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||Clear 3 Coals in a single move.|
|Coal Mine 2||Clear 6 Coals in a single move.|
|Coal Mine 3||Clear 8 Coals in a single move without using Lightning Gems.|
|Coal Mine 4||Clear 12 Coals in a single move.|
|Coal Mine 5||Clear 15 Coals in a single move without using Lightning Gems.|
|Coal Mine 6||Clear 18 Coals in a single move.|
|Coal Mine 7||Clear 20 Coals in a single move without using Lightning Gems.|
|Coal Mine Eclipse||Clear as many Coals as possible within three 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|