Hippopotamus Defense

Hippopotamus Defense is a chess opening with the ECO code B00. It goes 1. e4 Nh6. White opens with 1. e4 (the king's pawn) and Black answers 1... Nh6. After 2 moves it is White to move. The lesson on the board explains every move of the line and lets you play it yourself; it is free.

The moves

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