is the most challenging of a series of Sudoku books named after Karate belts. As a beginner, I started with the white belt version and worked my way through the series to this level. I have enjoyed it all along the way.Unlike the Sudoku puzzle magazines, this book, and the others in this series, have sturdy pages and large Sudoku grids. Each book has hundreds of them!

I am only on number 33, but so far I would call these quite easy. I don’t consciously use any tricks that people talk about, just basic logic. I have been able to do these in pen without any notations to help me figure out what goes where. The Black Belt 2nd Degree was often too hard for me, so I’ll try 1st degree. In every other way these are lovely puzzles in a nice book.

Have used this puzzle book before.

These won't stress you out, but they're not the easiest, by any means.They're 'comfortable', so to speak. Great to do when you want a diversion but are not looking for a major challenge. I gave one to my sister awhile ago. She's just about on the last puzzle and was ready to erase the completed ones, so she do could do them again. I'm getting her another book, as a surprise. I'm almost finished with my book, and my husband has one,as well.

マス目の大きさが適切なので、マス目に自分なりの記号を鉛筆書きできること、他と比較すると紙質がいいので記入数値を消しゴムで消して何回も使用できること、これらの点が気に入っています。このシリーズは中級から最上級の「Way Beyond Black Belt」まで全て購入しておりますが、それぞれクイズのレベルも適切でした。使い過ぎで前の本が一部破れてきたので、今回再購入しました。

These are not really all that hard

I bought it on 15 March '18. It cost me Rs 293. However on the back its cost was written as Rs 199. Now I see it is being sold at Rs 450. This is highly overpriced at this current price.

It is not so tough to call it as black belt. Also MRP in book is 299 and not 399 as mentioned

Disappointed with this book. It was bought as a present and I was hoping it was going to be a new challenge, but it wasn't.