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43HR - The jump fit -
level 2 ★
A jump shift by the responder’ at level four, after a major opening and the opponent's overcall is a jump fit. This bid requires:
a four-card fit in the partner's major suit,
enough strength to go to game, at least 11HCP
a strong five-card suit with two high honors
Be careful! Don't mistake a splinter for a jump fit. After the opponents' overcall, there can be no splinter...except in the opponents' suit
K
Q
10
5
4
J
7
A
Q
7
3
7
4
S
W
N
E
1
2
4
A
J
9
6
8
5
K
J
10
9
6
4
3
Exercise E4979 4 clubs is a jump fit.
S
W
N
E
1
1
4
4
X
Q
J
4
Q
J
6
5
2
A
K
10
8
4
Exercise E4966 4 diamonds is a jump fit.
Examples of jump fits
In a competitive auction jump fits can sometimes be the decisive factor which allows you:
to continue the bidding up to slam
to punish bold opponents
to go down in a contract very profitably.
A
J
9
6
8
5
K
J
10
9
6
4
3
S
W
N
E
1
2
4
4
4
5
Pass
Pass
5
K
Q
10
5
4
J
7
A
Q
7
3
7
4
Exercise E4980 4 ♣ shows a strong five-card club suit. The opener won't let your opponents win the auction with this splendid double fit in spades and clubs. He knows that the 5 ♥ contract would be made and makes a decidedly profitable sacrificial contract with this excellent double fit
S
W
N
E
1
1
4
4
X
Q
J
4
Q
J
6
5
2
A
K
10
8
4
Exercise E6585 Double!You hold the ♣ , your Partner the ♦ . The hearts are padlocked. Don't gamble on going to 5 hearts. Instead get rich at no risk. Your opponents will lose heavily and you are by no means certain of making 5 hearts.