Michurinsk. June 25-27.

As far as I know, tournaments used to be held regularly in Michurinsk, and the strongest players would gather there. Then, it seems, everything died down, and now Nagan is trying to revive something... Can anyone tell me about ALL the competitions that took place in Michurinsk? Approximately in this format:
1. Year-month
2. Participants
3. Regulations
4. Winner
5. What was particularly memorable.