One of the most common questions from new bridge players: "Should I open this hand?" The decision seems simple — just count your points, right? But even with 13 HCP, some hands should pass, while some 11-point hands scream to be opened.
This guide will teach you the standard opening requirements, how to handle borderline cases, and when experience says to bend the rules.
The Standard Rule: 12+ Points
The basic requirement to open the bidding at the one-level is straightforward:
Standard Opening Requirements:
- 12-13+ high card points
- A biddable suit (usually 4+ cards, 5+ for majors in some systems)
- No extreme distributional weakness
With 12 HCP and a decent suit, open. With 11 or fewer, pass. That's the foundation — simple and effective for beginners.
Clear Opening Hands
Some hands are obvious opens. Here are examples where you should confidently bid:
♠ AK73 ♥ Q84 ♦ KJ5 ♣ 962
13 HCP. Open 1♠ (some play 1♣ with 4-4 in the blacks).
♠ 93 ♥ AKJ84 ♦ K72 ♣ Q63
14 HCP, nice 5-card major. Open 1♥.
♠ AQ ♥ KJ7 ♦ Q1084 ♣ AJ52
16 HCP, balanced. Too strong for 1NT (15-17), so open 1♦.
The Rule of 20
For borderline hands (11-12 HCP), use the Rule of 20 to decide:
Rule of 20:
Add your HCP to the length of your two longest suits.
If the total is 20 or more, open.
Example: 11 HCP + 5 spades + 4 hearts = 20. Open 1♠.
This rule helps you open distributional hands that play better than their point count suggests:
♠ AQJ93 ♥ K1074 ♦ 85 ♣ 62
11 HCP. 11 + 5 + 4 = 20. Open 1♠.
♠ K73 ♥ AJ4 ♦ Q85 ♣ J962
11 HCP. 11 + 4 + 4 = 19. Pass (flat hand, no long suits).
When NOT to Open
Even with 12-13 points, some hands are better passed:
Pass These 12-Point Hands:
- 4-3-3-3 shape with scattered honors — No good rebid
- 12 HCP with all jacks and queens, no aces — Soft values
- Weak suit quality — Your longest suit is xxx or worse
Example: Pass this 12-count
♠ KJ7 ♥ Q84 ♦ QJ3 ♣ J952
Flat shape, no aces, soft honors. Many experts pass.
Third and Fourth Seat Considerations
Your position at the table affects opening decisions:
Third Seat (Light Opens)
After two passes, you can be more aggressive. Why?
- Partner is a passed hand (limited strength)
- You want to suggest a lead to partner
- You're not worried about getting too high
Third seat light opening:
♠ KQJ94 ♥ 73 ♦ 952 ♣ A83
10 HCP. In third seat, open 1♠ to suggest a lead.
Fourth Seat (Rule of 15)
In fourth seat (after three passes), use the Rule of 15:
Rule of 15:
Add your HCP to your number of spades.
If the total is 15 or more, open. Otherwise, pass out the hand.
Why spades? Because if you're borderline, you want spade length to compete effectively.
Special Opening Bids
1NT Opening (15-17 HCP)
The 1NT opening is very specific:
- Exactly 15, 16, or 17 HCP (some play 16-18)
- Balanced shape: 4-3-3-3, 4-4-3-2, or 5-3-3-2
- No singleton or void
- Stoppers in all suits (preferred but not required)
Weak Two Bids (2♦/2♥/2♠)
Weak twos show:
- 6-11 HCP
- Exactly 6 cards in the bid suit
- Two of the top three honors (AKxxxx, AQxxxx, or KQxxxx)
Classic weak 2♥:
♠ 84 ♥ KQJ973 ♦ 952 ♣ 63
8 HCP, great 6-card suit. Open 2♥.
Practice Decisions
Test yourself on these borderline hands:
♠ AJ1093 ♥ K74 ♦ 85 ♣ Q62
Answer: 11 HCP. Rule of 20: 11 + 5 + 3 = 19. Close, but most pass. In third seat, open 1♠.
♠ KQ7 ♥ AJ3 ♦ Q1084 ♣ J52
Answer: 13 HCP but flat 4-3-3-3. Borderline. Most open 1♦, but it's close.
♠ 3 ♥ AKJ1094 ♦ Q73 ♣ 852
Answer: 11 HCP, 6-card suit. Open 1♥ (too strong for weak 2♥, which tops out at 11).
Common Mistakes
Avoid These Errors:
- Opening all 12-counts — Shape and quality matter!
- Passing all 11-counts — Rule of 20 can guide you to open good shapes
- Opening 1NT with 18 points — That's too strong (unless playing 16-18 range)
- Weak two with 5 cards — Needs exactly 6
- Weak two with 12+ points — Open at the one-level instead
The Bottom Line
Opening decisions get easier with experience, but stick to these guidelines as a beginner:
- 12+ HCP = open (with rare exceptions for terrible shape)
- Use Rule of 20 for 11-12 HCP borderline hands
- Be more aggressive in third seat
- Use Rule of 15 in fourth seat
- When in doubt, open — Passing good hands costs more than opening borderline ones
Practice Opening Decisions with Brian
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