11. Ng4 Bxg4 12. Bxg4 Bc5 13. 0-0 e3 14. Bf3 exf2+ 15. Kh1 0-0 J E Jones vs G Sanguinetti, 2000 (C59) Two Knights, 33 moves, 0-1 11. Ng4 Bxg4 12. Bxg4 Bc5 13. 0-0 e3 14. Bf3 exf2+ 15. Kh1 0-0 H Rosenfeld vs Marshall, 1909  (C59) Two Knights, 42 moves, 0-1 11. Ng4 Bxg4 12. Bxg4 Bc5 13. 0-0 0-0 14. Be2 Qe5 P Sedlacek vs K Kitson, 2004 (C59) Two Knights, 24 moves, 0-1 11. Ng4 Bxg4 12. Bxg4 Bc5 13. 0-0 0-0 14. Be2 Rad8 E Sheripov vs M Panchanathan, 2001  (C59) Two Knights, 46 moves, 0-1 11. Ng4 Bxg4 12. Bxg4 Bd6 L Kritz vs Rozentalis, 2000 (C59) Two Knights, 31 moves, 0-1 11. Ng4 Bc5 12. Nxf6+ Qxf6 M Coimbra vs I Van Steenwinckel, 1994 (C59) Two Knights, 28 moves, 1-0 11. Ng4 Bc5 12. c3 T Kobe vs A Ulmanis, 1992 (C59) Two Knights, 40 moves, 0-1 11. f4 Bc5 12. Rf1 Be7 J Klemm vs F Staiger, 1995 (C59) Two Knights, 36 moves, 0-1 11. f4 Bc5 12. Rf1 Bd6 13. c3 Qb6 14. Qa4 Y Estrin vs V Leonidov, 1972 (C59) Two Knights, 36 moves, 1/2-1/2 11. f4 Bc5 12. Rf1 Bd6 13. c3 Qb6 14. b4 S Kosmo vs S Barth Stanford, 2006 (C59) Two Knights, 60 moves, 1/2-1/2 11. f4 Bc5 12. Rf1 Qd8 13. d4 Bb6 Ragozin vs Geller, 1949  (C59) Two Knights, 40 moves, 0-1 11. f4 Bc5 12. Rf1 Qd8 13. c3 Bb6 14. b4 Nb7 15. Nxc6 Qc7 S Kriventsov vs J Becerra Rivero, 2006  (C59) Two Knights, 36 moves, 1/2-1/2 11. f4 Bc5 12. Rf1 Qd8 13. c3 Bb6 14. b4 Nb7 15. Nxc6 Qc7 T Wolski vs I Ivanov, 1990 (C59) Two Knights, 45 moves, 1-0 11. f4 Bc5 12. Rf1 Qd8 13. c3 Bb6 14. b4 Nb7 15. Nxc6 Qc7 E Michelsen vs Kupchik, 1915  (C59) Two Knights, 37 moves, 0-1 11. f4 Bc5 12. Rf1 Qd6 13. c3 Nd5 Georg Constantakis vs Rainer Hansel, 1999  (C59) Two Knights, 42 moves, 0-1 11. f4 Bc5 12. Rf1 Qd6 13. c3 Nb7 N Schuetze vs W Pajeken, 2008 (C59) Two Knights, 44 moves, 0-1 11. f4 Bc5 12. Rf1 Qd6 13. c3 Nb7 I Kaula vs T Dornbusch, 1992 (C59) Two Knights, 44 moves, 0-1 the improvement of 15. b4 with the losing 19 Kb2? 19. d3 +- Fomenko vs L Radchenko, 1967  (C59) Two Knights, 25 moves, 0-1 R Kuczynski vs Naiditsch, 2008 (C55) Two Knights Defense, 24 moves, 0-1 C Vinas Guerrero vs G Goldsztejn, 2008 (C55) Two Knights Defense, 22 moves, 0-1 Radjabov vs Karjakin, 2009  (C55) Two Knights Defense, 67 moves, 1-0 I Efimov vs Shirov, 1991  (C57) Two Knights, 15 moves, 0-1 Short vs Kasparov, 2011  (C58) Two Knights, 41 moves, 0-1 23 games