CutyDino

Oh, yes it is 5♦, I must have not changed the bid above. Clarification of the 5♦ bid: 1) You have shown no more than 4 points (ace is 5) 2) You have shown exactly 5 diamond with Q or K 3) You have shown 5 bad spades without Q or K, can have J 4) You have shown that you have either 1 or no hearts 5) With this bid you specify that you have exactly 1 heart. 6) If you had another cue bid, you would have bid that, meaning that you don't have a club cue bid (as you cannot have the spade cue bid - have shown not to have K of spades, Neither do you have a heart void - would have bid 5H 7) In any precision system, there is an agreement that the weak hand ONLY plays NT if the strong hand has made a very clear NT transfer. Because of this, 4NT is an impossible bid (usually negative cue from the weak hand)

Playing Precision or The Martens System, a very easy grand: S N 1C 1D 1H 1S 2C 3D 3H 3S 4C 4S 5C 5H 7D pass Explanations of each bid: 1C 15+Balanced OR 17+Any 1D 0-8, not 7-8 points if 4H/4S 1H Natural or any forcing 1S 0-4 2C Game forcing 3D Either 5 card diamonds with at least A/K/Q (cannot be ace if you count ace as 5 hcp) or 6+Diamonds without promissing an honour 3H Natural 5+Hearts 3S No 3 Hearts, Either exactly 4 Spades or exactly Spades without an honour 4C Cue bid, either spade fit or diamond fit 4S Specifying spade suit - exactly 5 Spades without an honour, no 2 hearts 5C Forcing a cue bid from partner 5D NO VOID HEARTS, negative cue bid, because wrong NT hand 7D With all the information, a very safe contract! See? Very easy bidding.