Lesson 18
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18.1 This is of course only possible if West has not led the Ace of Diamonds… Take the opportunity to remind them that, in general, it is good to lead in the suit of ones side, and that on does not lead under the Aces in suit contracts. In other words, this Ace of Diamonds lead is imperative!!
18.2 Don't insist too much on this "hand count" by the declarer, since most of your pupils will have laid the Ace of Diamonds .. simply because they will have seen the King in dummy.
18.3 Explain that the leading of a head of sequence is in general better than the Ace of your side's strong suit.. and use the Diamonds as an illustration of that, by showing them that playing the Ace of Diamonds establishes the King, which will often allow a useful discard by the declarer.
18.4 You can note in passing for your pupils that deals in which one can make a contract in both camps are those where both sides possess a lot of Trumps. That will be useful later…
18.5 Insist heavily on the necessity of not stepping outside the limits - small/medium risk - on the pretext of wanting to play the contract, for example. Show that bidding 4 is a bad move and 3 would fail as well: you have exchanged an opponent's failure for your own!