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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
does anybody feel this kata deserves higher kyu? I would vote for 6.
Looks like in addition to 'Best Practice' and 'Clever' solutions I strongly would like to have the button 'OMG' or 'LOL' :). Anyway, appreciate the persistance of the author!
Build-in Set type could be used instead of ImpossibilityList