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King's Indian Powerbook 2021
Top class material was used for the King’s Indian Powerbook 2021: over 100 000games from the Mega and from correspondence chess, and in addition more than 264 000 games from the engine room of playchess.com, in all 372 000 games.
King’s Indian Powerbase 2021
King’s Indian Powerbase 2021 is a database and contains a total of 11092 games from Mega 2021 or the Correspondence Database 2020, of which 839 are annotated.