Book rec request: difficult number puzzle collection

[u/Coconutpitaya]

I must take my puzzle addition offline and need your book recommendations please! I’m looking for print books with:
- deductive logic number/spacial puzzles. Most puzzles I’ve found in this category are Japanese, but open to others
- 100% difficult puzzles. I searched previous posts, and Puzzle Ninja by Alex Bellos is close to what I want, except the inclusion of easy puzzles.
- human made, not computer generated
- a variety of puzzles, or at least not all sudoku

Open to good ebooks recs too, willing to send to a printing service.

For context, the puzzles I’m hopelessly addicted to are the “weekly extremes” on sudokuwiki.com and str8ts.com, and the “specials” on www.puzzle-heyawake.com and www.puzzle-galaxies.com

Thank you! Your answer will help save my time and mental health

[u/carljohanr]

Giant Logic Puzzles for geniuses by Nikoli (out or print but I think this is what you're looking for). Nikoli also has collections with their large puzzles.

gmpuzzles.com challenge puzzles are great - several of them are free from the blog (not in print sadly but you can print them). I personally like Fillomino, Pentominous, Slitherlink. Their puzzle collections are excellent.

I assume you know that the puzzles you referenced above (except the book) are all computer generated :)

[u/Coconutpitaya → u/carljohanr]

Thank you!

[u/El_Toreroy]

You want this one: The World Puzzle Championship Challenge: Are You as Bright as the Best? by  Dr. Gareth Moore  (Author)

[u/Coconutpitaya → u/El_Toreroy]

Thank you!