queen sacrifice Najdorf vs L Frenkel, 1926  (B70) Sicilian, Dragon Variation, 20 moves, 1-0 Rook up at endgame Ragozin vs Lisitsin, 1934  (B70) Sicilian, Dragon Variation, 76 moves, 1-0 Nec7+ sacrifice L Steiner vs C G M Watson, 1936 (B70) Sicilian, Dragon Variation, 26 moves, 1-0 2 bishops at endgame Chekhover vs Bastrikov, 1938 (B70) Sicilian, Dragon Variation, 38 moves, 1-0 removing white bishop at the board P Michel vs B Koch, 1938 (B70) Sicilian, Dragon Variation, 40 moves, 1-0 a piece up E Rojahn vs E Rotunno, 1939 (B72) Sicilian, Dragon, 29 moves, 1-0 Bg5 M Stolberg vs Chekhover, 1940 (B70) Sicilian, Dragon Variation, 45 moves, 1-0 7 games