2C OPENER'S REBID AFTER A 3-LEVEL POSITIVE SUIT RESPONSE

pass after doublePartial (doubleton) support for partner's suit, probably Hx.
redoubleNot even partial support for partner's suit, either a singleton or doubleton. However not a void, because partner might gamble to play in the redoubled contract. Says nothing about strength, since the partnership is known to have at least game-going values.
New suitbiddable five-card suit
Raisesuit agreement
Jump raiseshows all key cards, slam-forcing
Unnecessary jump shift up to Splinter LevelSplinter, agreeing partner's trump suit and showing a small singleton or void. Splinters are normally game-forcing, but if two of them were available then the lower is merely invitational, e.g. 1C 1S 3D/4D are both splinters, since 1C 1S 2D would have been a reverse.
3NTbalanced, probably 23-24
4NTRKC Blackwood
Jump shift to Blackwood LevelExclusion Blackwood
Jump shift to Grand-Hunting LevelComplete two-suiter. If the partnership had previously bid more than one suit and so there's ambiguity about which suits are being promised, then the other one is the first-bid suit of the player who just jumped.
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Copyright 2015 Finn Clark.