WHO WE ARE

At Contextionary, we have a mission to innovate in the world of Sudoku and create original puzzles you have never seen before

WHAT WE DO

We create Sudoku books for the general population to enjoy entertaining moments solving quick and fun challenges.
We create Sudoku books for special-needs groups to fight cognitive decline and maintain a young and agile brain and to suit the needs of the visually impaired.
We create Sudoku books for children to develop their brain and mental capacity at an early age (5 and older).

“ONE TO NINE” SERIES

"One to Nine" is our collection of number Sudoku puzzle books for Seniors, Adults, Kids and Travelers.
The "One to Nine" books are offered in 4 different formats:

=> Easy-to-carry easy-to-read easy-to-work-with medium-sized books that feature only 1 large print classic 9x9 Sudoku puzzle per page for Seniors, Adults, and Young Adults
=> A4 letter-sized books with hundreds and thousands of classic 9x9 Sudoku puzzles for Adults
=> Medium-sized books with 4x4, 6x6, 8x8 and 9x9 number Sudoku grids for Kids and Beginners of all ages
=> Small-sized books for Commuters and Travelers of all ages

THOUSAND PLUS FAMILY: THE FULL EXPERIENCE FOR ADULTS

Beginners to Experts
  • 1008 Sudoku: 330 Easy, 348 Medium, 330 Hard
  • Large print: 18-pt font size
  • Accurate brain effort measure
  • Includes instructions
  • Learn & Grow feature: On-demand step-by-step solutions
Get a Copy
Beginners to Experts
  • 2016 Sudoku: 660 Easy, 696 Medium, 660 Hard
  • 91,670 empty squares to fill with 81,520 basic techniques, 8,824 standard techniques and 1,522 advanced techniques
  • Learn & Grow feature: On-demand step-by-step solutions
Get a Copy
sudoku puzzles for adults
Beginners to Experts
  • 3024 Sudoku: 990 Easy, 1044 Medium, 990 Hard
  • 140,485 empty squares to fill with 124,359 basic techniques, 14,383 standard techniques and 2,391 advanced techniques
  • Learn & Grow feature: On-demand step-by-step solutions
Coming Soon
Advanced Players to Experts
  • 1008 Sudoku: 478 Hard, 178 Very Hard, 312 Extreme, 40 Diabolical
  • 52,919 empty squares to fill with basic techniques and lots of advanced strategies: 680 pairs, 309 triples, 152 quads, 531 pointing singles, 173 boxed singles, 107 X-wings, 149 remote pairs, 313 XY chains, 17 swordfish
  • Learn & Grow feature: On-demand step-by-step solutions
Get a Copy

LARGE PRINT FAMILY: BIG EASY-TO-READ GRIDS FOR ALL AGES

Seniors and special-needs Adults
  • 168 Sudoku: 55 Easy, 58 Medium, 55 Hard
  • One puzzle per page: Solving is easy on the eye
  • Accurate brain effort measure
  • Includes instructions
  • Learn & Grow feature: On-demand step-by-step solutions
Get a Copy
Kids Ages 5 to 12
  • 209 Sudoku: 60 4x4, 80 6x6, 44 8x8, 24 9x9, 1 Wordoku
  • 12 difficulty levels from Very Easy to Medium
  • Achievement score from 0 to 1000
  • Detailed step-by-step instructions
  • 4 checkpoints for additional tips and tricks
  • Includes solutions
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Advanced Players to Experts
  • 340 Sudoku: 85 Hard, 85 Very Hard, 85 Extreme, 85 Diabolical
  • 17,817 empty squares to fill with basic techniques and lots of advanced strategies: 331 pairs, 82 triples, 35 quads, 160 pointing singles, 130 boxed singles, 62 X-wings, 33 remote pairs, 297 XY chains, 25 swordfish
  • Learn & Grow feature: On-demand step-by-step solutions
Get a Copy
Advanced Players to Experts
  • 200 Sudoku: 59 Hard, 62 Very Hard, 67 Extreme, 16 Diabolical
  • 10,643 empty squares to fill with basic techniques and lots of advanced strategies: 122 pairs, 59 triples, 26 quads, 103 pointing singles, 50 boxed singles, 35 X-wings, 27 remote pairs, 154 XY chains, 5 swordfish
  • Learn & Grow feature: On-demand step-by-step solutions
Get a Copy

POCKET FAMILY: TRAVEL-FRIENDLY FOR PEOPLE ON THE GO

Commuters and Travelers
  • 168 Sudoku: 55 Easy, 58 Medium, 55 Hard
  • One puzzle per page: Solving is easy on the eye
  • Accurate brain effort measure
  • Includes instructions
  • Smallest practical size for Sudoku puzzle books (4” x 6”)
Get a Copy
Commuters and Travelers
  • 102 Sudoku: 21 Easy, 55 Medium, 26 Hard
  • 100% travel-themed puzzles: Devices, landmarks, landscapes,, animals, and more
  • One puzzle per page: Solving is easy on the eye
  • Accurate brain effort measure
  • Includes instructions
  • Smallest practical size for Sudoku puzzle books (4” x 6”)
Get a Copy
Commuters and Travelers
  • 168 Sudoku: 59 Hard, 62 Very Hard, 47 Extreme
  • One puzzle per page: Solving is easy on the eye
  • Accurate brain effort measure
  • Includes instructions
  • Smallest practical size for Sudoku puzzle books (4” x 6”)
Get a Copy