Fit Jumps Opener has 5422 Hand 3

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

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

Overcall -- 4+ ♠; 13+ total points

6 ♥ by North

Lead: ♣ 4

Made 7 — NS +1010

Recall 2 ♦ shows four or more clubs, four or more hearts - a transfer fit jump - and game forcing values. Opener's 3 ♥ shows a fit and 12-16 points. This does not change because of west's overcall of 2 ♠. The only change from an uncontested auction is that north may bid 3 ♥ with a hand with a heart fit and only two or three clubs.

Responder now shows some slam interest opposite the 15-16 hands by bidding 3 ♠. Opener's 3 NT is equivalent to a spade cue-bid. The 4 ♣ and 4 ♦ bids are also cues showing first or second round controls.

Key-card reveals all of the key-cards and responder signs off in 6 ♥. Here there is no need to tell partner that we have all of the key-cards as opener is limited with 3 ♥. For a grand we need ♠ AK ♥ Axxx ♦ Ax ♣ Kxxxx or the equivlent hand with the ♦ K rather than the ♠ K. For the small slam we only need the ♣ K and then there are twelve tricks - five clubs, five hearts and two aces. Or with the ♠ K or ♦ K (which are less likey) then we might need the club finesse (for thirteen tricks) or a favourable lead.

Notice what happens if we move the ♠ J to the south hand. Now south on the assumption that north has the ♣ K as well as the three aces shown in the bidding can bid or at least seriously consider bidding the grand slam. South can only count five hearts, five clubs and two aces for twelve tricks. However the vulnerable overcall must mean that west is a favourite to hold both the spade king and queen and also the ♦ K. Then a squeeze will yield the thirteenth trick. Isn't that amazing - you play a squeeze in the bidding.

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