[rules-users] Logic Problems & drools

[Mark Proctor]

Ellen runs a little "logic club" Dr Gernot Starke one the last one, see 
mailing list archives for the problem. The winner gets to post the next 
puzzle, so stay tuned and win, so you can post your puzzle for people to 
try :) I believe that gernot will post the details of his solution to 
the blog soon.

Mark
MarkA wrote:
> I am a big fan of the logic problem puzzles (the ones with the grids) and
> would like to play with drools to solve a few - just for a laugh and to see
> if it can be done. 
>
> I found a pretty simple one:
> ----------------------------
> Mrs. Robinson's 4th grade class took a field trip to the local zoo. The day
> was sunny and warm - a perfect day to spend at the zoo. The kids had a great
> time and the monkeys were voted the class favorite animal. The zoo had four
> monkeys - two males and two females. It was lunchtime for the monkeys and as
> the kids watched, each one ate a different fruit in their favorite resting
> place. Can you determine the name of each monkey, what kind of fruit each
> monkey ate, and where their favorite resting place was?
> 	1. Sam, who doesn't like bananas, likes sitting on the grass. 
> 	2. The monkey who sat on the rock ate the apple. The monkey who ate the
> pear didn't sit on the tree branch. 
> 	3. Anna sat by the stream but she didn't eat the pear. 
> 	4. Harriet didn't sit on the tree branch. Mike doesn't like oranges. 
> ---------------------
>
> But I can't get the logic working, has anyone done any other examples for
> drools (or maybe converted the monkey & banana or cannibal ones from CLIPS)?
>
> I have looked at the golf one in the examples but it's a bit simple. In that
> one it uses variables for each bit $bobsColour etc. and then uses those in
> later rules. I tried it with the one above but I kept needing to refer to a
> variable that I hadn't yet defined and I couldn't define it as it needed to
> refer to another one and so on...
>
> Many thanks,
>
> Mark.
>
>
>