Lionel convention

Lionel is a contract bridge bidding convention used in defense against an opposing 1NT openings. Using Lionel, over a 1NT opening of the opponents:

  • a double is conventional and denotes spades and a lower suit (4-4 or longer),
  • a 2♣/2♦ overcall denotes hearts and the suit bid (4-4 or longer), and
  • a 2♥/2♠ overcalls is natural.

Any of the overcalls denote high-card strength corresponding to 12+ (or good 11) high card points.

The convention is named after Lionel Wright from New Zealand who published it in the International Popular Bridge Monthly magazine of May 1993.[1]

Responses

Following the Lionel double, the partner of the double responds as follows:

(1NT) - dbl - (pass) - ??

pass = 10+ hcp, all subsequent doubles for penalty
2♣ = pass-or-correct bid (doubler to pass or bid second suit)
2♦ = Non-forcing, diamond length (typically 5+) with heart tolerance. Doubler can bid 2♥ with hearts as second suit and less than two diamonds.
2♥ = Natural, non-forcing
2♠ = Weak Raise
2NT = Invitational spade raise without a singleton side suit
3♣/♦/♥ = Invitational spade raise with singleton or void in bid suit
3♠ = preemptive raise

After a minor suit Lionel overcall, the responses are straightforward. For instance:

(1NT) - 2♣ - (pass) - ??

Pass = to play
2♦ = to play
2♥ = weak raise
2♠ = to play
2NT = invitational heart raise
3♣ = preemptive
3♥ = preemptive

Advantages/disadvantages

Like using Brozel, CoCa or DONT, using Lionel has the consequence of losing the penalty double over opponent's 1NT. Although this is often seen as a loss, Lionel Wright argued that this loss turns into an advantage as it opens the possibility to defend 1NT doubled with split points between you and your partner. As a balanced holding of the majority of points is far more likely to occur than holding the majority of points in an imbalanced way, a conventional non-penalty double over 1NT holds the potential of paying-off on many hands. Also, non-penalty doubles are more difficult to deal with than traditional business doubles.[2]

gollark: You wouldn't download a bread.
gollark: Πλω™.
gollark: hmm, what if SCP-5000?
gollark: Shortest possible version:
gollark: 478798120650670091.

See also

References
  1. Lionel Wright, Lionel in Action, International Popular Bridge Monthly, Vol. 19, No. 5 (May 1993).
  2. Chris Ryall's page on 1NT defenses


This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.