Re: Did my attempt to checkerboard cause a swarm?
It sounds like you took frames out and didn't put them back in. Don't do that. Make sure the hive has as many frames as it can hold. If the hive swarmed, the old queen left, and one of the new ones will take over. Before one of the queens hatch, it lets the other queen she's coming, and she takes off with about 60% of the hive. When the new queen hatches, she kills all the other queens in their cells, and she becomes the new queen, plus this is swarming season, and if you didn't rotate, this could have caused them to swarm.
Before a bee stings, it will be sure to let you know that it will hurt them more than it will hurt you.