Collins Uk Staff
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Subjects -> Entertainment -> Puzzles & Games -> Puzzles
Subjects -> Entertainment -> Puzzles & Games -> Sudoku
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Customer Reviews:
Total reviews: 12
Average rating: 5.0 of 5
Plenty of fun 5 out of 5 stars.
2 of 2 people found this review helpful.
I do enjoy regular Sudoku. But there are a couple of problems with it. First, while it uses numbers, it in no way uses the properties of numbers. Second, the level of effort to solve such puzzles is generally uneven; you may get a few numbers early, but then it gets very tough, and soon after that it is easy again. When it is tough, you may have to write down possible values in a square or guess, and that's unsatisfying compared to being able to simply write down correct numbers in blank squares.
With Killer Sudoku, one does get to use the additive properties of numbers, so there really is a difference between the symbols! And the level of effort is more nearly even. In addition, even hard puzzles generally can be solved without writing anything down but the answers. It is my favorite Sudoku variant ("Greater than Killer Sudoku" is my second favorite).
This book is about at the right level. Do not be scared by the "deadly" puzzles at the end, as I found them to be easier than some of the earlier ones.
I recommend this book to all those who enjoy a challenge and have some time on their hands.
Editorial Review:
Just when you thought it was safe to pick up a pencil
Killer Su Doku is based on the original Su Doku grid, with the same rules and numbers—1 to 9—but with an added deadly twist. This time there is an element of arithmetic involved and there are few, if any, clues. The aim is to not only complete every row, column, and cube so that it contains the digits 1 to 9, but to also fill in the outlined cubes so they add up to the same number.
Hints to solve the puzzle are hidden in the joined squares where only one combination of numbers applies. In the case of joined squares, if the printed number is 3, it should be 1 and 2 that go into the squares. Likewise, in the case of three joined squares, if the printed number is 6, the only combination possible is 1, 2, and 3.
To add one final fiendish level, each puzzle also has a time worked out by its Japanese creators so you can try to beat the clock.