Cryptic crossword clue
Arguments caused by knight sharing spoils 3-3

The most common and most likely answer to this crossword clue is the 7 letter word RUN-INS

I've seen this crossword clue in Independent
R
U
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I
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Buddy explains!

The straight part
We know that "Arguments" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case arguments = run-ins.
The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.
This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.

What does RUN-INS mean?

RUN-INS noun
  1. An encounter; a scrape or brush, especially one involving trouble or difficulty.
  2. The end-phase of a competition.

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