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Year of publication:202220212018
Puzzle types:Finally a new volume in the Calcudoku Advanced series! Included are: puzzles using zero, negative numbers, modulo and exponentiation operators, puzzles without operators (called "no-op" or "mystery" Calcudoku), twin puzzles, and many extra large puzzles (from 10 x 10 up to 15 x 15, and even one 17 x 17!). New in this volume: more puzzle variations and more puzzles with binary operators (including the new AND operator). Note that solutions to the puzzles worth points have not been included.This is the first issue of the new "Calcudoku Series" puzzle books. Each month there will be a new puzzle book with 100 Calcudoku puzzles of the greatest variety (from easy to difficult, with twins, "no-op" puzzles, single operator, patterned, up to 15x15 in size!), at the lowest possible price.After two long years, the sequel to the Huge Killer Sudoku book is here, with 50 Medium puzzles, 50 Tricky ones, 75 Difficult, 15 Very Difficult, and TEN 16x16 Killer Sudokus!
As paperback: 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


Year of publication:201520152015
Puzzle types: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. Now discounted from $14.95 to $12.95!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.
As PDF download:calcudoku.org
As paperback: 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


Year of publication:201420132016
Puzzle types:250 (!) Killer Sudoku puzzles, from easy to difficult. For each of the 75 difficult puzzles you can score 9 points on the site.The 4th edition of volume I now also has 121 puzzles: with zero, single operator, with modulo, exponentiation, twin puzzles, many 10×10 and 12×12 puzzles, and one 15×15102 large puzzles (101 12×12, one 15×15): with zero, single operator, exponentiation, etc. 10 easy, 60 medium, and 32 difficult
As paperback: 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: