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Sistema Colle

2 • Schachpolyglott5 •
  1. Georges Koltanowski - Pedro Cherta Clos
  2. Edgar Colle (?) - Max Euwe (?)
  1. Schachpolyglott5

Sistema Zukertort

1 • Schachpolyglott5 •
  1. Kapitel 1
  1. Schachpolyglott5