EOG is both a Double Check Mate and a Complex Mate (4pc)! F A Hoffmann vs A Petrov, 1844  (C53) Giuoco Piano, 20 moves, 0-1 Miniature as a Complex Mate with King in the Center! J Blake vs G Hooke, 1891  (C41) Philidor Defense, 12 moves, 1-0 23...Kg8 24.Bb3+ Qd5 25. Bxd5# Two attackers are En Prise! Showalter vs Pillsbury, 1897  (C67) Ruy Lopez, 23 moves, 1-0 Four SYMMETRICAL pieces coordinate for the mate. S S Dodge vs J Houghteling, 1905  (D08) Queen's Gambit Declined, Albin Counter Gambit, 16 moves, 0-1 Continues 15. ... Kf6 16. Nh5# Complex with four pieces. H Borochow vs J L McCudden, 1918  (C41) Philidor Defense, 15 moves, 1-0 EOG is Complex Mate with four pieces. V Vukovic vs S Deutsch, 1920  (C65) Ruy Lopez, Berlin Defense, 18 moves, 1-0 39...Ke1 40 Qg3+ Ke2 41 Bd3# or 39. Ke3 40. Qf3# A Bannik vs Korchnoi, 1954  (B02) Alekhine's Defense, 39 moves, 1-0 M17 from Stockfish 16 ends with a Complex Mate on the edge. L Day vs A Kafadarow, 1976 (B20) Sicilian, 35 moves, 1-0 EOG is a Complex Mate (with redundant Knight). J A Campbell vs M Kennefick, 1976  (A45) Queen's Pawn Game, 14 moves, 0-1 Miniature game with Complex Mate after demolishing Castle wall. G Garcia vs B Zuckerman, 1986  (B93) Sicilian, Najdorf, 6.f4, 25 moves, 1-0 SF 16 says M5 is best, but its M3 gives a Complex Mate. T Oral vs G Vescovi, 1995  (B22) Sicilian, Alapin, 23 moves, 1-0 M14 by SF 16-- King is mated near the Center. A Graf vs I Novikov, 1999 (B23) Sicilian, Closed, 44 moves, 0-1 24...Kf7 25. Ne5# Complex Mate with four pieces involved. Damljanovic vs D Lima, 2002  (A18) English, Mikenas-Carls, 24 moves, 1-0 FIVE pieces coordinate WITH SYMMETRY for the mate! NN vs M Wahlund, 2007  (C07) French, Tarrasch, 18 moves, 1-0 Complex Mate is pending as seen in M9 from Stockfish 16. M Socko vs N Batsiashvili, 2014  (C59) Two Knights, 71 moves, 0-1 EOG is the Complex Mate pattern. G Grasser vs L Winokur, 2014  (D03) Torre Attack (Tartakower Variation), 36 moves, 1-0 16 games