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Dutch Defence Powerbook 2023
The Dutch Defence Powerbook 2023 consists for the greater part of engine games (77 000), to which have been added high value material from Mega and the Correspondence Chess Database (34 000).
The Stonewall Attack in 60 Minutes
The Stonewall Attack (d4 followed by e3 and possibly f4) is an old-fashioned opening, almost forgotten, not thought to give White any advantage at all. Yet it still packs a punch and is not so easy to defend against. It is especially good for club players