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Post by cristinab on Nov 2, 2015 6:58:17 GMT -5
Hello, i am Spanish so sorry for my English. I'm working on the problems of Lewis Carroll and I can't solve the problem 5, 6 friends and their wives. I can see your solution please? I took three days on trying and its very difficult for me.
Thank you.
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Post by bobbixler on Nov 2, 2015 8:59:31 GMT -5
I use my Basic code to solve many of these problems. You could try programming your own code or contact the original poster to obtain his methods detailed in his document "Aristotelian Logic and Syllogism". I hesitate to release my own code at this point because I'm looking for more independent verification of what has been discussed here.
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Post by GoetzKluge on Dec 18, 2016 8:28:19 GMT -5
Earlier I came up with my own syntax for this. But Perhaps Prolog is the best tool to solve such puzzles. de.wikipedia.org/wiki/Prolog_(Programmiersprache)#Einsteins_R.C3.A4tsel shows how to solve Einstein's puzzle. (Regrettably, the English WP article doesn't have that chapter.) Best regards from Munich Götz www.snrk.de"Only those questions that are in principle undecidable, we can decide." (Heinz von Foerster: Ethics and Second-Order Cybernetics, 1990-10-04, Système et thérapie familiale, Paris)
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Post by bobbixler on Dec 18, 2016 9:21:33 GMT -5
Prolog looks promising. Let me know if you make any progress using it. I intend to look into Prolog after I finish some other projects.
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Post by GoetzKluge on Dec 31, 2016 4:23:46 GMT -5
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Post by bobbixler on Nov 17, 2017 14:02:29 GMT -5
I now have a solution to the Great-grandson problem:
Great-grandsons cannot be both master/servant and persecutor/victim in that order.
This is his most difficult problem and he doubted that anyone would solve it. As this was near the end of his life it could be that was his final gift of frustration to future logicians.
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Post by bobbixler on May 3, 2018 13:45:02 GMT -5
By the way I've done videos of some of the more difficult Lewis Carroll problems. Just go to Youtube and search "Bixler Lewis Carroll". Also, an update: The original poster, JD Watson, has passed away.
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