# Sub Doku

## The mathematics of Su Doku

A Sub Doku is a Su Doku played on a smaller grid. Some Sub Dokus have special names. The individual pages contain more on the mathematics of the puzzles. If you want examples of the puzzles to solve, then just click on the links to the pdf files.

- Two Doku
- is played on a 2×2 grid with rules which are forced to be somewhat simpler than those of Su Doku. Nevertheless it is a great place to understand some of the complicated enumeration problems of Sudo Clues.
- Shi Doku
- is played on a 4×4 grid. You can either visit the page on Shi Doku by clicking on the link above, or get a pdf file with some puzzles.
- Go Doku
- is played on a 5×5 grid. It is an example of a Prime Su Doku.
- Roku Doku
- is played on a 6×6 grid. You can either visit the page on Roku Doku by clicking on the link above, or get a pdf file with some puzzles.

© Sourendu Gupta. Mail me if you want to reproduce any part of this page. My mailing address is a simple (satisfactory) puzzle for you to solve. Created on 09 October, 2005.