Bertrand RUSSELL, whose surname is hidden in the final column, said, ‘There’s a BIBLE on that shelf there. But I keep it next to VOLTAIRE – POISON and ANTIDOTE.’ The other four unclued lights are two synonyms each of ‘poison’ (VENOM, TOXIN) and ‘antidote’ (MITHRIDATE, SERUM).

First prize  Rhiannon Hales, Ilfracombe, Devon

Runners-up  Paul Harrison, Wilpshire, Blackburn, Lancs; Matthew Wright, Topsham, Devon