User:Maurit~enwiki

Mauritian Twos

These are weak hands — 5-10 HCP or a bad 11 HCP (W200#24N) — 5+ cards in one suit, 4+ cards in another suit, with 8 losers or fewer.

• They are for opening bids, not for overcalls or responses.
• Prefer to open at the 1-level if you can — e.g. with 10 HCP and two 5-card suits, giving you two length points.
• If you have 6 cards in a major, prefer to open a Weak Two.
• If you have 7 cards in a suit, prefer to open with a 3-level pre-empt, unless you have 4+ cards and a stopper in another suit.'. (F200#2N)
• The majority of your HCP should be in your two suits, but don't give up if they aren't. (C201#32N) .
• The three bids that comprise Mauritian Twos are:
  • 2: 9+ cards in two suits, of which hearts is a 4-5 card suit.
  • 2: 9+ cards in two suits, of which spades is a 4-5 card suit. The other suit is a minor.
  • 2NT: At least 5-4 in the minors. (F200#1S)

• With a 0-4-5-4 shape in --♦-♣, bid 2 in preference to 2NT. (C201#27S)

Advice for subsequent bidding

• Partners should remember to deduct a loser with a 9+ card fit. (F200#34E)

Responses to Mauritian 2

• Pass: 0-12 HCP, 8 losers or more, 2-5 hearts, and 0-3 spades. (C201#7N, C201#18W, F200#8W, F200#15W, F200#22S, C200#12E, C200#16E, C200#18N, W200#7N, W200#19N, T20#6E, T20#9E, T20#12S)
• 2: 0-3 hearts and 4+ spades, 0-12 HCP. (NF) (C201#4E, C201#16N, C201#25S, F200#6N, C200#24E, C200#31W, C200#32S, C200#36S, W200#24N, W200#36N, T20#16N, T20#13E)
• 2NT: 14+ HCP, asks opener to bid his second suit, unless it is spades, when opener should rebid 3. (C201#34N, F200#2N, F200#5W, F200#33N, C200#8S, C200#6S, C200#26W)
• 3♣: 13-14 HCP. Pass or correct if opener's second suit is a minor. If opener's second suit is spades, bid 3. (C201#27S, C200#24S)
• 3♦: three hearts and 13+ HCP, game-invitational if opener has five hearts. (F)
• 3: 7 losers, 4+ heart support, game-invitational. (W200#16W, C201#2N, F200#7W)
• 4: 6 losers, 4+ heart support. (W200#15N)

Opener's Rebid after 2:2

• Pass: 3+ spades. Possibly pass with 2 spades if 8 HCP or less. (W200#17N, W200#20W, W200#35W, C200#32S)
• 3m: Opener should bid his other suit if 0-2 spades. (C201#4E, C201#16N, C201#29N, C200#36S, W200#31E, W200#36N)

Responder's Rebid after 2:2, 3m

• Bid 3 with 3-card support. (W200#36N, T20#16N, F200#6N)
• Bid 3 with 6+ spades and 0-2 card support for hearts.

Opener's Rebid after 2:2NT

• Opener bids his second suit, unless it is spades, when opener rebids 3. (C201#34N, C200#6S)

Responder's Rebid after 2:2NT, 3m

• Responder can rebid 3NT with all other suits stopped and 14+ HCP. (C200#6S, F200#2N, F200#5W, F200#14N, F200#33N)
• Bid game-invitational 3 with three hearts and 15-16 HCP. (C200#8S)
• Bid 4 with 6 losers and 4+ card heart support.

Responder's Rebid after 2:2NT, 3

• Bid 4 with 19 HCP and three excellent hearts (A-K-Q). (F200#28S)

Opener's Rebid after 2:3♦

• 3: minimum
• 3: maximum, stopped spade suit.

Opener's Rebid after 2:3

• Pass on 8 losers.
• Bid 4 on 7 losers or fewer, or with 5 hearts.

Responses to Mauritian 2

• Pass: 3+ spades, 0-12 HCP (C201#2W, C201#35E, C200#4S, C200#15N, C200#17N, C200#24W, W200#1E, W200#1W, W200#5N, W200#5S, W200#20E, F200#28W, F200#35E, T20#2S, T20#3S), or two spades and 10-12 HCP (C201#3W, F200#32E).
• 2NT: 11+ HCP, asks opener to bid his minor. (W200#22E, F200#34E)
• 3♣: Pass or correct to 3♦. (T20#16E, W200#36S)
• 3♦: Diamonds and hearts, 7-14 HCP, 0-2 spades. (C201#25W, C201#29S, C200#32N, W200#31W)
• 3: 6+ heart suit, 0-2 spades (NF). (C200#11N, W200#2S, W200#14N)
• 3: 13+ HCP, precisely 7 losers, 4+ spade support, game-invitational. ( )
• 4: 6 losers, 4+ spade support. ( )

Opener's Rebid after 2:2NT

• 3♣: 4+ clubs. (C201#18S)
• 3♦: 4+ diamonds. (F200#34E)

Opener's Rebid after 2:3♣

• Bid 3♦ if 0-2 clubs. (W200#36S).

Responder's Rebid after 2:3♣, 3♦

• Bid 3 with two-card support. (W200#36S)

Opener's Rebid after 2:3♦

• Rebid 3 with 5 spades. (C200#35N)
• Bid 3 with 3 hearts. (F200#9W)

Opener's Rebid after 2:3

• Pass on 8 losers.
• Bid 4 on 7 losers or fewer, or with 5 spades.

Responses to Mauritian 2NT

• 3♣: equal length minors or longer/better clubs, 0-8 HCP. (T20#14W, C200#15E, C200#20N, C200#22E, F200#29E, W200#27W)
• 3♦: longer/better diamonds, 0-8 HCP. (C201#26E, C200#13E, C200#22W, W200#16S)

Critical Hands for Mauritian Twos

• T20#6E : 2NT is better than 2.
• T20#9E : 2 is better than 2.
• W200#31W: 3♣ is the least worst contract.
• F200#3W : 2 is fine, but it cannot be found after a 2 opening.
• F200#33N : 25 HCP and everything stopped but 3NT goes down two.

Sources

• http://glenfieldbridgeclub.org.uk/GlenfieldTechnique/Lucas.htm
• http://members.shaw.ca/conventions/modm.htm
• http://en.wikipedia.org/wiki/Muiderberg_convention
• http://www.bridge-wiese.de/konvent/Lucas.htm
• http://www.bridgebum.com/muiderberg_two_bids.php

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