Chess Opening Theory/1. b3/1...e5/2. Bb2/2...Nc6/3. d4

The Scientist's Method
a b c d e f g h 8 8 7 7 6 6 5 5 4 4 3 3 2 2 1 1 a b c d e f g h
Position in Forsyth-Edwards Notation (FEN) r1bqkbnr/pppp1ppp/2n5/4p3/3P4/1P6/PBP1PPPP/RN1QKBNR b
Moves: 1. b3 e5 2. Bb2 Nc6 3. d4

The Scientist's Method

3. d4

This move has the main goal - to change the pieces and bring the queen to the center field, black cannot reject the sacrificed pawn due to the loss of advantage.

Theory table

For explanation of theory tables, see theory table and for notation, see algebraic notation..

1. b3 e5 2. Bb2 Nc6 3. d4
	3	4	5
Accept: Classical Variation	... exd4	Bxd4 Nxd4	Qxd4 d5
Accept: Modern Variation	... exd4	Nf3 Bb4+
Accept: Horse Variation	... Nxd4	Bxd4 exd4	Qxd4 d5
Accept: The Queen's Counterattack	... exd4	Bxd4 Nxd4	Qxd4 Qf6
Declined: Classical Variation	... d6	dxe5 dxe5	Qxd8+ Kxd8
Declined: Modern Variation	... d6	d5 Ne7