Structure 7G69 by Richard Pavlicek
Dual Range Splinter Bids
In a Nutshell
A problem with normal splinter responses to major-suit openings is the point range is too wide; i.e., responder can have a minimum game-force or extra values. By using a relay structure, it is possible to show two ranges of splinters and a balanced (non-splinter) forcing raise, all below four of openers major. Another advantage of this structure is that when opener has no slam interest whatever, responders splinter will remain hidden from the opponents.
The following responses to a major opening show trump support. Single raise shows 3+ trumps; all other raises show 4+ trumps. Note that point ranges are shown by dummy points; hence a 13-15 splinter raise would typically have 10-12 HCP.
3 M + 1 step
3 M + 2 steps
3 M + 3 steps
3 M + 4 steps
11-12 (good 10); I
13-15; unknown splinter
16-18; non-4th-step splinter
13-15; no splinter
16-18; natural splinter
After a 1-step raise, opener may relay with the cheapest bid to locate the splinter, which is shown naturally except a bid of 4 in the trump suit indicates the unshowable splinter.
After a 2-step raise, opener may relay then the two possible splinters are shown by Astro-like relation: 4 = , 4 = , 4 = .
After a 3-step raise, opener may relay as an all-purpose slam try.
© 2013 Richard Pavlicek