Ithought by having 25, 12 and 2512 as part of a Christmas puzzle that was giving too much away. In the event there were a smaller number of solutions than in previous years. Unusually, a few had errors; missing the introductory hint that one of 1 dn, 3ac and 5dn was a square being the most common. Congratulations to all who completed the puzzle, with the winner of the ￡35 book token being Chris Pile CMath MIMA.
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