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Although Wynne's invention was based on earlier puzzle forms, such as the word diamond, he introduced a number of innovations (e.g. the use of horizontal and vertical lines to create boxes for solvers to enter letters). He subsequently pioneered the use of black squares in a symmetrical arrangement to separate words in rows and columns.
An American-style 15×15 crossword grid layout. A crossword (or crossword puzzle) is a word game consisting of a grid of black and white squares, into which solvers enter words or phrases ("entries") crossing each other horizontally ("across") and vertically ("down") according to a set of clues. Each white square is typically filled with one ...
Postbox of the Russian Post in Moscow. A post box (British English; also written postbox; also known as pillar box), also known as a collection box, mailbox, letter box or drop box (American English), is a physical box into which members of the public can deposit outgoing mail intended for collection by the agents of a country's postal service.
Roman numerals: for example the word "six" in the clue might be used to indicate the letters VI; The name of a chemical element may be used to signify its symbol; e.g., W for tungsten; The days of the week; e.g., TH for Thursday; Country codes; e.g., "Switzerland" can indicate the letters CH; ICAO spelling alphabet: where Mike signifies M and ...
Patented a street letter box, and operating street railway switches. Philip B. Downing (1857-1934) was an African American inventor from Providence, Rhode Island . He is known for his most significant invention, the operating street railway switch.
A letter box, letterbox, letter plate, letter hole, mail slot or mailbox is a receptacle for receiving incoming mail at a private residence or business. For outgoing mail, post boxes are often used for depositing the mail for collection, although some letter boxes are also capable of holding outgoing mail for a carrier to pick up.
Letters and parcels are deposited in post or parcel boxes, or are collected in bulk from businesses and transported to Royal Mail sorting offices. Royal Mail owns and maintains the UK's distinctive and iconic red pillar boxes , first introduced in 1852 (12 years after the first postage stamp , Penny Black ), and other post boxes , many of which ...
A 15x15 lattice-style grid is common for cryptic crosswords. A cryptic crossword is a crossword puzzle in which each clue is a word puzzle. Cryptic crosswords are particularly popular in the United Kingdom, where they originated, [1] as well as Ireland, the Netherlands, and in several Commonwealth nations, including Australia, Canada, India, Kenya, Malta, New Zealand, and South Africa.