In the 1970's, the
partnership of Richard and Rhoda Walsh, John Swanson, and Paul Soloway developed
a variant of Eastern Scientific system that incorporated a “two over one” (2/1)
game forcing response by an unpassed hand (and no interference). The new system
was originally known as Walsh, sometimes referred to as 'Western Roth-Stone'
based on its California origination. Over time, the Walsh system was commonly
referred to as 2/1 Game Force. The original elements of the Eastern
Scientific system included:
1. Strong Notrump
2. Non-forcing Stayman
3. Jacoby Transfers
4. Five card major suit openings
5. Forcing Notrump responses to major suit opening bid
6. Limit raises
7. Two over One responses almost game forcing
8. Preemptive weak two bids
9. Strong artificial 2C opening bid
Bridge professional and
author Richard Pavlicek shares his adaptation of the Eastern Scientific
convention card at his website.
Italian Blue Club,
Standard American Yellow Card (SAYC).