Saving the Sled Dogs

There is a big dog sled race coming up and you are in charge of getting all the dogs ready. However, you have come across a problem. The cages for the dogs are locked and you can’t find the key. What are you going to do? You remember there is an extra key hidden in a secret and safe place. Can you crack all of the codes to get to the key? Will you be able to do it in time to get the dogs ready for the race?

Figure out the codes to all of the locks in order to find the key and be able to get the dogs out!