In this fiendish cryptic crossword, each square can contain one or two letters, which must be letters of an elemental symbol (H, He, Li etc.), or the letters D or T (for deuterium or tritium). For example, Dalton could be written D(Al)TON.
To enter an element symbol into a square, you can either double-click the square before starting to type, or just press the shift key while typing.
As this is our current prize puzzle, we’ve not included the answers this time – check back after the closing date to see if you got them right!
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