Borg Defense
What is the Borg Defense?
The Borg Defense is a chess opening that begins with 1. e4 g5. It is classified under ECO A40–B00 and has 5 named variations. Black chooses it with the move g5.
Moves: 1. e4 g5
ECO: A40–B00
Chosen by: Black
Main variations
1. d4 g5
1. e4 g5 2. d4 Bg7
1. e4 g5 2. d4 e5
1. e4 g5 2. d4 h6 3. h4 g4
All 5 variations
| ECO | Variation | Moves |
|---|---|---|
| B00 | Main line | 1. e4 g5 |
| A40 | Borg Gambit | 1. d4 g5 |
| B00 | Borg Gambit | 1. e4 g5 2. d4 Bg7 |
| B00 | Zilbermints Gambit | 1. e4 g5 2. d4 e5 |
| B00 | Troon Gambit | 1. e4 g5 2. d4 h6 3. h4 g4 |
How to learn an opening
Learn the ideas before the moves: where the pieces go, which pawn breaks matter and what the typical middlegame plans are. Then play it, and after each game look up the point where you or your opponent left the known moves. MentoChess shows that point automatically for every game you import.
Opening lessons: Three golden opening rules · Scholar’s mate and how to stop it · Italian Game: plans, not just moves · Answering 1.d4: the Queen’s Gambit Declined · Meeting the Sicilian with 2.c3 · From moves to structures