Brainteaser 1610: Word game

From The Sunday Times, 18th July 1993 [link]

An unusual card game consisted of 12 cards each with a different well-known word of four letters on it. No letter appeared on more than three cards and no two cards had more than one letter in common. The winner was the first person to collect among his or her cards a set of three cards with the same letter on each.

In one game against George I started and after two goes I had chosen:

ZEST
CHEW

while George had picked up:

DAWN
RILE

(the second to stop me getting a set of three with a common “E”).

For my third I chose:

QUAY

and after George had selected his third card he told me that whatever card I now chose he would certainly win on this next turn.

I picked up:

SHIN

for my fourth card and, as predicted, George chose:

FLOW

giving him a winning set.

The unused cards were:

CURT
JUGS
MOTH
PARK

what was George’s third card?

This puzzle was selected for the book Brainteasers (2002, edited by Victor Bryant). The wording above is taken from the book. It is slightly changed from the original puzzle.

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