Triangle Numbers Below N
Back to basics 10 - Max Float
Back to basics 19 - character types
Stuff the Board
Is this a valid Tic Tac Toe State?
Weighted Gold/Silver Standard
Scrabble Scores - 11
Lights Out 23 - 6x8, x moves
Divisible by n, prime divisors from 20 to 200
Divisible by 2
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