Spiral Raises

OK there are many different versions of this convention, but one thing is for sure, if you are raising on 3 card support after you open 1m and your partner responds 1M, then having a forcing asking big is crucial.

1m - 1H
2H - 2S* Asks partner what kind of raise do you have? then...

2N = Balanced 3 card raise, minimum
3C = Balanced 4 card raise, any strength
3D = unbalanced 3 card raise, shortness in other minor
3H = unbalanced 3 card raise, shortness in other major
3S = Splinter, 4 card support
3N = Balanced 3 card raise, maximum
4om = splinter
4m = 5422 MAX
4H = 5422 MIN

1m - 1S
2S - 2NT = same
3C = BAL 3S MIN
3D = BAL 4S ANY
3H = UNBAL 3S shortness in other minor
3S = UNBAL 3S shortness in other major
3N = BAL 3S MAX
4x = SPL
4m = 5422 MAX
4M = 5422 MIN


This system can also be used after 1H-1S-2S.

NOTE: After BAL 3M MIN, going back to 3 of partners minor is NF
NOTE: After any response, 3M is NF

Also its good to play 1x-1H-2H-2NT = 4S 4H forcing... so you can catch your spade fit when partner has raised on 3 card support.