J2N au naturel
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My partner Jon Wright and I have been playing together, off and on, since 1961. That's not a typo. However, as we get older, our memory has started to go. In particular, we have fumbled artificial continuations of rarely-used conventions, such as Jacoby 2N. To ease the burden on our memory, Jon asked if we might devise a kinder, gentler version of the responses and rebids that would maximize the use of natural bids by opener. We made a start on this project last spring, but now I have completed a version that I think is worth sharing with the other, similarly challenged, players here on bridgewinners.

After 1H-2N                                               After 1S-2N

3 - extras                                                 3 - extras

3 - minimum                                            3 - minimum

3 - 6331, 6322, or 7222, extras              3 - 5=4=2=2 with extras or 5=5=x=x

3 - 4-5-2-2 with extras                            3 - 6322 or 7222 with extras

3N - 15-16 balanced                                   3N - 15-16 balanced

4m - 5 good in the minor                          4m - 5 good in the minor

4 - good trump, minimum, no side A     4 - Exclusion RKC with 6+ trump

4 - Exclusion RKC with 6+ trump             4 - good trump, minimum, no side A

After 1H-2N-3C-3D                                      After 1S-2N-3C-3D

3 - 2=5=2=4 or 2=5=4=2                           3 - short hearts

3 - short spades                                          3 - 5=2=4=2 or 5=2=2=4

3N - 18-19 balanced                                      3N - 18-19 balanced

4m - short in that minor                                4m - short in that minor

4 - good trump, no side A                          4 - Exclusion with 5 trump

4 - Exclusion with 5 trump                          4 - good trump, no side A

After 1H-2N-3D-3H                                        After 1S-2N-3D-3H

3 - short spades                                            3 - 6322 or 7222

3N - 12-14 balanced or 5422                           3N - 12-14 balanced or 5422

4m - short in that minor                                  4m - short in that minor

4 - 6322 or 7222                                           4 - short hearts

After 1H-2N-3H-3S                                          After 1S-2N-3H-3S

3N - 6322                                                         3N - 5=4=2=2 with extras

4m - 6331, short in that minor                          4m - 5=5, short in that minor

4 - 7222                                                          4 - 6=5=1=1

I would also recommend that responder be allowed to skip the relay in order to cue the only side suit in which he has controls, or to bid 3N to deny a side ace when he holds good trump.