More brain busting

1 gallon-  Fill the 9 gallon bucket.  Pour 4 gallons into the 4 gallon bucket and pour it out.  You now have 5 gallons in the 9 gallon bucket.  Pour 4 gallons into the 4 gallon bucket and pour it out.  You now have 1 gallon in the 9 gallon bucket.

2 gallon- solve for number 1 twice

3 gallon- fill up the 4 gallon than pour 1 gallon out

4gallon- fill up the 4 gallon bucket

5gallon- Fill the 9 gallon bucket.  Pour 4 gallons into the 4 gallon bucket and pour it out.  You now have 5 gallons in the 9 gallon bucket.  Pour 4 gallons into the 4 gallon bucket and pour it out.  You now have 1 gallon in the 9 gallon bucket. Fill up the 4 gallon bucket.

6gallon- fill up the 9 gallon and pour it into the 6 gallon until its full

7gallon- fill up the 4+3 gallon

8gallon- fill up the 4 gallon twice

9gallon- fill up the 9 gallon bucket

10gallon-fill up the 6 gallon and the 4 gallon and pour it into the 10 gallon

11gallon- fill up the 9 gallon and fill up the 4 gallon into until 11 gallons are full

12gallon- fill up the 4 gallon 3 times

13gallon- you add the9+ 4 gallon bucket