411 REFERENCE · Wikibooks
Chess Opening Theory/1. e4/1...e5/2. Nf3/2...Nc6/3. Bc4/3...Nf6/4. Ng5/4...Bc5/5. Nxf7/5...Bxf2/6. Kxf2/6...Nxe4/7. Ke3/7...Qh4/8. g3/8...Nxg3/9. hxg3/9...Qd4/10. Kf3/10...O-O
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Traxler Variation rd bd rd kd pd pd pd pd nl pd pd nd pd bl qd kl pl pl pl pl pl rl nl bl ql rl Two Knights Defence
10... O-O
White must play 11. Rh4 to prevent d5 and Black's numerous checkmate threats.
Traxler Variation