In Japanese it is written sūdoku (数独). The characters mean "number" (sū) and "single" (doku). It is pronounced like "sue dock". However, the word "sudoku" is not in common use for these puzzles in Japan, and the word sūdoku is actually an invention.
Copyright © 1994-2025 Ben Bullock
If you have questions, corrections, or comments, please contact Ben Bullock or use the discussion forum / Privacy policy
![]() |
![]() |
![]() |
![]() |
![]() |
Book reviews |
Convert Japanese numbers |
Handwritten kanji recognition |
Stroke order diagrams |
Convert Japanese units |