BRIDGE NOTES: Quite simple to know

One of the hall marks of a good declarer in bridge is that he never wavers in his concentration and his habit of keeping track of opponents points along with their possible distribution in touch with the bidding displayed puts him on the right rails to roll on to his coveted destination without much fuss.
More often than not the inferences present themselves in such clearly explicit terms that a sharp declarer draws an accurate picture of the key cards that he otherwise would find hard to locate. No barring of course the deception tactics that the defenders can always employ to off track the declarer, the latter invariably is in an advantageous position looking at half the deck to make sound judgements. After all there are only 52 cards with just 40 high card points to keep a count along with the 4 suits in bridge, each comprising of 13 cards.
Bridge conventions, systems and partnership agreement have their own advantages. But at the same time revealing too vivid a picture not only above to their partners but to the opponents too who can fully exploit the information and use it in their favour.
Let us analyse today's illustration in the above context and see how we can pick useful inferences from the bidding, which can help and guide us in the right direction during play to enable us to meet our final goal of fulfilling the contract bid. Those who practice with a discerning eye come out usually as winners.
Let me present you the hand with only the EW positions in view along with the bidding that went as under on the following hand:
A word about the bidding from which as declarer, east can draw some inferences, which might be useful for him in the making of his contract. As east, how would you fare in the contract and what possible inferences do you draw from the bidding?
Well, you know for sure that when north opens 1NT (weak) he can have at most 14 HCP, with no singletons. As per the defence mechanism with partnership understanding, south's redouble in this situation after east has doubled the weak NT opening is an SOS showing very few high card points but some possible escape suits. As per convention all north needs to do is to bid the mandatory lowest possible bib of 2C, which would open the true picture of south's intentions and distribution of cards. If south has 4 carder suits, he will tally in ascending order. He could bid a 5 carder suit straight away after the double, which some play as a sign off but others in partnership agreement play a one round force. But before such conclusions could be drawn, east had a clear cut bid of 4S, which he made on his massive 7 carder, which closed the auction and south led the JD as the devastation opening lead giving the opponents 2 straight diamond tricks when north took all of diamonds and shifted to a trump. Over to you now as declarer in the east seat. Of course when you count your tricks, you have 7 in spades along with 2 aces leaving you a trick short. Is the heart finesse on or not? If not what other hope lies for you?
As the table the declarer took the heart finesse and failed. Did you fare better? Lets say you reject the heart finesse and play a club to the ace with north dropping the queen. After ruffing a club, you cross to dummy with a spade to ruff another club and then play a spade to the 10S. What do you think would be the position then? The NS hands were as under:
South would be now down to K97 of hearts and JC. With dummy holding 1043 of hearts and 8C, the declarer holding Q spaded and AQ6 of hearts. Now a club to south's jack, discarding a heart, end plays him. By the way why did you reject the heart finesse? Simple-north had shown JS, AQ diamonds and KQ. Of clubs (12 points) and could not therefore hold KH - quite simple to know.