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Chess Opening Theory/1. e4/1...a6/2. d4/2...b5/3. Nf3/3...Bb7/4. Bd3

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St. George Defence
a b c d e f g h
8a8 black rookb8 black knightc8 black kingd8 black queene8 black kingf8 black bishopg8 black knighth8 black rook8
7a7 black kingb7 black bishopc7 black pawnd7 black pawne7 black pawnf7 black pawng7 black pawnh7 black pawn7
6a6 black pawnb6 black kingc6 black kingd6 black kinge6 black kingf6 black kingg6 black kingh6 black king6
5a5 black kingb5 black pawnc5 black kingd5 black kinge5 black kingf5 black kingg5 black kingh5 black king5
4a4 black kingb4 black kingc4 black kingd4 white pawne4 white pawnf4 black kingg4 black kingh4 black king4
3a3 black kingb3 black kingc3 black kingd3 white bishope3 black kingf3 white knightg3 black kingh3 black king3
2a2 white pawnb2 white pawnc2 white pawnd2 black kinge2 black kingf2 white pawng2 white pawnh2 white pawn2
1a1 white rookb1 white knightc1 white bishopd1 white queene1 white kingf1 black kingg1 black kingh1 white rook1
a b c d e f g h
Position in Forsyth-Edwards Notation (FEN)

rn1qkbnr/1bpppppp/p7/1p6/3PP3/3B1N2/PPP2PPP/RNBQK2R b

Moves: 1. e4 a6 2. d4 b5 3. Nf3 Bb7 4. Bd3

St. George Defence

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At that point, Black will usually play e6 and Nf6 in any order.

4...Nf6 adds up pressure and forces 5. Qe2 (5. e5 would free the bishop line of fire).

4...e6 builds Black pawn center and takes control of key squares.

Theory table

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

'1.e4 a6 2.d4 b5 3.Nf3 Bb7 4.Bd3'

4
...
e6		 =
...
Nf6		 =

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References

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Wikipedia has related information at St. George Defence

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