The puzzles of Coal Mine involve clearing specific numbers of Coals in one move each. Certain puzzles also prohibit the use of Lightning Gems; clearing them negates any progress made toward the puzzle status. However, no penalties occur for creating Lightning Gems in those puzzles.
Completing the first puzzle of Coal Mine unlocks Chain Reaction, the next challenge in Challenge mode.
|Coal Mine 1||Destroy 3 coals in 1 move|
|Coal Mine 2||Destroy 6 coals in 1 move|
|Coal Mine 3||Destroy 8 coals in 1 move without using any Lightning|
|Coal Mine 4||Destroy 12 coals in 1 move|
|Coal Mine 5||Destroy 15 coals in 1 move without using any Lightning|
|Coal Mine 6||Destroy 18 coals in 1 move|
|Coal Mine 7||Destroy 20 coals in 1 move without using any Lightning|
|Coal Mine Eclipse||Destroy as much Coal as you can in 3 minutes|
- Clearing Supernova Gems also negates progress in the puzzles that prohibit using Lightning Gems.
- The puzzles of Coal Mine are the only ones in Challenge mode that feature Coals.
Names in other languages
|Portuguese||Mina de carvão||Coal Mine|
|Spanish||Mina de carbón||Coal Mine|