This was from the A Final of the Pairs at last weekend's EBU Seniors Congress. West is in 4♠ and South is on lead. West says "Dummy is high".
Dummy will ruff the heart return. Do we allow declarer to unblock ♦K on ♣Q next? The Strength of Field is about 60%, for those familiar with the NGS.
I thought this was close but favoured one solution over the other. Both my colleagues thought as I did, one of whom thought it also worth posting, so how think the IBLF panel?