As the game comes to the penultimate trick, South has to decide whether to finesse East for diamond J.
But I believe finessing only caters one situation where East has diamond J with other three low cards.
And playing for elimination caters the other situation where West has diamond J with diamond T and a low card.
If this stands, the Principle of Restricted Choice only applies to 50% chance of winning.
So where do I get my mathematics wrong?
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BBO Bridge Master Level 3 B-18 How does the Principle of Restricted Choice work here?
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