Nimzo-Indian Powerbook 2022

The Nimzo-Indian Powerbook 2022 is based on 320 000 games from the Engine Room and a good 36 000 played by human beings, coming to a total of over 356 000 games. The threshold for players is Elo 2450, but generally speaking the average is in the 2550-2600 range. Thus the Powerbook also offers reliable statistics in deep sub-variations. The move 4.e3 still accounts for the greatest number of games. The position in the following diagram is then very frequently reached:

Now the older 7...Nc6 can lay claim to very good statistics, but if one goes deeper into the tree structure White just manages to get an edge in some branches. But the alternative 7...dxc4 8.Bxc4, and then either 8...Nbd7 or 8...cxd4 should reliably provide a level game.