| 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:
- 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.
- P16: 3-card diamond support and 14 HCP.
- 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.
- 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.
- South has bid the full extent of his hand already.
- 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:
- 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.
- P2: 6-card suit and 11 HCP.
- P2: 6+ card suit and 7 HCP.
- With only two clubs and less than 13 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.
- 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.
|
| 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:
- 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.
- 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.
- P13, P16: 3-card diamond support and 14 HCP.
- 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♦, given South's minimum holding of 3 cards.
- East takes a gamble.
|
