Fit Jumps Opener has 5422 Hand 16

Board 16 North Deals	♠ 8 7 ♥ A K 6 5 ♦ A 10 8 7 3 ♣ A 6
♠ J 6 5 3 ♥ J 8 2 ♦ 4 2 ♣ K Q 8 4	N W E S	♠ K Q 9 4 2 ♥ 10 9 ♦ 9 5 ♣ 10 9 7 2
	♠ A 10 ♥ Q 7 4 3 ♦ K Q J 6 ♣ J 5 3

West	North	East	South
	1 ♦	Pass	2 ♥
Pass	3 ♥	Pass	3 ♠
Pass	4 ♣	Pass	4 ♦
Pass	4 ♥	Pass	4 NT
Pass	5 ♣	Pass	6 ♥
All pass

6 ♥ by South

Lead: ♣ K

Made 6 — NS +980

Notice the comparison between this north hand and the last one. With aces and an ace-king this hand screens out for a suit contract.

After the fit-jump is raised south with prime cards but a minimum makes the mild slam try. North accepts and denies a spade control and shows a club control with 4 ♣. South reflects for some mental simulation (and stimulation). Giving north perfect cards we imagine ♠ xx ♥ AKxx ♦ Axxxx ♣ Ax. There are a few imperfections possible for example should north have the ♠ Q. Again however hands with ♠ Qx and a club control are going to be candidates for a 1 NT opening. So we can be fairly confident f the simulated hand. The only real variation is that south could have ♣ K and at least one jack.

South could probably justify 4 NT here counting five hearts (with a ruff), five diamonds, the ♠ A and the ♣ K (at worst on a finesse). However with the shown return cue of 4 ♦ it is now north's job to simulate.

Let's start by giving south perfect cards - ♠ Axx ♥ Qxxx ♦ KQxx ♣ xx. South has shown more than this but slam is cold opposite this much. If we remove two of these cards, say change the ♠ A to the ♠ K and remove the ♥ Q. And we would have to add five points in clubs (or spades but not the ace) - ♠ Kxx ♥ Jxxx ♦ KQxx ♣ Ax would be a mild slam try and slam would be poor.

North could bid 5 ♥ rather than the 4 ♥ shown. Then south with a nice minimum would go on to the excellent slam.

Otherwise in the auction shown south still moves based on the mental simulations described earlier.

Fit Jumps Opener has 5422 Hand 15

Board 15 North Deals	♠ A K 9 8 ♥ K 3 ♦ Q J 7 6 3 ♣ K 8
♠ 6 4 ♥ A Q J 9 7 4 2 ♦ 9 5 ♣ 7 4	N W E S	♠ Q 7 3 ♥ 6 5 ♦ 8 2 ♣ Q J 10 9 3 2
	♠ J 10 5 2 ♥ 10 8 ♦ A K 10 4 ♣ A 6 5

West	North	East	South
	1 ♦	Pass	2 ♠
Pass	3 ♠	Pass	4 ♠
All pass

4 ♠ by South

Lead: ♦ 9

Made 5 — NS +450

I have shown south signing off in 4 ♠. However that is possibly too pessimistic with top cards - ♦ AK and ♣ A. From south's perspective a hand like ♠ AKQx ♥ Ax ♦ Qxxxx ♣ xx would have play for slam.

It is all moot here as with king-small in both short suits north would probably open 1 NT in the real world.

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Fit Jumps Opener has 5422 Hand 14

Board 14 North Deals None Vul	♠ K Q J 10 ♥ A 8 ♦ A Q 10 6 5 ♣ 8 3
♠ 8 6 5 ♥ 10 6 2 ♦ 9 4 2 ♣ Q 7 5 2	N W E S	♠ 9 3 ♥ Q J 7 5 3 ♦ 8 ♣ A 10 9 6 4
	♠ A 7 4 2 ♥ K 9 4 ♦ K J 7 3 ♣ K J

West	North	East	South
	1 ♦	Pass	2 ♠
Pass	3 ♠	Pass	3 NT
Pass	4 ♦	Pass	4 ♥
Pass	4 NT	Pass	5 ♣
Pass	6 ♠	All pass

6 ♠ by South

Lead: ♣ 2

Made 6 — NS +980

South has an easy mild slam try after the fit jump is raised. North has extras and cooperates with 4 ♦ denying the club control. South can fairly accurately place north's cards now - ♠ KQxx ♥ Ax ♦ AQxxx ♣ xx. One of the queens could be replaced with the ♣ Q. If the ♥ A was replaced with two queens then the hand looks more like a 1 NT opening. There are some other variations with extra jacks where the hand might not bee as suitable as the one shown.

Shown here south cooperates then moves over 4 ♠ by north. Its not completely clear that north would bid 4 ♠. The hand has 16 prime points. Moreover north knows south has ♥ K (or singleton) and a club control - ace or king or singleton or void - and enough values to be interested in slam. Say both of those kings then there is still room for ♠ A and ♦ K to justify 3 NT and slam can hardly be worse than the ♣ A onside and it might be better.

North can take control with 4 NT and bid 6 ♠ opposite one key-card. Notice how since the ♣ K is guarded the slam is cold as a club can be pitched on the long diamond if necessary because clubs have not been led.q

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Fit Jumps Opener has 5422 Hand 13

Board 13 North Deals None Vul	♠ 9 3 ♥ K 8 7 2 ♦ A K J 8 2 ♣ A 7
♠ K J 7 5 4 2 ♥ J 3 ♦ 9 ♣ 6 5 4 3	N W E S	♠ A Q 10 8 ♥ 9 5 ♦ 10 7 4 ♣ Q 10 9 8
	♠ 6 ♥ A Q 10 6 4 ♦ Q 6 5 3 ♣ K J 2

West	North	East	South
	1 ♦	Pass	2 ♥
Pass	3 ♥	Pass	3 NT
Pass	4 ♣	Pass	4 NT
Pass	5 ♦	Pass	6 ♥
All pass

6 ♥ by South

Lead: ♦ 9

Made 7 — NS +1010

While south has only 12 hcp the fifth heart and singleton spade make slam more likely. Here for example we have slam opposite ♠ xxx ♥ Kxxx ♦ AKxx ♣ Ax, which is only 14 hcp. Having said that these hands with a shortage are a problem for the system after the three of a major raise as there is no unambiguous way to show the shortage.

Here though opener shows extra values with 4 ♣ and more importantly denies a spade control. That lack of wastage in spades really encourages south.

North can hardly have something like ♠ Qx ♥ Kxxx ♦ Axxxx ♣ AQ as that would be a strong candidate for a 1 NT opening. Therefore we should takeaway one of those queens and replace it with the ♦ K. It is pretty much impossible to imagine a hand here where slam is not a big favourite.

Just for safety we bid 4 NT and then stop in six when one key-card is missing.

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Fit Jumps Opener has 5422 Hand 12

Board 12 North Deals	♠ Q J 7 4 ♥ A Q ♦ K 8 ♣ A J 8 5 2
♠ 3 ♥ J 10 7 5 2 ♦ Q 10 9 6 5 ♣ 10 4	N W E S	♠ A K 10 6 ♥ 9 4 3 ♦ 7 4 3 2 ♣ 6 3
	♠ 9 8 5 2 ♥ K 8 6 ♦ A J ♣ K Q 9 7

West	North	East	South
	1 ♣	Pass	2 ♥
Pass	3 ♠	Pass	3 NT
Pass	4 ♣	Pass	4 ♦
Pass	4 ♥	Pass	4 ♠
All pass

4 ♠ by North

Lead: ♥ 3

Made 4 — NS +420

Actually I would recommend opening 1 NT with the north hand with so many values in the short suits. Then there is absolutely no danger of getting past 4 ♠.

Also looking at the 3 NT bid from south, we need ♠ AQJx ♥ Ax ♦ Qx ♣ Axxxx or the equivalent for slam to have a play. Even there there is the chance of a club ruff if the spade finesse loses. So the 3 NT bid shown reallly is marginal.

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Fit Jumps Opener has 5422 Hand 11

Board 11 North Deals	♠ Q 9 3 2 ♥ A 6 ♦ K 9 8 3 2 ♣ A Q
♠ J ♥ J 9 7 5 2 ♦ 10 6 5 4 ♣ K 9 8	N W E S	♠ K 8 7 5 ♥ K 8 3 ♦ — ♣ J 10 7 5 4 3
	♠ A 10 6 4 ♥ Q 10 4 ♦ A Q J 7 ♣ 6 2

West	North	East	South
	1 ♦	Pass	2 ♠
Pass	3 ♠	Pass	3 NT
Pass	4 ♣	Pass	4 ♦
Pass	4 ♥	Pass	4 ♠
All pass

4 ♠ by South

Lead: ♠ J

Made 6 — NS +480

Yet again after the fit jump and raise we have a hand with mostly working cards. South needs north to have something like ♠ KQxx ♥ Kx ♦ Kxxxx ♣ Axx for slam to have a play. North has extras so cooperates twice.

After south signs off, north could take another bid with only the ♣ Q potentially bad. But south has nothing extra.

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