Books
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| Year of publication: | 2024 | 2022 | 2021 | |
| Puzzle types: | NEW Extra large puzzles only: sixty 10x10, sixty 12x12, and thirty 15x15 puzzles! Easy, medium, and difficult. Score 12 points on the site for correct solutions to the medium and difficult puzzles. | A nice compact format (21 x 21 cm, or a bit over 8 x 8 inches), large print, and 100 entertaining puzzles: Easy & Medium Sudoku, Calcudoku, Suguru, Futoshiki, and Thermo Sudoku. Probably the first ever puzzle book with AI illustrations (!) | Keep your brain fit with this entertaining mix of puzzles: 40 Sudoku, 40 Calcudoku, 20 Futoshiki, 20 Thermo Sudoku, 20 Logic Puzzles, and 10 Killer Sudoku! Half of them easy, the other half medium. An explanation and short tutorial are included for each puzzle type. And ten of the medium Calcudoku puzzles are worth 8 points each on the site :-) | |
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| Year of publication: | 2018 | 2015 | 2015 | |
| 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). | 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. | |
| As PDF download: | calcudoku.org | |||
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| Year of publication: | 2015 | 2014 | 2013 | |
| 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. | |
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| As PDF download: | calcudoku.org | |||