A bit more information about the event -
Format - Every year the Millennium Standards differ and keep increasing (thus giving more challenge to achieve so many points), but at the same time, World Ranking List is adjusted with latest scoring system, so the total scores achieved in past get slashed and reduce.

Criteria - To Achieve IMM Title, all the following criteria must be met:

1. 3000+ championship points in WMC
2. 10+ decks of Cards Memo (1 hour event)
3. 1000+ Digit Numbers Memo (1 hour event)
4. Sub-2 min time in Speed Cards (Max. 5 min event)

1, 2 & 3 MUST be achieved in WMC (world memory championship only; side note: One hour events are only held during WMC and not in National and International formats)

4. Can be achieved anytime in any National/International/WMC format.

Wooh! That is some achievement.

So if Omkar memorizes every Sudoku puzzle, then its RIP Sudoku? ;-)