LESSON FOUR SOLUTIONS
1)	Who has the ace?
	Declarer must have the ace since partner must play his highest
	honor when the dummy has small cards.
	Who has the ten?
	Declarer must also have the ten since the play of the jack denies
	holding the ten (if he had jack-ten he must play the lower of
	touching equals.
2)	Who has the jack?
	Declarer must since partner's play of the queen denies holding the
	jack.   If he had QJ he would have played the Jack instead of the queen.
	How many might partner have started with?
	2 or 4   (the return of the 2 has to be his lowest card which is either his
	original 4th best OR his only card left.)
3)	Account for all the missing cards…
	Hmmmm…  partner played the ten - that's his highest card.
	That means declarer has the ace.  He played the king (the sneaky so & so).
	He also has the queen.  I have the jack.  Partner played the ten - that means
	declarer has the nine as well (partner would play the 9 if he had the ten and
	nine.   Therefore:  declarer has the ace, king, queen, nine.
	How many spades did partner start with?
	Hmmm… I have 5, dummy has 3, and I know declarer has at least 4
	spades (ace, king, queen and nine).  5 + 3 + 4 = 12 cards.   That leaves
	partner with only one spade!   His ten is a singleton!
4)	Who has the jack?
	Partner's return of the ten, denies the jack because if he had 2 touching
	honors (jack and ten) he would return the higher of touching honors (remember,
	when following play the lowest of touching - when leading play the top of
	touching.
	Who has the queen?
	If partner had ace, queen, ten, small (he can't have any more because declarer
	had one spade and there are only 13 cards in the spade suit) he would return
	the 'small' (his original 4th best).  We also know he doesn't have 4 cards .
	because the jack would have been declarer's only card.  He played
	small to trick one!  Since partner can't have 4 spades, then If partner had 3, the
	ace, queen, ten, then he would have returned the queen.  When holding
	two cards in the suit, lead the higher.   Therefore -
	Declarer has the queen and the jack.
5)	Partner leads the 2, dummy plays low, you play
		K73
	WEST			EAST		answer
	♠ 2			a)	♠ AQ9	Q
				b)	♠ QT5	Q
				c)	♠ AJ9	J
				d)	♠ A64	A
				e)	♠ QJT4	T
				f)	♠ AJT9	9
				g)	♠ AT8	T
				h)	♠ J9	J