By Collins Dictionaries, Deej Johnson
By National Geographic Kids
By Igloo Books
By Collins Dictionaries
By Dr. Gareth Moore, Mensa Ltd
By Telegraph Group Limited
By Erwin Brecher
By Nick Fawcett
By Kia Marie Hunt, Collins Kids
By Collins Dictionaries, Collins Puzzles
By Publications International ltd, Brain Games
By The Puzzle Society
By Robert Allen
By Parragon Books Ltd
By Compiled By Barbour Staff
By Gareth Moore
By The Times Mind Games, .
By Fox, Hayden
By Publications International Ltd.
By Kaye, Harry
By Moore, Gareth
By Fatsis, Stefan