21 Nc4-d6! begins combo with White pieces advancing with tempo Tartakower vs Schlechter, 1909   (C30) King's Gambit Declined, 33 moves, 1-0 Dr. Lasker's pieces charge forward with threats 10 consec moves M Porges vs Lasker, 1896   (C67) Ruy Lopez, 33 moves, 0-1 31 Nd4-f3! gains time on g5-queen to reinforce pin on f7-rook Leko vs Mamedyarov, 2008  (C95) Ruy Lopez, Closed, Breyer, 30 moves, 1-0 3 games