nice Puru,  i like that one too.  

I also like this one and would be nice to have this as an option for Oxwall.  You basically ask a question for example.  What are the ingredients of a ice cream cone?  And then  you have to slide the correct values to the correct box.

https://www.phpbb.com/customise/db/mod/sortables_captcha_plugin/

no sir,  althought slightly on the same line, smart captcha just asks a question and you type in the answer. 

the sortables captcha has a different process...

for example:

The captcha would be: 

 What do you need to make a sandwhich?

then you have two boxes (drag and drop)

      keep                           throw away

_______________      _______________

bread

rocks

meat

fork

ink

mustard

flashlight

---------------------      -----------------------

everything NOT associated with sandwhich would be dragged and dropped over to the "throw away box"  which leaves the correct items in the "keep box"

so the answer would be

What do you need to make a sandwhich?

    keep                    throw away

_______________ _______________

bread                         rocks

meat                          fork

mustard                     ink

                                 flashlight

--------------------- -----------------------

solved

i like the drag and drop way of doing this, as drag an drop requires human interaction.