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These puzzles are doable, but they do require more concentration than most other killer sudoku books I have completed.
This author is an artist. I have various books of killer, jigsaw, samurai and combination in various places in my house, and will always find something to engage me, whether it's a more simple puzzle coz Ihave to do the shopping soon, or the lovely feeling of sitting back and poring over a killer jigsaw samurai. The page quality is great and that's a big issue for me.
I don't know if this guy uses computerised methods to create his masterpieces, but if he does, it's not showing. Mmmmmmmmmmmmmm. As with stated hand-worked puzzles, there is a certain feel that you don't generally get with the computerised versions.
Yes. When I compare the enjoyment i get from other publishers (Times, Shorten, Mensa, "Official" etc) I always come back to djape. I hope he publishes more, because I will have finished all his books before too long, and then what am I going to do.
Yes. I agree with all the other reveiwers who gave this a five star.
With the added layer of sum cages, you'll realize you're off more quickly.Many times I'll think I'm stuck on one, then come back the next day and see something I missed before. You erase the whole thing and start over. but I like being challenged. That's what I love about killer sudoku. Another thing I like about killer sudoku is that you'll know sooner that you've made a mistake. Yes, these are extremely difficult puzzles (beginners start elsewhere).
Yeah, the highest "IQ" level puzzles are ridiculous - I could only solve about half of them. That rarely happens with killer sudoku. When I first started this book, I thought they went too far. Ever do a plain sudoku and find at the VERY end that you went wrong. They're so much more complicated, and for me, more interesting. However, I plugged away at them, discovered new methods along the way, and slowly but surely improved my skill level until I could almost do them all.
I hate to reach a certain level and think there's no more room for improvement (except for speed I suppose), so many other logic puzzles have become too boring for me now.
However I did find two puzzles in this book with unsolvable rectangles (and therefore there is no solution tothe puzzle). great group of puzzles. these are "thinkers" and not the trivial puzzles you find in some of the other collections.
I'm nearly through this one and will either go back with a big eraser to start over again or buy another copy.And: if you've never done Killer Sudokus before, it includes a little primer on the tricks for doing this kind of puzzle at the front of the book. (Nothing as hard as the "Mind Bending" found on a popular killer sudoku website--and nothing quite as easy as the "easy" puzzles on that site either). I've been doing Killer Sudokus for more than a year and enjoy them far more than traditional sudoku. This is a very nice collection with a range of difficulties that excludes both the easiest and very hardest I've ever seen.
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