(Print) Use this randomly generated list as your call list when playing the game. There is no need to say the BINGO column name. Place some kind of mark (like an X, a checkmark, a dot, tally mark, etc) on each cell as you announce it, to keep track. You can also cut out each item, place them in a bag and pull words from the bag.
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More than 2 nested loops
Solution builds upon a previous days solution
Used a language you haven't written before
Used recursion
Made it past day 10
Have to repair a broken vehicle
Used regex
Too much math
Traverse a maze
Part 2 requires a re-write of part 1
Solution is off by 1
Solution never finishes calculating
Saved Christmas
Intcodes or Opcodes
Manhattan distance
Works on example input, doesn't work on real input