12 Days of Christmas
83rd
99 Bottles of Beer
81st
Abundant Numbers
384th
Arabic to Roman
272nd
Arithmetic Numbers
219th
Ascending Primes
205th
Billiards
73rd
Christmas Trees
697th
Diamonds
40th
Emirp Numbers
144th
Emirp Numbers (Long)
33rd
Evil Numbers
1st
Evil Numbers (Long)
33rd
Fizz Buzz
38th
Leap Years
455th
Look and Say
327th
Medal Tally
41st
Poker
32nd
Prime Numbers
456th
Roman to Arabic
315th
ROT13
46th
Sudoku (Fill-in)
106th
Tic-tac-toe
51st
Time Distance
35th
Vampire Numbers
44th