Hand 63 — Opener uses jump bid to show strong hand

Play this hand
Dealer
S
User Side
E/W
Contract
4S
Declarer
E
Tricks Makeable
10
Recommended Lead
9C (TOP OF NOTHING)
Vulnerability
System
SAYC

Planning

I do not like to lead away from and ac or a king, which in this case makes the opening lead the 9 of clubs. (called the top of nothing)

The Deal

North
6 3 2
Q 9 8
Q 8 7 6 4
4 2
West
A J 8
A J 5
10 5 2
A K Q 8
East
Q 9 7 5 4
7 4 2
K J
J 10 3
South
K 10
K 10 6 3
A 9 3
9 7 6 5
North: 4 HCP, 3-3-5-2 (bal)
East: 7 HCP, 5-3-2-3 (bal)
South: 10 HCP, 2-4-3-4 (bal)
West: 19 HCP, 3-3-3-4 (bal)

Bidding Sequence

S W N E
Pass1CPass1S
Pass2NTPass3S
Pass4SPassPass
Pass

Final Comments

In a suit contract we count our losers
1 spade
2 hearts
2 diamonds
0 clubs
total of 5 losers. That is 2 tricks short of game.
Aim to pull trumps. If you can get to dummy with a diamond, lead the Q of trumps and if not covered let it run.
That has a chance of eliminating the spade loser.
You can use the JC for a second entry for a second finesse.
As the cards lie, South will most likely lead a diamond, which is to your immediate advantage.
You can then discard another loser on the 4th club.