The school purchases extra-curricular activities equipment. The box of chess is 12 yuan per box, and the box of go is 16 yuan per box. The total cost is exactly 260 yuan. Question: How many ways are there to buy?
学校添购课外活动用具，象棋每盒12元，围棋每盒16元，正好共花260元，问：共有几种买法？
<result>4</result>