Too Powerful to Pre-empt
August 4, 2017
Even Poor Hands Deserve Good Play
August 10, 2017

The Rule of 80%


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Play

If you’re 80 percent sure of what the final contract will be then just go ahead and bid it. Good enough! Every bit of description you give to your partner, you give to your opponents as well. Extra bidding will just let the opposition know how to defend and, in particular, what to lead.

49 Comments

  1. graeme says:

    Go the #ruleof80percent !


    Bidding System: 5 card majors, strong notrump, weak twos.
    Auction
    W N E S
    – 1 P 2
    P 2 P 3N
    P P P

  2. dlash says:

    If you don’t bid the Cs (like I did the 1st time), you get a Club lead and contract makes 1. If you do, you get a D lead and contract goes down -1.
    Bidding System: 5 card majors, strong notrump, weak twos, transfers.
    Auction
    W N E S
    – 1 P 2
    P 2 P 3N
    P P P

  3. rahamrick says:

    I had the same result as dlash — except if you go after the spades rather than the hearts, you can make 3 nt.
    Bidding System: 5 card majors, strong notrump, weak twos.
    Auction
    W N E S
    – 1 P 2
    P 2 P 3
    P 3N P P
    P

  4. Bid 4 hearts & made.
    Bidding System: 4 card majors, weak notrump, strong twos.
    Auction
    W N E S
    – 1 P 2
    P 2 P 3
    P 4 P P
    P

  5. Again bid 3 nt & made 10 tricks.
    Bidding System: 4 card majors, weak notrump, strong twos.
    Auction
    W N E S
    – 1 P 2
    P 2 P 3N
    P P P

  6. unixman says:

    Disappointed in my self really 12 12 I am fairly sure we have so I should just bid it makes 11 tricks the way I played it … Oh and Hello every one from Beautiful Vietnam where I am on holidays it is 35 degrees and sunny 🙂
    Bidding System: 5 card majors, weak notrump, weak twos, transfers.
    Auction
    W N E S
    – 1 P 2
    P 2 P 2N
    P P P

  7. shiningstar says:

    3NT making 10
    Bidding System: 5 card majors, strong notrump, strong twos.
    Auction
    W N E S
    – 1 P 3
    P 3 P 3N
    P P P

  8. russellj says:

    Should have watched the video 1st time around!! 2nd time bid 3NT & made 11 tricks!!!
    Bidding System: 5 card majors, strong notrump, strong twos.
    Auction
    W N E S
    – 1 P 2
    P 2 P 3N
    P P P

  9. alicja says:

    Thanks Graeme for the great lesson.
    Bidding System: 5 card majors, strong notrump, weak twos, transfers.
    Auction
    W N E S
    – 1 P 2
    P 2 P 2N
    P P P

  10. holley says:

    Hard to get 3NT. Took three goes.
    Bidding System: 4 card majors, weak notrump, weak twos, transfers.
    Auction
    W N E S
    – 1 P 2
    P 2 P 3
    P 3N P P
    P

  11. hagleyjazz says:

    Awesome video @graeme. I like the rule of 80% almost as much as the 4NT asking for courage.

  12. suec88 says:

    Fabulous video as always Graeme, was going to bid 3 but whimped out and ended up in 2NT making 10, will have another go and see if i can make 11. What you say makes so much sense.
    Bidding System: 5 card majors, strong notrump, weak twos, transfers.
    Auction
    W N E S
    – 1 P 2
    P 2 P 2N
    P P P

  13. macqueen says:

    great rule
    Bidding System: 4 card majors, weak notrump, weak twos, transfers.
    Auction
    W N E S
    – 1 P 2
    P 2 P 3
    P 3N P P
    P

  14. mariagee says:

    Bid 2NT and made 10

    Bidding System: 4 card majors, weak notrump, weak twos.
    Auction
    W N E S
    – 1 P 2
    P 2 P 2N
    P P P

  15. nelle says:

    3S making 9 tricks.
    Bidding System: 5 card majors, strong notrump, weak twos, transfers.
    Auction
    W N E S
    – 1 P 2
    P 2 P 3
    P P P

  16. catspaw15 says:

    Thanks @Graeme for the lesson – you explained that very well.
    Bidding System: 4 card majors, weak notrump, strong twos.
    Auction
    W N E S
    – 1 P 2
    P 2 P 3N
    P P P

  17. Well, that’s a good start to the day, 3 nt made 11. 1/1179.
    Bidding System: 4 card majors, strong notrump, strong twos.
    Auction
    W N E S
    – 1 P 2
    P 2 P 3N
    P P P

  18. wadkin37 says:

    wadkin37 @ Graeme You’re so imaginative! (and so right, too) I bid the club suit and gave away the hand. What I had in mind was the
    suggestion that the stronger hand should bid the NT so that the lead comes into that hand…so I gave Partner the
    opportunity to bid the NT. Your instant 80% rule makes much better sense. Thank you!
    Bidding System: 5 card majors, strong notrump, weak twos, transfers.
    Auction
    W N E S
    – 1 P 2
    P 2 P 3
    P 3N P P
    P

  19. AgnesMin25 says:

    Thanks Graeme – great vid as ever – I too whimped out at 2NT – cos of those diamonds – but made 10.
    Bidding System: 5 card majors, strong notrump, strong twos.
    Auction
    W N E S
    – 1 P 2
    P 2 P 2N
    P P P

  20. rita928 says:

    Once again followed the prompt. I was tempted to bid 3N, but followed the hint, left the bid at 2N and made 10!
    Bidding System: 5 card majors, strong notrump, weak twos, transfers.
    Auction
    W N E S
    – 1 P 2
    P 2 P 2N
    P P P

  21. Can’t open the video. Made 3 NT.
    Bidding System: 5 card majors, strong notrump, weak twos, transfers.
    Auction
    W N E S
    – 1 P 2
    P 2 P 2N
    P P P

  22. nevillet says:

    The first time I played it in 2NT, my partner left me hanging, and made three. However, after reading that others had played it in 3NT and made five, I tried it and could not make more than our bid…
    Bidding System: 5 card majors, strong notrump, weak twos, transfers.
    Auction
    W N E S
    – 1 P 2
    P 2 P 3
    P 3N P P
    P

  23. redsquirrel says:

    I kept away from bidding 3C but bid 2NT expecting partner with 13 points to put to 3NT – didn’t happen sadly, made 11 tricks. Club was led which I won in hand played JS to clear the A, won the next club played towards 10H to clear that ace, leaving 2 aces in dummy to get access. Lovely to play just in wrong contract!
    Bidding System: 4 card majors, weak notrump, strong twos.
    Auction
    W N E S
    – 1 P 2
    P 2 P 2N
    P P P

  24. marsbar29 says:

    Bid 3nt made 10
    Bidding System: 5 card majors, strong notrump, weak twos, transfers.
    Auction
    W N E S
    – 1 P 2
    P 2 P 3N
    P P P

  25. suzie says:

    Second try I bid 3NT, made 11; all worked out so well!

    Bidding System: 5 card majors, strong notrump, strong twos.
    Auction
    W N E S
    – 1 P 2
    P 2 P 3N
    P P P

  26. Graeme I agree with the 80% rule and its sibling “If you know the right thing thing to do, do it , don’t let partner make a mistake when you can prevent him from making it.”
    PS Have you being taking lessons from fisher and schwartz on claiming tricks as you made ten not eleven tricks.
    Bidding System: 4 card majors, weak notrump, weak twos, transfers.
    Auction
    W N E S
    – 1 P 2
    P 2 P 3N
    P P P

  27. lesorcan says:

    Hey, All, Good thoughts for Rocky25 as he enters the hospital for serious surgery. Regards, Les
    Bidding System: 4 card majors, strong notrump, weak twos, transfers.
    Auction
    W N E S
    – 1 P 2
    P 2 P 2N
    P P P

  28. halfri says:

    Made 11. The opposition led a club which I took with the king. Drew the spade A won the lead back. Drew the heart A and then won the rest. The only tricky part was making sure I could get back to the top hand to play out the spades.
    Bidding System: 5 card majors, strong notrump, weak twos, transfers.
    Auction
    W N E S
    – 1 P 2
    P 2 P 3N
    P P P

  29. mcfluff says:

    Nice hand 3NT 11 tricks courtesy of leaving spades till last!
    Bidding System: 4 card majors, weak notrump, weak twos.
    Auction
    W N E S
    – 1 P 2
    P 2 P 3N
    P P P

  30. 32dwemce says:

    I enjoyed your lesson Graeme, thank you, I eventually made 11 tricks in 3nt, took a while but I got there eventually.
    Bidding System: 5 card majors, weak notrump, weak twos, transfers.
    Auction
    W N E S
    – 1 P 2N
    P P P

  31. johna says:

    Followed the advice and bid 2 NT but my instincts were to bid 3NT taking a chance on D. Made 11 tricks comfortably.
    Bidding System: 5 card majors, strong notrump, weak twos, transfers.
    Auction
    W N E S
    – 1 P 2
    P 2 P 2N
    P P P

  32. 4 hearts. Took 11 tricks first try. Now I’ll try NT
    Bidding System: 5 card majors, strong notrump, strong twos, transfers.
    Auction
    W N E S
    – 1 P 2
    P 2 P 3
    P 4 P P
    P

  33. jch1 says:

    Played 3nt and made 11 after first trying 3spades
    Bidding System: 5 card majors, strong notrump, weak twos, transfers.
    Auction
    W N E S
    – 1 P 2
    P 2 P 3N
    P P P

  34. lolli9 says:

    @Graeme, played this hand about four times and found it a very good learning hand. I finally figured to get both spade and heart aces in early, so the diamonds didn’t get me later and I made 11. I find NT tough to deal with for some reason. Thanks for all the help you guys give us.
    Bidding System: 5 card majors, strong notrump, strong twos.
    Auction
    W N E S
    – 1 P 2
    P 2 P 3N
    P P P

  35. Hello@rocky25, I’ve just read you’re going for surgery. This message is to hope for a speedy recovery & to wish you well!
    This from a colleague at Sky Bridge Club…..good luck!

  36. jbrown says:

    I love the black felt pen. Vey clear to understand.Great video
    Thank you.

  37. gringo says:

    I really learn so much from your videos Felt pen great

  38. helen says:

    @graeme I don’t think I’ve ever burst out laughing at the end of a bridge lesson, but your punch-line made me do just that! And I knew perfectly well it was one of your own inventions, but it still hit me from below (to quote Bob Dylan). OK,, now let’s inscribe the Tuffnell Rule of 80% in the Bridge Hall of Fame alongside Blackwood, LIghtner et al.

  39. ankemeny says:

    I guess you can try to swindle the opponents in 3NT and get lucky when the leader has short diamonds and long clubs. But 4H looks cold for NS on this deal, via 1S-2H-3C-3H-4H. South knows there is only a doubleton opposite because north did not raise 2H to 3H immediately. 3NT from north is very courageous after 1S-2H-3C, having only Ax in the unbid suit. North should prefer to bid 3H over 3C with the useful 109 doubleton. South can see the diamond weakness and the strong hearts figure to play OK in 4H with the 5-2 fit.

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