- This article has been written in order to provide an introduction to MOSSO, highlighting the areas that are significantly different from 2/1. I didn't want to make the article too long, but I've tried to provide enough information for people to try out the system. I realize that more detail would be required for a serious partnership.
- In particular, I've said nothing about handling intervention, although I'm happy to write a follow-up article on this topic if there is sufficient interest. I am also willing to provide further information on particular sequences.
- So, does MOSSO work? So far I've only played the system for a few months, but much of my 2-3 years experience of SWIFT carries across to MOSSO. The new MOSSO sequences seem to work well in practice and overall results so far have been encouraging.
- What about the opening 2 bids? For nearly two years I kept records of the SWIFT 2 bids. The SWIFT 2♠ opening led to only a very small gain on balance and the significant number of poor results was one factor in the move to MOSSO. The SWIFT 2♣, 2♦ and 2♥ openings all showed a healthy profit. Partnerships therefore need not feel nervous about using these three intermediate opening bids.
- It is probably impossible to design a system based around unlimited 1-level opening bids that doesn't possess a number of quirks. There are several in MOSSO (e.g. opening 1♣ with a balanced 12-14 points with 5 hearts), but these don't seem to cause significant problems. MOSSO has a number of advantages over natural systems such as 2/1, such as being able to play in 1NT with 18-20 balanced opposite a weak hand (via the sequence 1♣-1♦-1NT). Also, constructive bidding is often easier in MOSSO because some NF 2/1 sequences become F1R in MOSSO and some F1R sequences in 2/1 become GF in MOSSO.
- MOSSO has been developed as a serious bidding system, but it's also fun to play. Why not give it a try?
See Granville - Introduction to MOSSO.
Text Colour Conventions (see disclaimer)
- Blue: Text by me; © Theo Todman, 2019
- Mauve: Text by correspondent(s) or other author(s); © the author(s)