Loading collection data...
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.
your hueristic is not good enough.
the total cost between two points on a grid is not the manhatten distance, but the total differences between each two nodes on the path.
btw, a* is overkill for this kata, if you don't believe me try having getHeuristic always return 0 ;)