Korchnoi vs Panov, 1953  (A12) English with b3, 67 moves, 0-1 Karpov vs Gulko, 1996  (D27) Queen's Gambit Accepted, Classical, 42 moves, 1-0 Ravn's legacy P Ravn vs Petrosian, 1958  (A55) Old Indian, Main line, 32 moves, 1/2-1/2