This post is on hand evaluatioon using fitshowing jumps and Robson/Segal scheme.
I know there are many other overcalling/responding schemes, but I would like to focus on this one in this post, Thanks !!
Pard made an overcall.
As advancer, I have more ore less 4 choices:
- 3♦= fitshowing jump (FSJ) raise to 3 spades. This raise shows less than invitational values, either a mixed or preeemptive raise, with values concentrated in the 2 suits
- 4♦= FSJ to 4 spades. This raise commits to game, either on power, distribution or preempt, with values concentrated in the 2 suits
- 2NT= this shows a limit+ hand with 4+ trumps, high ODR.
- 3 clubs = a jump cue shows a mixed raise (9 losers) with sparse values
At the table, feeling "excited" to try the new FSJ feature, I bid 4 diamonds, leading to 4 spades doubled, which made with luck and help from opps.
With hindsight I am trying to reconsider te hand to see what would be a better call:
in my view the hand is too strong for a 3 diamonds FSJ, since it has 7.5 losers, so it is too strong for any call that promises only a mixed raise.
I would still bid 4 diamonds opposite an opening hand (e.g. if using fit showing raise when my pard opens 1 spades and opps overcall), but admittedly, since pard made only an overcall and may have well have more than 7 losers, my 7.5 losers hand (maybe 8 losers, since the finesse to the H king is bound to fail) may not be enough to force game.
That leaves 2NT: if I bid 2NT, I promiuse more or less 10+ hcp with 4 trumps, invitational values (8 losers).
Here I have only 9 hcp but still the hand should be evaluated as invitational opposite a full opener.
Bidding 2Nt also avoids another flaw in bidding a FSJ here: a FSJ tends to promise values concentrated in thge 2 suits, with little wasted outside.
Here, I have AQ stiff in hearts, 70% of my hcp, outside of my 2 suits !
So, sitting calmly at my desk, out of the heat of the batle, I would say that 2NT is probably the most reasonable bid.
Comments from people using Robson/Segal scheme ?

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(1♣)-1♠-pass-?