masudoku v1.4-8

I find it much better now. The ability to change the colour scheme is a big bonus, and by using practice mode I can see what numbers are possible in each cell at a glance which goes some way towards the auto filling I mentioned in my previous comment.

Having now used it for a while, I have to agree with George Fraser's previous comment - I find the hardest level quite easy to solve, so I guess the algorithm used to create puzzles is lacking.

This was further confirmed when I manually entered (by starting with a blank table) harder puzzles from magazines and newspapers whereby Masudoku informed me that the table was unsolvable even though it was in fact solvable (and I solved it!).

This also happens when I enter puzzles created by another sudoko program for the N900 called 'EightyOne'. Puzzles created by this program on the 'Hard' setting (and harder settings) will be shown as unsolvable when manually entered into Masudoku.

If the algorithm for creating (and therefore identifying/solving) puzzles could be improved we'd be on to a 5 star winner here. :-)

Good job, Petri Kultanen. However puzzle should not be unalterable by player. At least, the color of the puzzle letters should be different from the letters filled by users.

A good sudoku game. The only problem that i have with it is that the puzzles seems to be limited while playing the hardest level, do not know if it is like that with the rest of levels tho. Also, the settings that are to be used to change the color scheme does not seems to be working because whenever i try to change them, it does not do anything

Does what it says

Excellent and fun!

It works well as stated. I really like the ability to enter a puzzle from a magazine or newspaper.

I do have a few comments/recommendations I'd like to make.

I found the red markup numbers hard to read. I then realised that the markup numbers were only red if they were invalid options and were white if valid. If you're going to effectively show us what numbers are valid possibilities in each cell, why not simply include an option or button to automatically fill in all the markup numbers and save us the time of having to work them out?

Some may think of that as cheating, but reality is that it's not difficult to work out valid possibilities per cell and having the software work it out for you saves you a lot of (monotonous, boring) time and allows you to enjoy the actual solving of the puzzle. I used to have this feature in a version of sudoku on my Palm and it really made the puzzle very enjoyable.

I also find the colour scheme and font hard on the eyes. I think it needs a font where the thickness of the lines/curves don't vary depending on the slant. Also, a dark font on a light background is easier on the eyes. Perhaps it may be possible for the user to choose the colours from a menu?

And that's it really. If these two issues could be addressed I'd certainly give it five stars!