CombinationLock.com (Combination Lock) includes many math games in which you use the clues
to work out the combination to the lock. The answers and the clues to the number games are computer
generated and completely random (the only exception being the home page math game which is fixed).
The Practice area is for practising the different puzzle
types. Solo Play games unlock as you complete each one.
Your best times for these number games are displayed in the Hi Scores area.