Assertion: chess set's piece | /r/CapableOf | attack
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Source sentences:
text: This can be easily seen by just counting the number of squares an unobstructed piece is able to attack on an orthodox and a circular board: the queen, rook, bishop, and knight can attack 27, 14, 13, and 8 squares respectively on an orthodox board, while on a circular board the counts are instead 24, 18, 6, and 6.