411 REFERENCE · Wikibooks
Chess Opening Theory/1. e4/1...e5/2. Nf3/2...Nc6/3. Bc4/3...Nf6/4. Ng5/4...d5/5. exd5/5...Na5/6. Bb5/6...c6/7. dxc6/7...bxc6/8. Qf3/8...cxb5
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
8...cxb5!?
Black sacrifices the exchange in return for a lead in development. The resulting position is extremely sharp, with many forced moves for both sides. Engine analysis has shown that Black enjoys full compensation for the exchange.
White's only good move is 9.Qxa8, capturing the rook.