; De-creasing order of complexity <> Aces Scientific extended Zass A relay precision – modified from Viking Precision German language only <> Precision – SUPER MUTOS Multi and ransfer riented ystem) <> Aces Scientific standard Precision – standard The version is used for teaching by Oliver Clarke in BBO-Beginner/Intermediate Lounge Matchpoint Precision Precision by Terence Reese UTRopia Universal Transfer Responses This is a structure for responding in any natural system Vienna Club Wei/Radin Precision <> Oranje Club Dutch text translated into english <> Fiori Torino The complete Stayman system <>
