Luxor 3

place the white ball you have at the tip of the foremost chain (in other words not next to the other white one; one should be at one end next to the scarab and the other at the other end.)

If you need extra help,
You can then place the other balls, blue and red so that when you place the two black balls (keep the other one for the top chain) the consecutive chain-blasts will propel the rest backwards

play level 1 of puzzle mode and get the coins and restart it over again until you get the desired amount of coins

When you make three matches in a row, the 3rd match will always create a power-up.
For example, if your 3rd match is GREEN, you will get a GREEN power-up (either Net or Reverse).
This will help when you are in a hard level with TURQOISE and ORANGE balls. You can plan your shots to get a Colour Sort or Firestorm!
You can always see what colour each power-up is by going to the How To Play section at the Menu.

Riddle of The Sphinx Achievement: Puzzle Campaign Completed!
Human Net Achievement: Caught All Drops in a Level!
Coin Collector Achievement: Over 1.000 Coins Collectd!
Eliminator Achievement: More Than 10 Matches in a Row!
Powerups Achievement: Upgraded All Powerups to Maximum!
Master of Reflection Achievement: 25 Matches or More Using Reflector!