[lycier]

Hand-1

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Note that 3♦ says " Splinter --- 3+♣,1-♦,4+♠,21-hcp,19-22TPs."

Hand-2

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Here 4♦ says " Splinter --- 3+♣,1-♦,4+♠,21-hcp,19-22TPs."

Very interesting, 3♦ is same with 4♦.
I am a beginner, I only know there are two sort of difinitions.
First , its definition based on HCP :
3♦= Splinter raise with 14-17hcp.
4♦= Splinter raise with 18+hcp.

Second, its definition mainly based on ♦ count :
3♦= Splinter raise with 14-17hcp, singleton in ♦
4♦= Splinter raise with 18+hcp, voidness in ♦

Now I think it is just time for Gib experts to tell us what choice they would like to make.

[TylerE]

1. I have an obvious below-game cuebid. So I make it.
2. Obvioisly this is a bug, but i think your 3♦=14-17 splinter is just nullo and hopeless. Way to get to the 3 level with no play opposite a misfitting 6 count with wastage in your shortness.

[Stephen Tu]

TylerE, on 2016-June-15, 11:10, said:

2. Obvioisly this is a bug, but i think your 3♦=14-17 splinter is just nullo and hopeless. Way to get to the 3 level with no play opposite a misfitting 6 count with wastage in your shortness.

So, you are advocating that say 15 hcp with a stiff just bids 1m-1M-2M, then, same as a 12 hcp 4333? That seems to me to be a way to miss a lot of icy games.

Bidding is an inexact science. Sure mini-spl may occasionally fail at 3 level, but bidding 2 only will miss a lot of games when partner doesn't have enough to invite. Before mini-spl, people routinely jump raised to 3, and still do so on hands where a non-gf spl isn't available. I think if you want to argue against mini-spl, advocating for some other possibly better use of the bid is a better argument than saying that going down opposite min with wastage is the main concern.

[iandayre]

In most partnerships I simply haven't used the double-jump splinter. But here is one treatment using both.

Single-jump splinter is EITHER 1) A mini-splinter-will accept a signoff at three of our suit OR 2) A maximum splinter that would have to think about bidding again after a signoff otherwise. Here if partner is willing to stay out of game opposite the mini,you generally can skip the slam try and just bid game.

Double-jump splinter is in-between. A game force but not a maximum.

[lycier]

TylerE, on 2016-June-15, 11:10, said:

2. Obvioisly this is a bug, but i think your 3♦=14-17 splinter is just nullo and hopeless. Way to get to the 3 level with no play opposite a misfitting 6 count with wastage in your shortness.

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This hand is from " 2016 Senior USBC-Segment 1 of 6".

[johnu]

lycier, on 2016-June-20, 01:43, said:

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This hand is from " 2016 Senior USBC-Segment 1 of 6".

This is not remotely close to the question being discussed. A jump to 3♣ or 3♦ would have shown a suit and are jumps, but not jump reverses.

[johnu]

TylerE, on 2016-June-15, 11:10, said:

2. Obvioisly this is a bug, but i think your 3♦=14-17 splinter is just nullo and hopeless. Way to get to the 3 level with no play opposite a misfitting 6 count with wastage in your shortness.

This would have to be considered standard expert practice if you believe a poll(s),

http://bridgewinners...s-jump-reverse/

A clear majority play this as a non-game force splinter bid.

So with an unbalanced 17 count, you would just raise 1 of a major to 2??? Playing strong NT's, you would raise on 4 trumps and a flat 11+ to 14, or a minimum unbalanced hand with 3 trump and shortness. Partner will pass without pause with a flattish 10-11 count or less. You will miss too many games when opener has an unbalanced good hand.

[TylerE]

Theere's a big difference between an unbalanced 17 (or 16) and an unbalanced 14.