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Year of publication:2018201620152015
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!Volume 3 already of the Advanced series: as volume 2, but of course with 121 new puzzles.
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As PDF download:calcudoku.org


Year of publication:2015201420132016
Puzzle types: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.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 15×15
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
 Amazon US
 Amazon UK

 Amazon Japan

 Amazon Deutschland
 Amazon France
 Amazon España
 Amazon Italia