Foley Bridge Club 19th October 2012

From Simplex

(Difference between revisions)
 
Line 49: Line 49:
|-
|-
| colspan="4" | '''Notes when South is Dealer:'''
| colspan="4" | '''Notes when South is Dealer:'''
-
# '''P2, P15''': 6-card suit but 7 HCP, so not strong enough to bid at the 1-level.  Note that the diamonds are bid despite the lack of honours in the suit.
+
# '''[[P2]], [[P15]]''': 6-card suit but 7 HCP, so not strong enough to bid at the 1-level.  Note that the diamonds are bid despite the lack of honours in the suit.
-
# '''P8''': Only 8 HCP and no 5+ card suit.
+
# '''[[P8]]''': Only 8 HCP and no 5+ card suit.
-
# '''P16''':  3-card diamond support and 14 HCP.
+
# '''[[P16]]''':  3-card diamond support and 14 HCP.
-
# '''P17''': West's 11 HCP hand could have been opened both 1{{Cs}} and 2{{Cs}}.  But the bids of both North and South have taken those bids away, so normally West should not double.  However, West is two-suited, and had North opened 1{{Ds}} — typically a stronger bid than 2{{Cs}} because of the higher HCP range — West could also have overcalled 1{{Hs}}.  So double is appropriate here.
+
# '''[[P17]]''': West's 11 HCP hand could have been opened both 1{{Cs}} and 2{{Cs}}.  But the bids of both North and South have taken those bids away, so normally West should not double.  However, West is two-suited, and had North opened 1{{Ds}} — typically a stronger bid than 2{{Cs}} because of the higher HCP range — West could also have overcalled 1{{Hs}}.  So double is appropriate here.
# North makes a minimum rebid with 3-9 HCP.  
# North makes a minimum rebid with 3-9 HCP.  
# East bids his cheapest 3+ card suit in response to the double.  His 8 HCP is sufficient.
# East bids his cheapest 3+ card suit in response to the double.  His 8 HCP is sufficient.
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|-
|-
| colspan="4" | '''Notes when South is Dealer:'''
| colspan="4" | '''Notes when South is Dealer:'''
-
# '''P14''': As a test of Simplex's dealer-independence, we examine the bidding when the dealer is South instead of North.
+
# '''[[P14]]''': As a test of Simplex's dealer-independence, we examine the bidding when the dealer is South instead of North.
-
# '''P1''': 14 HCP and a 5-card suit.
+
# '''[[P1]]''': 14 HCP and a 5-card suit.
-
# '''P2''':  6-card suit and 11 HCP.
+
# '''[[P2]]''':  6-card suit and 11 HCP.
-
# '''P2''':  6+ card suit and 7 HCP.
+
# '''[[P2]]''':  6+ card suit and 7 HCP.
# With only two clubs and less than 13 HCP.
# With only two clubs and less than 13 HCP.
-
# '''P16''': 3-card diamond support and 14 HCP.
+
# '''[[P16]]''': 3-card diamond support and 14 HCP.
-
# '''P21''': West has a hand good enough to open at the 1-level, and another 5-card suit he can bid at the 3-level, even though his partner passed.
+
# '''[[P21]]''': West has a hand good enough to open at the 1-level, and another 5-card suit he can bid at the 3-level, even though his partner passed.
# As West has overcalled, North can pass South's 2NT enquiry to show his low point-count.
# As West has overcalled, North can pass South's 2NT enquiry to show his low point-count.
# East has 4-card support for West's five hearts, and is worth about 9 points.  East knows West has at least 8 HCP and at least 11 cards in hearts and clubs, which implies he has at least 6 shortage points.  That makes a minimum total of 23 points between them.  But West could have 8 more HCP — the range for a 1-level bid is 8-16 HCP — so a game bid is a good bet.
# East has 4-card support for West's five hearts, and is worth about 9 points.  East knows West has at least 8 HCP and at least 11 cards in hearts and clubs, which implies he has at least 6 shortage points.  That makes a minimum total of 23 points between them.  But West could have 8 more HCP — the range for a 1-level bid is 8-16 HCP — so a game bid is a good bet.
Line 114: Line 114:
|-
|-
| colspan="4" | '''Notes when West is Dealer:'''
| colspan="4" | '''Notes when West is Dealer:'''
-
# '''P14''': As a test of Simplex's dealer-independence, we examine the bidding when the dealer is South instead of North.
+
# '''[[P14]]''': As a test of Simplex's dealer-independence, we examine the bidding when the dealer is South instead of North.
-
# '''P0, P1, P2, P3''': 11 HCP and a 5+ card suit.
+
# '''[[P0]], [[P1]], [[P2]], [[P3]]''': 11 HCP and a 5+ card suit.
-
# '''P2''':  A 6+ card suit with not enough HCP to overcall at the 1-level.
+
# '''[[P2]]''':  A 6+ card suit with not enough HCP to overcall at the 1-level.
-
# '''P2''':  With 8 HCP and only 2-card support for West, East could have bid 1NT, but North's bid has prevented that.
+
# '''[[P2]]''':  With 8 HCP and only 2-card support for West, East could have bid 1NT, but North's bid has prevented that.
-
# '''P13, P16''': 3-card diamond support and 14 HCP.
+
# '''[[P13]], [[P16]]''': 3-card diamond support and 14 HCP.
# In response to East's 'negative double', West introduces his unbid 4+ card suit.
# In response to East's 'negative double', West introduces his unbid 4+ card suit.
# As West has overcalled, North can pass South's 2NT enquiry to show his low point-count.  But he has seven cards in diamonds, and therefore bids to the Total Trump level of 4{{Ds}}, given South's minimum holding of 3 cards.
# As West has overcalled, North can pass South's 2NT enquiry to show his low point-count.  But he has seven cards in diamonds, and therefore bids to the Total Trump level of 4{{Ds}}, given South's minimum holding of 3 cards.

Current revision as of 09:38, 2 November 2012

Ref: F11#1

Vulnerability: Neither
N
E
S
W
♠ 5 3
♥ A K
♦ T 8 7 6 5 3 2
♣ 4 3
♠ K 7 6 4
♥ Q J 9 2
♦ Q 9 4
♣ T 8
♠ Q T 9 8 2
♥ 5 3
♦ A K J
♣ K J 2
♠ A J
♥ T 8 7 6 4
♦
♣ A Q 9 7 6 5
Dealer: North (Both Pairs bidding Simplex)
2♦ (1)
Pass (2)
2NT (3)
Dbl (4)
3♦ (5)
3♥ (6)
Pass (7)
4♥ (8)
end
Notes when South is Dealer:
  1. P2, P15: 6-card suit but 7 HCP, so not strong enough to bid at the 1-level. Note that the diamonds are bid despite the lack of honours in the suit.
  2. P8: Only 8 HCP and no 5+ card suit.
  3. P16: 3-card diamond support and 14 HCP.
  4. P17: West's 11 HCP hand could have been opened both 1♣ and 2♣. But the bids of both North and South have taken those bids away, so normally West should not double. However, West is two-suited, and had North opened 1♦ — typically a stronger bid than 2♣ because of the higher HCP range — West could also have overcalled 1♥. So double is appropriate here.
  5. North makes a minimum rebid with 3-9 HCP.
  6. East bids his cheapest 3+ card suit in response to the double. His 8 HCP is sufficient.
  7. South has bid the full extent of his hand already.
  8. With East now showing 4+ card support for hearts, West can revalue his hand to 16 points, allowing 5 shortage points for his void.
Dealer: South (1) (Both Pairs bidding Simplex)
N
E
S
W
-
-
1♠ (2)
2♣ (3)
2♦ (4)
Pass (5)
2NT (6)
3♥ (7)
Pass (8)
4♥ (9)
end
Notes when South is Dealer:
  1. P14: As a test of Simplex's dealer-independence, we examine the bidding when the dealer is South instead of North.
  2. P1: 14 HCP and a 5-card suit.
  3. P2: 6-card suit and 11 HCP.
  4. P2: 6+ card suit and 7 HCP.
  5. With only two clubs and less than 13 HCP.
  6. P16: 3-card diamond support and 14 HCP.
  7. P21: West has a hand good enough to open at the 1-level, and another 5-card suit he can bid at the 3-level, even though his partner passed.
  8. As West has overcalled, North can pass South's 2NT enquiry to show his low point-count.
  9. East has 4-card support for West's five hearts, and is worth about 9 points. East knows West has at least 8 HCP and at least 11 cards in hearts and clubs, which implies he has at least 6 shortage points. That makes a minimum total of 23 points between them. But West could have 8 more HCP — the range for a 1-level bid is 8-16 HCP — so a game bid is a good bet.
Dealer: West (1) (Both Pairs bidding Simplex)
N
E
S
W
-
-
-
1♣ (2)
2♦ (3)
Dbl (4)
2NT (5)
3♥ (6)
4♦ (7)
4♥ (8)
end
Notes when West is Dealer:
  1. P14: As a test of Simplex's dealer-independence, we examine the bidding when the dealer is South instead of North.
  2. P0, P1, P2, P3: 11 HCP and a 5+ card suit.
  3. P2: A 6+ card suit with not enough HCP to overcall at the 1-level.
  4. P2: With 8 HCP and only 2-card support for West, East could have bid 1NT, but North's bid has prevented that.
  5. P13, P16: 3-card diamond support and 14 HCP.
  6. In response to East's 'negative double', West introduces his unbid 4+ card suit.
  7. As West has overcalled, North can pass South's 2NT enquiry to show his low point-count. But he has seven cards in diamonds, and therefore bids to the Total Trump level of 4♦, given South's minimum holding of 3 cards.
  8. East takes a gamble.

Result

  • N-S can make 2♦ and, if played by South, 3NT.
  • E-W can make 5♥ and 4♣




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