CALkuro Video Tutorial

Introducing CALkuro by Lovatts – a puzzle designed to make you smarter!

CALkuro (inspired by the Japanese KenKen®), is two parts Sudoku to one part Kakuro. Add half a part of Addoku and a splash of Shapeshifter…

Before you tackle your first puzzle, watch this brief tutorial by Christine Lovatt then click over to YouPlay to be among the first to sample and solve this CALculated challenge for CALculating minds.

»Click here to play CALkuro on YouPlay

Christine’s Cryptic Tutorial

Join Cryptic Queen, Christine Lovatt, as she walks and talks you through a simple cryptic crossword – clue by clue.

Each clue is animated to demonstrate the rules behind these devious, but not-so-difficult, puzzles. You’ll be an expert in no time!

Unique Blocks

UNIQUE BLOCKS are essential tools for solving Kakuro and Addoku puzzles. For example a total of 4 in 2 squares is a UNIQUE BLOCK. It can’t be 2 + 2 because each line of numbers can contain only one of each numeral. So the two squares can have only 1 or 3, though you don’t know in what order the 1 and 3 go until you look at the other sums around them.

This table gives you all the Unique blocks between 2 and 8 cells in length.

TOTAL	SQUARES	POSSIBLE NUMBERS	CAN’T HAVE
3	2	1,2	3,4,5,6,7,8,9
4	2	1,3	2,4,5,6,7,8,9
16	2	7,9	1,2,3,4,5,6,8
17	2	8,9	1,2,3,4,5,6,7
6	3	1,2,3	4,5,6,7,8,9
7	3	1,2,4	3,5,6,7,8,9
23	3	6,8,9	1,2,3,4,5,7
24	3	7,8,9	1,2,3,4,5,6
10	4	1,2,3,4	5,6,7,8,9
11	4	1,2,3,5	4,6,7,8,9
29	4	5,7,8,9	1,2,3,4,6
30	4	6,7,8,9	1,2,3,4,5
15	5	1,2,3,4,5	6,7,8,9
16	5	1,2,3,4,6	5,7,8,9
34	5	4,6,7,8,9	1,2,3,5
35	5	5,6,7,8,9	1,2,3,4
21	6	1,2,3,4,5,6	7,8,9
22	6	1,2,3,4,5,7	6,8,9
38	6	3,5,6,7,8,9	1,2,4
39	6	4,5,6,7,8,9	1,2,3
28	7	1,2,3,4,5,6,7	8,9
29	7	1,2,3,4,5,6,8	7,9
41	7	2,4,5,6,7,8,9	1,3
42	7	3,4,5,6,7,8,9	1,2
36	8	1,2,3,4,5,6,7,8	9
37	8	1,2,3,4,5,6,7,9	8
38	8	1,2,3,4,5,6,8,9	7
39	8	1,2,3,4,5,7,8,9	6
40	8	1,2,3,4,6,7,8,9	5
41	8	1,2,3,5,6,7,8,9	4
42	8	1,2,4,5,6,7,8,9	3
43	8	1,3,4,5,6,7,8,9	2
44	8	2,3,4,5,6,7,8,9	1

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