What is the best way to: How can I open a tight key ring without hurting my fingers or nails?

OPTIONS:
[-] Use a staple remover and push the points of the remover between the bound parts of the ring to widen enough to add or subtract a key.
[-] Use a staple remover and push the points of the remover between the bound parts of the ring to widen enough to add or subtract a staple.
Answer:
Use a staple remover and push the points of the remover between the bound parts of the ring to widen enough to add or subtract a key.