# 查看完整版本 : Black Wood Convention

alexskt 2007-11-3 04:17 PM

## Black Wood Convention

[font=Arial][size=3][size=4][color=navy][b]4NT Regular Blackwood ask partner to bid up-the-line :[/b][/color][/size] [/size][/font]
[font=Arial][size=3][/size][/font]
[font=Arial][size=3][color=blue]5C[/color] is no aces[/size][/font]
[font=Arial][size=3][color=darkorange]5D[/color] is one ace[/size][/font]
[font=Arial][size=3][color=red]5H[/color] is two aces[/size][/font]
[font=Arial][size=3]5S is three aces and 5NT is all four aces[/size][/font]
[font=Arial][size=3][/size][/font]
[font=Arial][size=3][/size][/font]
[font=Arial][size=3]If the 4NT bidder continues to 5NT he is asking for kings[/size][/font]
[font=Arial][size=3][/size][/font]
[font=Arial][size=3]It is used to ask for aces in the following situations:[/size][/font]
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[font=Arial][size=3]1. [color=black][font=Arial]A trump suit has been established[/font][/color][/size][/font]
[font=Arial][color=black][font=Arial][size=3]2. [color=black][font=Arial]A trump suit is implied[/font][/color][/size][/font][/color][/font]
[font=Arial][color=black][font=Arial][color=black][font=Arial][size=4]3. [font=Arial][size=12pt]An immediate [/size][/font][b][font=Arial][size=12pt]4NT[/size][/font][/b][font=Arial][size=12pt] response over opener's bid of [b]1C[/b], [b]1D[/b], [b]1H[/b] or [b]1S[/b][/size][/font][/size][/font][/color][/font][/color][/font]
[font=Arial][color=black][font=Arial][color=black][font=Arial][size=4][/size][/font][/color][/font][/color][/font]
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[font=Arial][color=black][font=Arial][size=3]If notrump is bid instead of suits, 4NT is acted as "quatitative" and is asking partner to bid 6NT or pass[/size]
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alexskt 2007-11-3 04:20 PM

[size=4][color=navy][b]Roman Keycard Blackwood (4 Clubs):[/b][/color][/size]
[b][size=4][color=#000080][/color][/size][/b]
[size=3][color=darkgreen]-required situations:[/color][/size]
[size=3][color=#006400]  openers bid[/color][/size]
[size=3][color=#006400][color=#000000]   1. [u]weak two-bid[/u][/color][/color][/size]
[size=3]   2. [u]preemptive 3-bid[/u][/size]
[u][size=3][/size][/u]

[size=4]Responder's 4C(4D [font=Arial]if partner’s suit is clubs)[/font] is to inquire about opener’s [color=red]key cards[/color] [color=sienna][b][u]without the risk of passing the five-level with only 11 tricks[/u][/b][/color][/size]
[font=Arial][size=12pt][size=4][color=black][font=新細明體][/font][/color][/size]
[size=4][color=black][font=新細明體][/font][/color][/size]
[size=4][color=black][font=新細明體]1.  [size=3]   [/size][/font][/color][/size][size=3][color=black][font=Arial]If partner opens with a weak-two bid, you must first bid 2NT. After partner’s rebid, you make a rebid of 4C[/font][/color][color=red][font=Arial].[/font][/color][color=black][font=新細明體][/font][/color]
[color=black][font=新細明體]2.     [/font][/color][color=black][font=Arial]If partner opens with a three-bid, you respond with 4C (if partner’s suit is clubs then you bid 4D). [/font][/color][color=black][font=新細明體][/font][/color]
[/size][/size][/font]
[font=Arial][size=12pt][size=3][/size][/size][/font]
[font=Arial][size=12pt][size=3][font=Arial][size=12pt][b][size=4][color=navy]Responses:[/color][/size][/b][/size][/font][/size][/size][/font]
[font=Arial][size=12pt][size=3][font=Arial][size=12pt][/size][/font][/size][/size][/font]
[font=Arial][size=12pt][size=3][font=Arial][size=12pt][font=Arial][size=12pt]4D   = 0 keycards[/size][/font][/size][/font][/size][/size][/font]
[font=Arial][size=12pt][size=3][font=Arial][size=12pt][font=Arial][size=12pt][font=Arial][size=12pt]4H   = 1 keycard, no trump queen[/size][/font][/size][/font][/size][/font][/size][/size][/font]
[font=Arial][size=12pt][size=3][font=Arial][size=12pt][font=Arial][size=12pt][font=Arial][size=12pt][font=Arial][size=12pt]4S   = 1 keycard with trump queen[/size][/font][/size][/font][/size][/font][/size][/font][/size][/size][/font]
[font=Arial][size=12pt][size=3][font=Arial][size=12pt][font=Arial][size=12pt][font=Arial][size=12pt][font=Arial][size=12pt][font=Arial][size=12pt]4NT = 2 keycards, no trump queen[/size][/font][/size][/font][/size][/font][/size][/font][/size][/font][/size][/size][/font]
[font=Arial][size=12pt][size=3][font=Arial][size=12pt][font=Arial][size=12pt][font=Arial][size=12pt][font=Arial][size=12pt][font=Arial][size=12pt][font=Arial][size=12pt]5C   = 2 keycards with trump queen[/size][/font][/size][/font][/size][/font][/size][/font][/size][/font][/size][/font]
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[[i] 本帖最後由 alexskt 於 2007-11-3 04:23 PM 編輯 [/i]]

alexskt 2007-11-3 04:28 PM

[size=4][color=navy][b]Roman Keycard Blackwood (RKC):[/b][/color][/size]

[font=Arial][b][size=3]1. Slam bidding[/size][/b][/font]
[font=Arial][b][size=3][/size][/b][/font]
[font=Arial][b][size=3]2. 4 NT is the asking bid for keycards in the last bid suit or the agreed upon trump suit[/size][/b][/font]
[font=Arial][b][size=3][/size][/b][/font]
[font=Arial][b][size=3]3. there are 5 keycards: All four aces and the king of trumps[/size][/b][/font]

[font=Arial][b][size=4][color=indigo][b]Responses to 4NT:[/b][/color][/size][/b][/font]

[font=Arial][size=12pt][b]5C   = 0 or 3 keycards[/b][/size][/font]
[font=Arial][size=12pt][b][font=Arial][size=12pt][b]5D   = 1 or 4 keycards [/b][/size][/font][/b][/size][/font]
[font=Arial][size=12pt][b][font=Arial][size=12pt][b][font=Arial][size=12pt][b]5H   = 2 or 5 keycards without the queen of trumps  [/b][/size][/font][/b][/size][/font][/b][/size][/font]
[font=Arial][size=12pt][b][font=Arial][size=12pt][b][font=Arial][size=12pt][b]5S   = 2 or 5 keycards with the queen of trumps.  [/b][/size][/font][/b][/size][/font][/b][/size][/font]
[font=Arial][size=12pt][b][font=Arial][size=12pt][b][font=Arial][size=12pt][b][i][font=Arial][size=12pt][b]5NT[/b][/size][/font][font=Arial][size=12pt][b]= 5 keycards without the queen of trumps ([b]alternate)[/b][/b][/size][/font][/i][/b][/size][/font][/b][/size][/font][/b][/size][/font]
[font=Arial][size=12pt][b][font=Arial][size=12pt][b][font=Arial][size=12pt][b][i][font=Arial][size=12pt][b][font=Arial][size=12pt][b][i]6C   = 5 keycards with the queen of trumps ([b]alternate[/b])[/i][/b][/size][/font][/b][/size][/font][/i][/b][/size][/font][/b][/size][/font][/b][/size][/font]
[font=Arial][size=12pt][b][font=Arial][size=12pt][b][font=Arial][size=12pt][b][font=Arial][size=12pt][b][/b][/size][/font][/b][/size][/font][/b][/size][/font][/b][/size][/font]
[font=Arial][size=12pt][b][font=Arial][size=12pt][b][font=Arial][size=12pt][b][font=Arial][size=12pt][b][font=Arial][size=12pt][b][size=4][b][i][color=darkgreen]Responses to 5NT (After Bidding and Responding to 4NT):[/color][/i][/b][/size][/b][/size][/font][/b][/size][/font][/b][/size][/font][/b][/size][/font][/b][/size][/font]
[font=Arial][size=12pt][b][font=Arial][size=12pt][b][font=Arial][size=12pt][b][font=Arial][size=12pt][b][font=Arial][size=12pt][b][size=4][b][i][color=darkgreen][/color][/i][/b][/size][/b][/size][/font][/b][/size][/font][/b][/size][/font][/b][/size][/font][/b][/size][/font]
[font=Arial][size=12pt][b][font=Arial][size=12pt][b][font=Arial][size=12pt][b][font=Arial][size=12pt][b][font=Arial][size=12pt][b][size=4][font=Arial][size=12pt][b]6C    = 0  kings[/b][/size][/font][/size][/b][/size][/font][/b][/size][/font][/b][/size][/font][/b][/size][/font][/b][/size][/font]
[font=Arial][size=12pt][b][font=Arial][size=12pt][b][font=Arial][size=12pt][b][font=Arial][size=12pt][b][font=Arial][size=12pt][b][size=4][font=Arial][size=12pt][b][font=Arial][size=12pt][b]6D    = 1 king[/b][/size][/font][/b][/size][/font][/size][/b][/size][/font][/b][/size][/font][/b][/size][/font][/b][/size][/font][/b][/size][/font]
[font=Arial][size=12pt][b][font=Arial][size=12pt][b][font=Arial][size=12pt][b][font=Arial][size=12pt][b][font=Arial][size=12pt][b][size=4][font=Arial][size=12pt][b][font=Arial][size=12pt][b][font=Arial][size=12pt][b]6H    = 2 kings[/b][/size][/font][/b][/size][/font][/b][/size][/font][/size][/b][/size][/font][/b][/size][/font][/b][/size][/font][/b][/size][/font][/b][/size][/font]
[font=Arial][size=12pt][b][font=Arial][size=12pt][b][font=Arial][size=12pt][b][font=Arial][size=12pt][b][font=Arial][size=12pt][b][size=4][font=Arial][size=12pt][b][font=Arial][size=12pt][b][font=Arial][size=12pt][b][font=Arial][size=12pt][b]Grand Slam = previously undisclosed source of tricks[/b][/size][/font][/b][/size][/font][/b][/size][/font][/b][/size][/font][/size][/b][/size][/font][/b][/size][/font][/b][/size][/font][/b][/size][/font][/b][/size][/font]

river_child 2007-11-5 10:26 AM