Bird Opening: Horsefly Defense is a chess opening with the ECO code A02, part of the Bird Opening family. It goes 1. f4 Nh6. White opens with 1. f4 (Bird's move) 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
1. f4 – White plays the pawn to f4
1... Nh6 – Black plays the knight to h6
About the Bird Opening
White starts with 1.f4, controlling e5. It is like a Dutch Defense with colours reversed and leads to kingside play.
White often plays Nf3, e3, b3 and Bb2 to control e5 strongly.
From's Gambit 1...e5 is a dangerous reply; know it before you play 1.f4.
The e1-h4 diagonal is weak, so watch for ...Qh4+ and ...Bg3 ideas.
chessGM