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Even Roman Blackwood convention has several variations, revolving around 5 ♥ and 5 ♠ responses. In all variants, they denote 2 aces. One variation is that 5 ♠ shows extra values, while 5 ♥ does not. In other variations, responses 5 ♥ - 5NT denote specific combinations of aces (same color, same rank, or "mixed").
Responses are given in the style of Roman Key Card Blackwood and may be based on a key-suit king instead of one of the aces normally shown. Key suits include: [5] the trump suit, any genuine side suit bid and supported, or; any suit bid by a player whose partner's first bid was in notrump.
"The Willows" is a novella by English author Algernon Blackwood, originally published as part of his 1907 collection The Listener and Other Stories. It is one of Blackwood's best known works and has been influential on a number of later writers. Horror author H.P. Lovecraft considered it to be the finest supernatural tale in English literature ...
Boiling water reactors generally have negative void coefficients, and in normal operation the negative void coefficient allows reactor power to be adjusted by changing the rate of water flow through the core. The negative void coefficient can cause an unplanned reactor power increase in events (such as sudden closure of a streamline valve ...
Algernon Henry Blackwood, CBE (14 March 1869 – 10 December 1951) was an English broadcasting narrator, journalist, novelist and short story writer, and among the most prolific ghost story writers in the history of the genre.
[2] [3] It is similar to Blackwood but uses 4 ♣ instead of 4NT as a relay (asking) bid to inquire about the number of aces held by partner. A further relay bid may follow to inquire about the number of kings held. Gerber is used primarily after notrump openings, responses, and rebids, making it a complement to Blackwood rather than a replacement.
The response of 2 ♥ shows a very bad hand (0-3 HCP), making the 2 ♦ relay a game-forcing bid. Positive 2 ♦ – a response of 2 ♦ shows values, and all other bids show less than 7 HCP. Positive 2 ♥ – a response of 2 ♥ show a (semi-)positive, and 2 ♦ a negative (0-4 HCP)
The Norman scale, where an ace counts as one control and a king as half a control, is the basis of the following responses to the 4NT asking bid: 5 ♣: 0 to 1 controls indicating either (a) no aces or kings, or (b) one or two [citation needed] kings or (c) one ace 5 ♦: 1½ controls indicating either (a) one ace and one king or (b) three kings