Double Finesse


A double finesse is a finesse that's taken against two opposing honor cards:

Dummy
AQT
WestEast
K98 J765
South
S432

South is on lead and needs two spade tricks. A double finesse can be taken by leading a low spade to dummy's ST. If East shows up with either the SJ or SK, South can take a second spade finesse upon regaining the lead.

This is superior to finessing the SQ whenever West has both the king and jack.

However, when faced with a 9-card holding, it may slightly better mathematically to finesse the queen:

Dummy
AQT83
WestEast
??? ???
South
H6542

In this layout, South is in hand and needs all 5 heart tricks. It's best to finesse the HQ and then play the HA. (Note that if South only needs 4 heart tricks, the correct line is to lead to the HA first.)