# Old dot notation by Russell challenge

**URL:** <https://swi-prolog.discourse.group/t/old-dot-notation-by-russell-challenge/2677>\
**Category:** Nice to know\
**Tags:** fun\
**Created:** [July 22, 2020, 9:39am UTC](https://swi-prolog.discourse.group/t/old-dot-notation-by-russell-challenge/2677 "2020-07-22T09:39:46Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![PasiK](https://yyz2.discourse-cdn.com/free1/user_avatar/swi-prolog.discourse.group/pasik/32/84_2.png) [@PasiK](https://swi-prolog.discourse.group/u/PasiK)\
**Post date:** [July 22, 2020, 9:39am UTC](https://swi-prolog.discourse.group/t/old-dot-notation-by-russell-challenge/2677/1 "2020-07-22T09:39:46Z")

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> <https://stackoverflow.com/questions/18510551/parsing-challenge-old-logicians-dot-notation/18514959#18514959>