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Chess Opening Theory/1. a3/1...e5
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Anderssen's Opening rd nd bd qd kd bd nd rd pd pd pd pd pd pd pd pd pl pl pl pl pl pl pl pl rl nl bl ql kl bl nl rl A00 Anderssen's Opening
1...e5
1...e5 is a common, sound response, establishing control over the center after White's passive opening.
A curious variation is the Creepy Crawly Formation: Classical Defence.
Additionally, White may choose to relinquish future hope for winning the game with the Hippopotamus Attack, a stampede of one-square pawn moves.
Theory table
all Creepy Crawly Formation: Classical Defense 2. h3 d5 3. c4 c6 4. cxd5 cxd5 5. d3 Nc6 - Hippopotamus Attack 2. b3 d5 3. c3 Nf6 4. d3 Nc6 5. e3 Bd6 6. f3 O-O 7. g3 --
See also