it is not easy to reduce the scale of code like this. something in this solution is quite inspiring. THX.
Remove all the consonants
Return the 3n+1 sequence for n
2 b | ~ 2 b
Is it an Armstrong number?
Big numbers, repeated least significant digits
Pattern Recognition 1 - Known Unit Length
Self-similarity 3 - Every other pair of terms
Dice roll - opposite faces
Word Search Solver
Lights Out 12 - 5x5, three stages, <7 moves
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