## Dots only

Everything about Sudoku that doesn't fit in one of the other sections

### Dots only

Some of us use dots to assist in Sudoku solution.

I will pencil in a dot in the appropriate place to indicate that a cell cannot be a specific number.

So for example a cell that contains the layout below could be a 5 or 9.

...
_..
..

(Sorry, I know that's probably teaching granny to suck eggs, but I thought it best to explain fully.)

My question is this. Would it be possible to produce a solveable grid that has no actual starting numbers, merely dots indicating two numbers could go in the relevant cells?

(Edit: It lookes like leading spaces go missing, so I replaced with an underscore)
CarolineMary

Posts: 3
Joined: 09 September 2005

use {code} ..picture in ascii-art.. {code}
with [] instead of {} as here:

Code: Select all
`. . ..   .. .`

yes, I think it can probably be done but I'm too lazy to figure out an actual example. Maybe later. Or maybe Tso knows this

edit: it doesn't look good with points, so I try it with "*" :

Code: Select all
`* * **   ** * `
dukuso

Posts: 479
Joined: 25 June 2005

See this post:

http://forum.enjoysudoku.com/viewtopic.php?t=1033

The puzzle DIGIT PLACE can be considered an example of exactly what you suggest.

Code: Select all
`(.23456)(...456)(123456)|(.23.56)(1.3456)(...456) (.23456)(123456)(123456)|(1234..)(123456)(123456) ------------------------+------------------------ (.23.56)(123456)(.23456)|(...456)(.234..)(...456) (.2...6)(.23.56)(.23.56)|(123456)(.2...6)(123456) ------------------------+------------------------ (123456)(.2...6)(.2...6)|(123456)(.234..)(.234..) (.23456)(...456)(...456)|(123456)(...456)(.2...6) `

Another one is here:
http://forum.enjoysudoku.com/viewtopic.php?t=995&postdays=0&postorder=asc&start=15
tso

Posts: 798
Joined: 22 June 2005