Beginners: Hit colors, dodge spikes (greys). Hit power blocks inside corkscrew loops for bonus points.

Advanced play: Your main goal should be to collect matches only when the puzzle grid is as full as possible. So it's sometimes advantageous to avoid colour blocks and even to hit spikes

Hitting spikes in this instance however still erases just the one block But it will also bring your clean finish Bonus down from 30% to 15%. so you need to work out if it is going to be worth losing half of that Bonus score - for the sake of bigger grids...

The Scoring is also slightly different in this instead of the mono mode scoring system you have the old mono classic scoring system which brings your score up to 30k ish

Enjoy...