Battambang Opening
Position after 1.Nc3 e5 2.a3
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| Moves | 1. Nc3 e5 2. a3 | ||||||||||||||||||||||||||||||||||||||||||||
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| ECO | A00 | ||||||||||||||||||||||||||||||||||||||||||||
| Named after | Battambang, Cambodia | ||||||||||||||||||||||||||||||||||||||||||||
| Parent | Van Geet Opening | ||||||||||||||||||||||||||||||||||||||||||||
The Battambang Opening or Battambang Variation is a chess opening for White, starting with the following moves: 1: Nc3, e5 2: a3.
Strategic intent
The move 2.a3 is a prophylactic response to the 1...e5 line of the Van Geet Opening. Its primary function is to prevent Black from playing 2...Bb4, which would pin the knight on c3 to the king. By neutralizing this tactical option, White maintains the mobility of the knight and avoids the doubled pawns or central pressure typically associated with the reversed Nimzowitsch Defence.[1]
Secondary objectives include preparing for queenside expansion with b4. This allows for transpositions into the Sokolsky Opening (1.b4) or the Polish Defense reversed, but with the white knight already developed. While the move does not contribute to central development or control, it is used to move the game into non-theoretical positions where standard opening preparation is less applicable.[2]
Theoretical lines
Analysis of the Battambang focuses on Black's central reactions.
2... d5
This is the statistically most common response. Black occupies the center with a pawn. White generally continues with 3.d4, transposing the game into a variation of the Queen's Pawn Game where the move a3 prevents later bishop pins on the queenside.[3]
2... Nf6
A flexible development move. White has several options, including 3.e4, transposing to a Vienna Game, or 3.b4, continuing with the flank attack. The inclusion of a3 in these lines serves as a utility move for supporting later queenside pawn majorities.[4]
History and nomenclature
The opening is named after the city of Battambang, Cambodia. It follows the naming convention for 1.Nc3 systems where specific move orders are named after geographical locations, such as the Novosibirsk, or Jalalabad variations.
The system is rare in classical tournament play at the Grandmaster level but is documented in correspondence chess and online databases. Dutch FIDE Master Gert Legemaat is the most frequent recorded practitioner of the variation, with 3 games appearing in major databases.[3]
See also
References
- ^ Schiller, Eric (2003). Unorthodox Chess Openings. Cardoza Publishing. p. 445. ISBN 1-58042-072-9.
- ^ "Van Geet Opening: Battambang Variation". Bookmoves. Retrieved December 31, 2025.
- ^ a b "A00: Battambang opening". 365Chess.com. Retrieved December 31, 2025.
- ^ "Van Geet Opening, Battambang Variation". ChessTempo. Retrieved December 31, 2025.