Find the Best Clue, I

Question

• Bob has an unknown blue card in his hand.
• Cathy has an unknown 2 in her hand.
• What is the best clue that Alice can give?

Solution

• Alice only has one valid clue: number 2 to Cathy.
• Alice cannot clue the red 3 (with either color or rank) to initiate a Reverse Finesse, because Cathy would proceed to play the unknown 2 as a red 2 (assuming a Prompt over a Finesse).
• Alice should avoid cluing red to Cathy, as it would violate Good Touch Principle and touch the trash red 1.