Ioannis Simeonidis (1975) is a Greek FIDE Master and FIDE Trainer. He is a contributor to New In Chess Yearbook, the world’s leading publication on chess opening news. Simeonidis i...ver maisIoannis Simeonidis (1975) is a Greek FIDE Master and FIDE Trainer. He is a contributor to New In Chess Yearbook, the world’s leading publication on chess opening news. Simeonidis is the inventor of a recent new system in the Sicilian (the line 2.Nc3 d6 3.d4!?), also played by Magnus Carlsen.ver menos