From Wikipedia, the free encyclopedia
- This article uses algebraic notation to describe chess moves.
In chess, B03 is the ECO code for the Alekhine's Defense 3.d4 chess opening. The game begins 1 e4 Nf6 2.e5 Nd5 3.d4 and usually proceeds in one of two schemes. The Exchange Variation continues 3...d6 4.c4 Nb6 exd6. White has some space advantage. Black can capitalize on the half-open center with ...g6, ...Bg7 with ...Bg4 eventually. Play could proceed with the Four Pawns Attack 3...d6 4.c4 Nb6 5.f4. White has a somewhat larger space advantage though the center is not fixed. Black has a number of options. Black can play ...Qd7 w/...0-0-0 & ...f6 putting pressure on White's d pawn. Black can play ...Nb4 w/...c5 hoping to exchange the d pawn. Finally, Black can play ...Be7 w/...0-0 & ...f6 attacking the center. Minor variations include O'Sullivan's Gambit: 3...b5 (has a +2=1-2 score in Chess Assistant 8.0) and 3...d6 4.Bc4, Balogh Variation.
[edit] External links
