But then only the last two tiles 14 and 15 were scrambled which made the puzzle mathematically unsolvable and made people rack their brains in vain.

• 但是，则只有最后两个瓦片14日和15日曾试图升空，令益智数学无法解决的，并取得了人民的机架动脑筋，在徒劳的。