KATA Runes (Find the unknown digit) https://www.codewars.com/kata/546d15cebed2e10334000ed9
KATA Chess (Shortest Knight Path) https://www.codewars.com/kata/549ee8b47111a81214000941
KATA SumOfK (Best travel between N cities) https://www.codewars.com/kata/55e7280b40e1c4a06d0000aa
KATA Descending Order https://www.codewars.com/kata/5467e4d82edf8bbf40000155
KATA Halloween (Halloween Trick or Treat) https://www.codewars.com/kata/halloween-trick-or-treat
How many numbers III (Combinations) https://www.codewars.com/kata/5877e7d568909e5ff90017e6
KATA : Fun with trees: array to tree (Create a binary tree from an array) https://www.codewars.com/kata/57e5a6a67fbcc9ba900021cd
KATA : max sum elements of the tree https://www.codewars.com/kata/57e5279b7cf1aea5cf000359/train/java