The puzzles are the brainchild of registered blind setter Eric Westbrook, who writes,

“The 3D BBC CiNA Puzzle Calendar is back in print this year after an internet 12 months following looking after my mother. As usual, every single penny received will be split evenly between BBC CiNA and RNIB Pears Centre for Specialist Learning.

http://www.calendarpuzzles.co.uk/calendar-puzzle/

'12 superb puzzles' - Puck

'....very fine 2017 calendar.... extraordinary 3D crosswords ..' - Hugh Stepenson

'What a beauty!' - Curmudgeon

'I told you I was ill' - S.Milligan