“In each of 12 clues an extra word must be removed; these words define the theme. A further 12 clues each have a letter missing; these letters suggest how to derive the exact wording of the theme – which must be written below the grid – from CROSS WORDS. Answers to the remaining 12 clues “clash” in 6 cells; entering the correct letter in each affected cell will display a symmetrical representation of the theme (24 cells in total), which must be highlighted. Chambers Dictionary (2016) is recommended.”