Here are hundreds of free Calcudoku puzzles suitable for printing. Inkies have the same rules as the famous puzzles created by Tetsuya Miyamoto. They are various called KenKen®, Calcudoku, Mathdoku, and Web Kendoku. Each Inky puzzle has only one unique solution.

Mixed 9x9 Inkies by Krazydad, Volume 18, Book 94 Fill in the blank squares so that each row and each column contain all of the digits 1 thru 9.

Medium 4x4 Inkies by Krazydad, Volume 1, Book 3 Fill in the blank squares so that each row and each column contain all of the digits 1 thru 4. The heavy lines indicate areas (called cages) that contain groups of numbers that can be

Krypto Inky Puzzles. Krypto Inkies (a Krazydad original puzzle) are regular Inky (or Calcudoku) puzzles that have been encrypted. Each digit has been substituted with a letter. To solve the puzzle, you must deduce what digit each letter stands for, while working out the solution to the decrypted puzzle.

Mixed 9x9 Inkies by Krazydad, Volume 14, Book 96 Fill in the blank squares so that each row and each column contain all of the digits 1 thru 9.

Hard 9x9 Inkies by Krazydad, Volume 5, Book 11 Fill in the blank squares so that each row and each column contain all of the digits 1 thru 9. The heavy lines indicate areas (called cages) that contain groups of numbers that can be

Hard 9x9 Inkies by Krazydad, Volume 2, Book 5 Fill in the blank squares so that each row and each column contain all of the digits 1 thru 9. The heavy lines indicate areas (called cages) that contain groups of numbers that can be

6x6 Krypto Inky Puzzles, Volume 3. Each booklet contains a collection of eight different puzzles, with a page of answers in the back. The booklets are ordered by ascending difficulty -- the puzzles in book 100 are much harder than the puzzles in book …