## The Symmetric Relay

The Symmetric Relay is a relay Precision bidding system. The only forcing bids are relays, usually the cheapest bid. Most other bids are standard Precision. The relay bidding uses some tables (below) which can be used in a variety of situations, and even more than once in the same bidding sequence. These tables add some "symmetry" to the system, and are useful in memorizing the system. Here is a brief description of the entire system (bids not shown are mostly standard Precision):

 1C 16+ 1D Neg. (0-7 or 0-9 balanced or less than 2 controls) 1H 19+, relay 1S 2nd neg (0-4 or 0 controls) other 2 steps up from positive response 1M 4+ card suit relay cheapest bid 1NT 4+S, 2-suiter table 2C 4+C, 2-suiter table 2D 4+D and 5+ in first suit, 2-suiter table 2H reverser=4 in first suit and 5+D, 2-suiter table other 1-suiter table 1NT Flat table (4333 or 4332) 2m 5+ card suit, 1-suiter table 2H 5+C and 4D, 2-suiter table 2S 5-5 or longer in minors, long 2-suiter table 1D Nebulous, 11-15 1H Natural or GF relay 1S 4S and minor or black 3-suiter 2C relay 2D 3-suiter table, high shortage 2H 2-suiter table with C 2S 3-suiter table, low shortage 2NT 2-suiter table with D, zoom into 2-suiter table. 1NT 4H and minor or red 3-suiter 2C relay, same as above 2C 5+C and 4D, 2S=relay: 2-suiter table 2D 4C and 5+D, 2S=relay: 2-suiter table 2H 1S and 3H, bad hand 2S 5-5 or longer minors 1M 11-15, 5+ card suit 1NT GF relay, same as 1C-1M-relay except that 2H shows other major instead of "reverser" (as a 5+ card suit was shown) 1NT 12-15 balanced, maybe 5-card major, maybe 5-card minor and two doubletons 2D GF relay Stayman (see Intro to Relays - A 2D Relay Stayman) 2m 6+ card suit relay cheapest bid, 1-suiter table 2H 5-5 or longer table in majors

Besides the above (and the GF relay Stayman), we have five important tables.

Here is the 1-suiter table ("high shortage" means that the highest ranked of the three remaining suits is the short suit):

 2S high shortage 2NT middle shortage 3C equal shortage (7222 or 6322) 3D low shortage, zoom (5332) 3H low shortage, 6331 3S low shortage, 7330 3NT low shortage, 7321

These tables show specific bids instead of step-1, step-2, etc. That feature of the tables is the "symmetric" part of the system. Once we are in the 1-suiter table, 3H will be a low shortage (or other shortage already shown) with 6331 regardless of the previous sequence of bids (except after a negative response to 1C when all tables are two steps up). And the table is reuseable in the same bidding sequence. 3H directly shows "low shortage, 6331," while 2S-2NT(r)-3H shows "high shortage 6331," and 2NT-3C(r)-3H shows "middle shortage 6331;" 3H shows the same shape (6331) in all of these sequences of bids. This "symmetric" feature makes memorization easier. There is nothing particularly magical about this, the table was just rearranged somewhat to make this possible. Some of the other tables (below) also have this "symmetric" feature.

Further relays show shape reusing the above table, and then the exact distribution using the numeric principle (see Intro to Relays - A 2D Relay Stayman).

The 2-suiter table:

 2H reverser, 4 in 1st suit, 5+ in 2nd suit 2S 5-5 or longer 2NT high shortage 3C equal shortage 3D low shortage, zoom (5431) 3H low shortage, 6421 3S low shortage, 7420 3NT low shortage, 6430

Here is the 3-suiter table, which does specify steps instead of specific bids. Two long suits are already known:

 step1 high shortage step2 low shortage, 4441 step3 low shortage, 5440, zoom (long in high suit) step4 low shortage, 5440, long in middle suit step5 low shortage, 5440, long in low suit

5-5 or longer table

 3C high shortage 3D equal shortage (6511) 3H low shortage, zoom (5521) 3S low shortage, 6520 3NT low shortage, 5530

And the flat (4333 or 4432) table:

 2D 4-4, same colors or 4333 long major. After 2H relay, 2S=4333 or zoom (doubleton naturally) with 4-4 2H 4-4, same rank (major or minor), same as above 2S 4333, long minor 2NT 4-4, same shape (pointy or round tops), zoom (doubleton naturally)

Notice that the above table is not typical of this system, as you show the doubleton using the natural principle (Intro to Relays - A 2D Relay Stayman) instead of the numeric principle. For consistency, I would prefer the numeric principle.

After the next relay, show number of controls not already shown, and then Denial Cuebids to show where the controls are.

Other relay systems (Moscito, the Ultimate Club, and a few Weak Opening Systems) use "symmetric relays." They use tables much like the above.