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Puzzle types:NEW

Volume 3 already of the Advanced series: as volume 2, but of course with 121 new puzzles.

The ideal holiday puzzle book, with 250 puzzles (!) in many variants: puzzles with zero, twin puzzles, extra large puzzles (up to 12x12!), and much more. There are 50 easy puzzles, 150 medium, and 50 difficult (score 10 points for solving each of those), sorted in increasing order of difficulty.121 puzzles for the advanced solver: twin puzzles, extra large puzzles (up to 17×17!), with exponentiation, modulo, without operators, etc. Score 12 points on the site for each correct solution.250 (!) Killer Sudoku puzzles, from easy to difficult. For each of the 75 difficult puzzles you can score 9 points on the site.
As paperback: Amazon US
 Amazon UK

 Amazon Deutschland
 Amazon France
 Amazon España
 Amazon Italia
 Amazon US
 Amazon UK

 Amazon Japan

 Amazon Deutschland
 Amazon France
 Amazon España
 Amazon Italia
 Amazon US
 Amazon UK

 Amazon Japan

 Amazon Deutschland
 Amazon France
 Amazon España
 Amazon Italia
 Amazon US
 Amazon UK

 Amazon Japan

 Amazon Deutschland
 Amazon France
 Amazon España
 Amazon Italia
As PDF download:calcudoku.org