Frank Longo
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Subjects -> Entertainment -> Puzzles & Games -> Puzzles
Subjects -> Entertainment -> Puzzles & Games -> Sudoku
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Customer Reviews:
Total reviews: 6
Average rating: 5.0 of 5
Tough puzzles! 5 out of 5 stars.
4 of 4 people found this review helpful.
Mostly very tough puzzles, that (like book #3) lived up to the books' name. We're very happy to have bought #3 and #4.
Question, does Mr Longo know there are duplicate puzzles in #4?
#69 is duplicated in 75, 82, 95, 99, 119, and 127.
#134 is duplicated in 202.
Nail biting and time consuming 4 out of 5 stars.
4 of 4 people found this review helpful.
These are some really, really challenging sudoku. It would be nice in the next edition if we could have some descriptions on how to solve using the more complicated techniques. It would also be nice if the answers included reference to which of the more difficult techniques were used to solve them.
I love the pain! 5 out of 5 stars.
0 of 0 people found this review helpful.
As someone who searches for seriously difficult sudoku, I love this book. The puzzles are all very hard, but still require a variety of solving methods, some of which I find approachable, and others of which are truly painful, at least for me. I agree with another reviewer that it would be nice to have "speaking" solutions, that is, solutions that explain how the puzzle was solved, but solving methods vary so much by player that this is probably only a dream. There are truly no linear solution methods, which is what makes sudoku so attractive.
Compared to the many other books that claim to offer very hard sudoku, this one stands way out as telling it like it is.
I criticised the "Mensa Guide" book for its fragile binding and tiny grids, so I have to award big points for the spiral binding and large grids of this book.
Editorial Review:
Top solvers can try their hand at the One-Sided Gordonian Rectangle; Extended Gordonian Rectangle; Gordonian Polygon; and Alternating Digits. (But they can take comfort in knowing that no more than one will occur in any single puzzle.)