Family's anger as council orders removal of sudoku headstone of mathematician Allan Robinson Allan Robinson's family commissioned puzzle engraving for headstone The mathematician, 66, was an avid fan of the brain teaser Parish council say inscription 'contrary to guidelines' and order removal A grieving widow has been ordered to remove a Sudoku puzzle and an equation from her mathematician husband's gravestone. After the death of avid Sudoku fan Allan Robinson's death, his wife Angela asked stone masons to decorate the 66-year-old's headstone with the equation from his phd thesis and a version of the brain teaser puzzle. However, parish council chiefs have ordered 67-year-old grandmother Mrs Robinson to remove the engravings as they were "contrary to the guidelines for headstone inscriptions." Widow Angela Robinson is furious that Farndon Parish Council, Cheshire, has ordered that the Sudoku puzzle engraving on her husband Allan's headstone be removed Mrs Robinson said that Farndon Parish Council, Cheshire, had objected to the engraving in order to ensure that the standards of the burial ground at St Chad's Church were 'kept high for the benefit of all'. To add further insult, Mrs Robinson said that the letter sent to her from the council wrongly referred to her husband, who died from cancer in May 2012, as 'Mr Allen'. She is now determined to battle the council over its decision. 'It's completely unnecessary,' she told local newspaper the Chester Chronicle. We are talking about a two inch square Sudoku puzzle and a one line mathematical equation because my husband was a mathematician and did a lot of Sudoku puzzles. He was a bit of a fanatic but this is personal to him. How can they possibly say what we have put on there is lowering standards? Allan Robison's family, including son Paul and wife Angela, pictured together, have been ordered to remove Sudoku engraving commemorating the 66-year-old, pictured right, who died last year Mrs Robinson has now found that the stone mason she commissioned had not given the council a copy of the proposed design, although the engraver has offered to cover any costs of amending the headstone. The retired charity worker said she believed the council were afraid that allowing the design would lead to more inappropriate engravings, but said that her husband's gravestone was not offensive in any way. Her grown-up children, Claire and Paul, were also saddened by the council's decision, with nursery-worker Paul, from nearby Tarvin, labeling the parish bosses as 'jobsworths'. 'He was an avid Sudoku fan and the equation merely a tiny extract from his PhD thesis in mathematics,' said the younger Mr Robinson of his father. It is a very fitting tribute to a very intelligent and law-abiding person. In a letter sent to Mrs Robinson, parish clerk Suzi Pollard told the widow that the council had examined the matter and ruled that the engravings were "contrary to the guidelines for headstone inscriptions" provided to stone masons who should submit draft copies of their designs before installation. Ms Pollard said that she had spoken to the stone mason who was unable to explain why the draft design had not been submitted. 'The councillors understand that this is a sensitive and upsetting issue, however, they must ensure that the standards of the burial ground are kept high for the benefit of all,' the letter read. Ms Pollard was unavailable for comment when contacted by MailOnline today.