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Interfering bids - Jump overcall

Question 1 (of 9 on this page)
After a bid of 1 Heart from your Right Hand Opponent (RHO), which of these bids is a jump overcall ?

1. 1 Club
2. 2 Clubs
3. 3 Clubs
4. 4 Clubs

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Question 1 (of 9 on this page)
After a bid of 1 Heart from your Right Hand Opponent (RHO), which of these bids is a jump overcall ?
Answer
3 ). 3 Clubs

A simple overcall is a bid made at the lowest level possible in the desired suit, for example in this case 2 Clubs. A jump overall is at one level higher, in this case 3 Clubs

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Question 2 (of 9 on this page)
After an opening bid of 1 Diamond, what is a bid of 3 Spades ?
1. a preempt
2. a simple overcall
3. a jump overcall
4. a double jump overcall

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Question 2 (of 9 on this page)
After an opening bid of 1 Diamond, what is a bid of 3 Spades ?
Answer
1 . a preempt

Missing out 2 levels (in this case missing out 1 Spade and 2 Spades) in NOT a jump overcall. It's a double jump overcall, and it's a preemptive bid. Quiz 0109 covers these bids.

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Question 3 (of 9 on this page)
How many cards and HCP points do you need to jump overcall in a suit over another suit ?
1. 5 and 16
2. 6 and 6
3. 6 and 10
4. 6 and 12
5. 6 and 16
6. 5 and 16

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Question 3 (of 9 on this page)
How many cards and HCP points do you need to jump overcall in a suit over another suit ?
Answer
4 . 6 and 12

Any jump overcall requires 6 cards, whatever system you use. The standard jump overcall in Acol is the "intermediate jump overcall" which promises an opening hand and a 6-card suit. The best way of looking at it is to count losers, rather than HCP.
"Weak jump overcalls" adopt a totally different approach and promise 6-10 HCP only, as well as a 6-card suit of course. They are very similar to weak twos. You'd better be clear with your partner which system you use. For the rest of this quiz, we assume "intermediate jump overcalls" .

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Question 4 (of 9 on this page)
OK. Let's think about Losing Trick Count. In addition to a 6-card suit, how many losers should your hand contain, at the most, to Jump Overcall a 1 suit opening hand ?
1. 1
2. 2
3. 3
4. 4
5. 5
6. 6
7. 7
8. 8
9. 9
10. 10

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Question 4 (of 9 on this page)
OK. Let's think about Losing Trick Count. In addition to a 6-card suit, how many losers should your hand contain, at the most, to Jump Overcall a 1 suit opening hand ?
Answer
6 . 6

Easy to remember for the dice throwers in our midst! Two sixes. 6+ cards and no fewer than 6 losers. Contrast this with a 7-loser hand required for a simple 2-level overcall, and 8 losers for a simple one level overcall.

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Question 5 (of 9 on this page)
Your LHO opened 1 club, and your partner overcalled 2 Hearts. That's a jump overcall. You have this 8-loser 11-HCP hand

A K Q 9
3 2
10 9 8
J 4 3 2

What should you bid ?
1. 2 Spades
2. 2 NT
3. 3 Clubs
4. 3 Hearts
5. 3 Spades
6. 3 NT
7. 4 Clubs
8. 4 Hearts
9. 4 Spades

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Question 5 (of 9 on this page)
Your LHO opened 1 club, and your partner overcalled 2 Hearts. That's a jump overcall. You have this 8-loser 11-HCP hand

A K Q 9
3 2
10 9 8
J 4 3 2

What should you bid ?
Answer
8 . 4 Hearts

You have a combined LTC total of 14. Given your 8-card Major fit, that's enough for game.

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Question 6 (of 9 on this page)
Your LHO opened 1 club, and your partner overcalled 2 Hearts. That's a jump overcall. You have this 8-loser 11-HCP hand

A K Q 10 9
3
10 9 8
J 4 3 2

What should you bid ?
1. 2 Spades
2. 2 NT
3. 3 Clubs
4. 3 Hearts
5. 3 Spades
6. 3 NT
7. 4 Clubs
8. 4 Hearts
9. 4 Spades

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Question 6 (of 9 on this page)
Your LHO opened 1 club, and your partner overcalled 2 Hearts. That's a jump overcall. You have this 8-loser 11-HCP hand

A K Q 10 9
3
10 9 8
J 4 3 2

What should you bid ?
Answer
1 . 2 Spades

You don't have a fit in Hearts. But you do have a good 5-card suit of your own. With 9+ HCP you can bid it.

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Question 7 (of 9 on this page)
Your RHO opened one Heart. You have this 6-loser 17-HCP hand

A K Q 10 9
3 2
A 3
K J 3 2

What should you bid ?
1. pass
2. double
3. 1 Spade
4. 1 NT
5. 2 Clubs
6. 2 Diamonds
7. 2 Hearts
8. 2 Spades

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Question 7 (of 9 on this page)
Your RHO opened one Heart. You have this 6-loser 17-HCP hand

A K Q 10 9
3 2
A 3
K J 3 2

What should you bid ?
Answer
3 . 1 Spade

Although you have 17 HCP, and you also have fewer than 6-losers, you don't have a 6-CARD SUIT. A simple overcall is required. You can't double and change suit on the next bid either. Why's that ?

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Question 8 (of 9 on this page)
Your RHO opened one Heart. You have this 6-loser 17-HCP hand

A K Q 10 9
3 2
A 3
K J 3 2

Although you have 17 HCP, and you also have fewer than 6-losers, you don't have a 6-CARD SUIT. A simple overcall is required. You can't double and change suit on the next bid either. Why's that ?
1. a Double promises 4441 distribution or close
2. a Double requires 6-cards for a change of suit on the rebid
3. a Double only requires 5-cards on the rebid provided you have 18+HCP
4. all of the above

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Question 8 (of 9 on this page)
Your RHO opened one Heart. You have this 6-loser 17-HCP hand

A K Q 10 9
3 2
A 3
K J 3 2

Although you have 17 HCP, and you also have fewer than 6-losers, you don't have a 6-CARD SUIT. A simple overcall is required. You can't double and change suit on the next bid either. Why's that ?
Answer
4 . all of the above

A Double promises 4441 distribution or close - true. A Double requires 6-cards for a change of suit on the rebid - true. A Double only requires 5-cards on the rebid provided you have 18+HCP - true. With this hand, I would not be too worried about the distribution though. You'll have to give a simple overcall, and somehow show your strength later if your partner shows 9+ points by jumping in response to your double for takeout. . . for example by raising to game !

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Question 9 (of 9 on this page)
Your LHO opened one Heart. Your partner overcalled 2 Hearts.

Whatever does he mean ?
1. He has 6 strong Hearts sitting on top of the enemy Hearts
2. He has 20+ points
3. He has 5 good Spades and 5 good cards in a minor
4. He's confused, or drunk, or both

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Question 9 (of 9 on this page)
Your LHO opened one Heart. Your partner overcalled 2 Hearts.

Whatever does he mean ?
Answer
3 . He has 5 good Spades and 5 good cards in a minor

In the old days, this bid used to mean 20+ points, nothing else. Given opener has 12+, that's quite a rare situation. Much more useful is the 2-suited overcall requiring 8-15 HCP, and that's worth studying and using. (See quiz B 0171, and webpage 171).

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