411 REFERENCE · Wikibooks
Chess Opening Theory/1. e4/1...e5/2. Nf3/2...Nc6/3. Bb5/3...a6/4. Ba4/4...Nf6/5. O-O/5...Nxe4/6. d4/6...b5
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
Open Spanish Open Spanish
6...b5
Black ends White's pressure on the c6 knight.
7. Bb3 is necessary to save the bishop and the typical, automatic move.
From time to time some bright spark will wheel out 7. d5?!, the Richter variation, which can entrap Black if they avoid trading knight for bishop.
7. Nxe5!?, the Friess attack, can lead to a number of trades and an equal position. 7...Nxe5 8. dxe5 bxa4 9. Qd5 Rb8 10. Qxe4.
Theory table
7. Bb3 d5 8. dxe5 Be6 9. Nbd2 Open Spanish + 7. d5?! Ne7 8. Re1 bxa4 9. Rxe4 d6 - Richter variation 7. ... ... 8. ... Nc5? 9. Nxe5! bxa4?? 10. Qf3 f6? 11. Qh5+ +++ 7...bxa4 8. dxc6 d6 9. Re1 f5! - 7. Nxe5 Nxe5 8. dxe5 bxa4 9. Qd5 Rb8 10. Qxe4 Freiss attack
References
See also
Ruy Lopez