Arrange numbers 1 to 36 to the small circles and ovals, with rules:
- sum of any two of them which are adjacent is a triangle numbers.
- The first 12 Triangle numbers are 0, 1, 3, 6, 10, 15, 21, 28, 36, 45, 55, 66
- Some numbers are already there as guide.
- There is only 1 unique solution.
The puzzle is inspired by this puzzle