Setting Up a Marked Finesse

Setting Up a Marked Finesse

K 10 3
W   E
A 4 2

Sometimes we can set up a marked finesse position.

Here, in 3NT, West opening lead was Q. We could have won the trick in either hand, but West surely has J. (He probably started with QJ9x.) So we took the first trick with our ace, and now we have a marked finesse against the jack.

Our threat card is 10.

We should lead 2 and play 10 when West plays low.

If we had won the first trick with K, then there would be no finesse position.