Conversation so far:
What type of exhibitions were there?
In exhibitions that year, Soviet club teams went 5-3-1 against National Hockey League (NHL) teams.
What year was that?
In 1979-80.
Where were the exhibitions held?
He believed it would be the only way for the Americans to compete with the Soviets.
Was it in the Soviet union?
CANNOTANSWER.
What else did you find interesting?
the Soviets crushed the Americans 10-3.
Soviet head coach Viktor Tikhonov later said that this victory "turned out to be a very big problem.

Question: Why was it a problem?
Self-contained rewrite: Why was the Soviets victory who crushed the Americans in the Miracle on Ice exhibitions, a problem?