Duels
In duels, try to make large chains of over five items to multiply the collected items and get an advantage. For example, collecting five items in a chain will result in a 2x multiplier, and they will be counted as ten items. Use "Swap" to make even larger chains.
Shuffle
On a level with a lot of "shields" (stone blocks, etc.), use "Shuffle" before your first turn to get immediate access to the trapped bonus objects. Do not use "Swap" too often in normal games. It uses a lot of energy and is needed more urgently during the duels.