Jassem: A NEW modern version of Polish Club
There are two main approaches to bidding:
1. oriented to distribution, which gives priority to showing suits over showing strength; an example may be Acol or Sayc.
2. oriented to strength, which prefer to estimate the total strength as soon as possible; an example may be Precision.
Polish Club takes the best of both: you very soon find your fit and can estimate the total strength at the same time. And surprise, surprise: you discover that bidding with that ”red-marked” system is much more natural than with any system regarded as green or blue.