411 REFERENCE · Wikibooks
Chess Opening Theory/1. e4/1...e5/2. d4/2...exd4/3. c3/3...dxc3/4. bxc3
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Danish gambit Centre game → Danish gambit accepted
4. bxc3?
An error. White forgets why the sacrifice was offered in the first place: by retaking with a pawn, White does not develop their pieces in compensation for the sacrifice, and is left with weak and isolated a- and c-pawns to boot.
Black should have an easy game.