Logic puzzle might be present in lieu of a grid in a puzzle about the location of different shops. Logic puzzle A logic puzzle is a puzzle deriving from the mathematics field of deduction. The logic puzzle was first produced by Charles Lutwidge Dodgson, who is better known under his pen name Lewis Carroll, the author of "Alice's Adventures in Wonderland". In his book "The Game of Logic" he introduced a game to solve problems such as confirming the conclusion "Some greyhounds are not fat" from the statements "No fat creatures run well" and "Some greyhounds run well". Puzzles like this, where
John Charlesworth Dodgson-Charlesworth John Charlesworth Dodgson-Charlesworth John Charlesworth Dodgson-Charlesworth (1815–1880) was a British colliery owner and Member of Parliament for Wakefield between 1857 and 1859. Defeated by his Liberal opponent, William Henry Leatham at the 1859 general election both he and Leatham were subsequently found to have conducted extensive bribery during the campaign. Dodgson-Charlesworth was the son of John Dodgson Charlesworth of Chapelthorpe, Sandal, Wakefield. Baptised 20 August 1815, he was educated at Sedbergh School and St John's College, Cambridge, graduating from St John's with a BA in 1837 and an MA in 1840. In the 1841 census he is described as a