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. Kf1/6...Qe7/7. Nxh8/7...d5/8. exd5/8...Nd4/9. d6
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Traxler Variation rd bd kd nl pd pd pd qd pd pd pl nd pd bl nd pl pl pl pl bd pl pl rl nl bl ql kl rl Two Knights Defence
9. d6
Taking with 9...cxd6 blocks Black's queen in and White can safely play 10. Kxf2. Thus 9...Qxd6 is the stronger move.
Traxler Variation