Hippopotamus Defence

The Hippopotamus Defence is a name for various irregular chess opening systems in which Black moves a number of his pawns to the third rank, often developing his pieces to the second rank, and does not move any of his pawns to the fourth rank in the opening.

Hippopotamus Defence

The Hippopotamus Defence is a name for various irregular chess opening systems in which Black moves a number of his pawns to the third rank, often developing his pieces to the second rank, and does not move any of his pawns to the fourth rank in the opening.