1 of 1 people found the following review helpful:
4.0 out of 5 stars
A fun number puzzle, 30 Oct 2007
By Math Man - Published on Amazon.com
This review is from: The Book of Hitori: And How To Solve It (Paperback)
As a bored Sudoku solver, I like finding variations of logic and number puzzles. I did some Hitori puzzles in Games Magazine and enjoyed them, so I decided to get this book.
Hitori puzzles are unlike Sudokus in that the grid is initially filled in and you need to erase (black out) numbers. When you're done blacking things out, each row and column will have no more than one of each number in it. Each row/column does not NEED to have every number in it - in fact, a row or column is normally missing one or more of the digits. Additionally, no two blacked out squares can be adjacent on an edge and there must also be a path connecting all the spaces. That is, you can't block off any square completely from the others.
Sound complicated? It seemed that way at first, but the book starts you off with simple puzzles (4 x 4) and then you work up to 17 x 17 puzzles! I actually haven't done any of the 17 x 17 puzzles in the book yet; I'm saving them for my next long plane ride.
The author's introduction is quite clear and helpful, providing you with some of the key points to get you started on solving the puzzles. The puzzles themselves vary by level of difficulty and by size of the grid.
Although my copy of the book was poorly bound (the first 30 pages or so fell out), the contents are quite enjoyable. If you enjoy Sudoku type puzzles, this makes for an excellent vacation from the 9 x 9 grid.
4.0 out of 5 stars
A great addition, but..., 2 Dec 2007
By S. - Published on Amazon.com
This review is from: The Book of Hitori: And How To Solve It (Paperback)
This was my first try at Hitori, and I haven't been able to put this book down for most of the week!
The instructions are easy to follow, and the puzzles are set into sections of 20 puzzles per difficulty. There are different size grids in each difficulty, so you can get into some time consuming puzzles before you reach the last levels.
I do have a relatively minor complaint: The author says there are "walkthroughs" on his website, but there aren't. So when you get stuck, you have to peek at the solutions... which doesn't really teach you how to get around roadblocks. I have gotten through the first 80 puzzles just using the rules with some minor "what happens if..." strategies. The last 20 take more "trial and error" tactics but are still logic driven.
Either way, it's a great addition for puzzle lovers and I hope to see more Hitori books on the market soon!