[...]

>> If I do this, I would also add a function to browse through the other
>> solutions found by the solver --- only the one with least Hamming
>> weight being shown.
> 
>Then please do and include the above fix in this new patch.
> 
> 
>        Stefan
>

Salut Stéfan,

Here is the ChangeLog:

-----------------------------------------------------------------------
2011-05-28  Vincent Belaïche  <vincentb1@users.sourceforge.net>

	* play/5x5.el (5x5-solve-rotate-left, 5x5-solve-rotate-right): New
	functions.
	(5x5-mode-map): Add keys for 5x5-solve-rotate-left &
	5x5-solve-rotate-right.
	(5x5-mode-menu): Add menu entries for 5x5-solve-rotate-left &
	5x5-solve-rotate-right and make solver a separate section.
	(5x5): Update docstring for showing keymap for 5x5-solve-suggest,
	5x5-solve-rotate-left & 5x5-solve-rotate-right.
	(5x5-draw-grid): Use "()" instead of "O" to display solution when
	the x scale is even, as this is better looking.
-----------------------------------------------------------------------

And here is the patch (it seems that my change of 2011-05-24 has not
been applied, so this patch is relative to the previous one):