Hahu Game play online

HAHU rule:
1. press 'Start!' to start the main timer (30 seconds)
2. you will get a puzzle (random set of 4 cards), each one has a numerical value
note: A = 1, J = 10, Q = 10, and K = 10
3. think of a way to solve the puzzle by generating 24 or 40 using ALL of the 4 cards and basic math operations in 3 steps
example: 5, 6, J, K
step one: J : 5 = 2
step two: 6 - 2 = 4
step three: K x 4 = 40
4. if you think you have a solution, press 'Hahu!', the main timer will stop for 15 seconds, and a HAHU timer will start for you to make your calculations
5. if you succeed, you gain the remaining time in the HAHU timer as your points, if you fail, you lose 15 points
6. press 'Next' for a new puzzle
7. you can sacrifice 1 point to skip any puzzle
8. have fun!