There are various obstacles and items appearing in certain levels of the game. Every obstacle needs to be dealt with differently.
Boxes are static obstacles blocking your board. You can remove them by activating blasters or creating matches next to them. Boxes can have up to 5 health so you might need to create up to 5 matches next to them in order to remove them from the board.
Cans can be found in boxes but not every box contains a can. So you might need to search for them.
Pieces covered in oil can't be used for switching and won't be affected by gravity. To remove the oil you need to activate blasters or create matches next to it. Oil can have up to 5 health.
Jewels can be found underneath oil fields but not every oil field covers a jewel.
Pieces covered in chains can't be moved or affected by gravity. Remove the chains by activating blasters or creating matches with the pieces underneath them. Chains can have up to 5 health.
Pieces covered in ice can't be moved but they are affected by gravity. Remove the ice by activating blasters or creating matches with the pieces underneath it. Ice can have up to 5 health.
Spread the boards over the whole level field by activating blasters or creating matches over them.
Unroll the board stack by creating matches next to it to be able to start spreading boards.
Bring the lifebuoy to the end of the field by clearing the path for it through matches!
Collect the extra turn piece to get one extra turn!