Related:

• If you wish, You will have an opportunity.
• If you wish to, you will have a good opportunity to get even.
• Knocked, you weren't in. -- Opportunity
• Data: "A characteristic response to the Kriskoff Gambit is to counter with the El Mitra Exchange, particularly since I have already taken both of your rooks.
  By missing that opportunity, you have left your king vulnerable....
• You will wish you hadn't.
• As you wish, so be it.
• Nowadays, when opportunity knocks, you have to unlock both deadbolts, remove the chain, and turn off the burglar alarm.
  .....