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A 66-page PDF with a bidding-tree of the whole system as played by Eric Greco and Geoff Hampson during most their career. The system is a professional implementation of Standard Modern Precision (SMP), with the main change that 1C-1H denies 5+S and 1C-1S is 5+S 8+ HCP, the most frequent variation from classic SMP.
The modern writeup downloadable PDF of what pros and clients play when they play precision, in Chinese language finally.
Symmetric relay system with Meckwell tendencies, played by one of the most successful Dutch pairs in history, Simon de Wijs and Bauke Muller.