login
Hints
(Greetings from The On-Line Encyclopedia of Bongard Problems!)
Search: keyword:hard
Displaying 1-10 of 39 results found. ( next )     page 1 2 3 4
     Sort: id      Format: long      Filter: (all | no meta | meta)      Mode: (words | no words)
BP112
BP162
BP344
BP383
BP394
BP559
BP564
BP793
?
?
BP795
BP796
( next )     page 1 2 3 4

Welcome | Solve | Browse | Lookup | Recent | Links | Register | Contact
Contribute | Keywords | Concepts | Worlds | Ambiguities | Transformations | Invalid Problems | Style Guide | Goals | Glossary