[cencio]

---

[smerriman]

1♦ - 1♠ - 2♠ - 4NT - 5♥ (2 without queen) - 5♠ seems like what I'd do.

[Cyberyeti]

Easy to realise you're missing ♠KQ, particularly if your opening style is such that N's diamond suit need not be that good.

I would duplicate smerriman's auction except with another round of bidding between 2♠ and 4N to confirm partner actually had the 4th spade.

Trickier is where N's hand is xxxx, Axx, AQJxx, Q and you DO want to bid the slam in diamonds or NT but 5♠ may fail if the trumps don't break.

[Tramticket]

 pescetom, on 2018-May-10, 05:43, said:

this is a splinter hand for me.

Really? You are prepared to commit to game opposite a typical 5 / 6 count response? I feel that this is a massive over-bid.

A 2♠ rebid is more than enough.

[apollo1201]

 pescetom, on 2018-May-10, 05:43, said:

1♦ - 1♠ - 4♣ - 4NT - 5♥ - 5♠
Much the same as others, but this is a splinter hand for me.

North lacks at least an ace (and another goodie) to splinter. It commits to game opposite a partner who can have as low as 5-6 HCPs.

[bravejason]

 Cyberyeti, on 2018-May-09, 05:17, said:

...

I would duplicate smerriman's auction except with another round of bidding between 2♠ and 4N to confirm partner actually had the 4th spade.

...

How do check on the 4th spade?

[Cyberyeti]

 bravejason, on 2018-May-10, 07:12, said:

How do check on the 4th spade?

Invent a 3♣ bid, partner may well bid 3N with the 3451 version of his actual hand.

[pescetom]

 Tramticket, on 2018-May-10, 06:03, said:

Really? You are prepared to commit to game opposite a typical 5 / 6 count response? I feel that this is a massive over-bid.

A 2♠ rebid is more than enough.

Quite right of course, sorry I remembered the hand wrongly.

[apollo1201]

 Tramticket, on 2018-May-10, 06:03, said:

Really? You are prepared to commit to game opposite a typical 5 / 6 count response? I feel that this is a massive over-bid.

A 2♠ rebid is more than enough.

Damn, we made the same comment at the same time. When I logged in yours wasn’t published yet😮

[smerriman]

 Cyberyeti, on 2018-May-10, 07:58, said:

Invent a 3♣ bid, partner may well bid 3N with the 3451 version of his actual hand.

Good point about a 3 card raise - though if partner did bid 3NT, what then? Must still be a decent chance of slam.

[Cyberyeti]

 smerriman, on 2018-May-10, 14:36, said:

Good point about a 3 card raise - though if partner did bid 3NT, what then? Must still be a decent chance of slam.

I can bid 4♦ which partner will know is 3 or 4N quantitative.